CN117561234A - Compounds and organic light-emitting devices containing the same - Google Patents

Abstract

This specification provides a compound represented by Chemical Formula 1 and an organic light-emitting device including the same.

Description

Compound and organic light-emitting device containing the same

Technical Field

This application claims the priority of Korean Patent Application No. 10-2022-0045344 filed with the Korean Intellectual Property Office on April 12, 2022, and all contents disclosed in the document of the Korean patent application are incorporated into this specification.

The present invention relates to a compound and an organic light-emitting device including the same.

Background Art

Generally speaking, the phenomenon of organic light emitting refers to the phenomenon of converting electrical energy into light energy using organic substances. An organic light emitting device using the phenomenon of organic light emitting generally has a structure including an anode and a cathode and an organic layer located between them. Here, in order to improve the efficiency and stability of the organic light emitting device, the organic layer is mostly formed by a multilayer structure composed of different substances, for example, it can be formed by a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, etc. For the structure of such an organic light emitting device, if a voltage is applied between the two electrodes, holes are injected from the anode into the organic layer, and electrons are injected from the cathode into the organic layer. When the injected holes and electrons meet, excitons are formed, and when the excitons re-transition to the ground state, light is emitted.

There is a continuous demand for the development of new materials for organic light-emitting devices as described above.

Prior art literature

Patent Literature

(Patent Document 1) KR 10-2014-0076888

Summary of the invention

Technical issues

The present specification provides a compound and an organic light-emitting device including the same.

Solution to the problem

One embodiment of the present specification provides a compound represented by the following Chemical Formula 1.

[Chemical formula 1]

In the above chemical formula 1,

R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl,

At least one of R1 and R2 is an alkyl group having 1 to 3 carbon atoms,

At least one of R2 is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group,

R3 and R4 are the same or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group,

R5 is hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl,

When R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group,

Ar1 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group,

L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted divalent heterocyclic group,

a is an integer from 1 to 8, and when a is 2 or more, R1 are the same or different from each other,

b is an integer from 1 to 3, and when b is 2 or more, R2 are the same or different from each other,

c is an integer of 1 to 7, and when c is 2 or more, R5 are the same as or different from each other.

In addition, one embodiment of the present specification provides an organic light-emitting device, which includes: an anode, a cathode, and one or more organic layers arranged between the anode and the cathode, and one or more of the organic layers contain the compound represented by the above Chemical Formula 1.

Effects of the Invention

The compounds described in this specification can be used as materials for the organic layer of an organic light-emitting device. The compounds according to at least one embodiment of this specification can achieve improved efficiency, lower driving voltage and/or improved life characteristics in an organic light-emitting device. In particular, the compounds described in this specification can be used as materials for hole injection, hole transport, hole injection and hole transport, electron blocking, luminescence, hole blocking, electron transport, or electron injection. In addition, compared with existing organic light-emitting devices, it has the effects of low driving voltage, high efficiency and/or long life.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of an organic light-emitting device in which a substrate 1 , an anode 2 , an organic layer 10 , and a cathode 9 are sequentially stacked.

2 illustrates an example of an organic light-emitting device having a substrate 1, an anode 2, a hole injection layer 3, a hole transport layer 4, an electron blocking layer 5, a light-emitting layer 6, a hole blocking layer 7, an electron injection and transport layer 8, and a cathode 9 stacked in sequence.

[Explanation of symbols]

1: Substrate

2: Anode

3: Hole injection layer

4: Hole transport layer

5: Electron blocking layer

6: Luminous layer

7: Hole blocking layer

8: Electron injection and transport layer

9: Cathode

10: Organic layer

DETAILED DESCRIPTION

Next, this specification is described in more detail.

In the present specification, when it is indicated that a certain part “includes/comprises” a certain constituent element, unless there is a particular description to the contrary, it means that other constituent elements may be further included, rather than excluding other constituent elements.

In the present specification, when it is mentioned that a certain component is located “on” another component, it not only includes the case where the certain component is in contact with the other component, but also includes the case where other components exist between the two components.

In the present specification, examples of substituents are described below, but are not limited thereto.

The term "substituted" mentioned above means that a hydrogen atom bonded to a carbon atom of a compound is replaced by another substituent. The substituted position is not limited as long as it is a position where a hydrogen atom can be substituted, that is, a position where a substituent can be substituted. When there are more than two substitutions, the two or more substituents may be the same or different from each other.

In the present specification, the term "substituted or unsubstituted" refers to a group selected from deuterium, a halogen group, a nitrile group (-CN), a nitro group, a hydroxyl group, an alkyl group, a cycloalkyl group, an alkoxy group, a phosphine oxide group, an aryloxy group, an alkylthio group, Arylthio Alkylsulfonyl Arylsulfonyl The alkylene group may be substituted with one or more substituents selected from the group consisting of alkenyl, silyl, boronyl, amine, aryl or heterocyclic groups, or may be substituted with a substituent formed by connecting two or more substituents selected from the group consisting of the above-mentioned substituents, or may not have any substituent. For example, the "substituent formed by connecting two or more substituents" may be a biphenyl group. That is, the biphenyl group may be an aryl group, or may be interpreted as a substituent formed by connecting two phenyl groups.

In the present specification, the term "substituted or unsubstituted" means substituted with one or more substituents selected from deuterium, a halogen group, a nitrile group, a nitro group, a hydroxyl group, an amino group, a silyl group, a boron group, an alkoxy group, an aryloxy group, an alkyl group, a cycloalkyl group, an aryl group, and a heterocyclic group, or substituted with a substituent formed by connecting two or more substituents among the substituents exemplified above, or having no substituent.

In this specification, the term "substituted or unsubstituted" means substituted with one or more substituents selected from deuterium, a halogen group, a nitrile group, an alkyl group, an aryl group, and a heterocyclic group, or substituted with a substituent formed by connecting two or more substituents among the substituents exemplified above, or having no substituent.

Examples of the above substituents are described below, but are not limited thereto.

In the present specification, as examples of the halogen group, there are fluorine (—F), chlorine (—Cl), bromine (—Br) or iodine (—I).

In the present specification, the _silyl group can be represented by the chemical _{formula -SiYaYbYc} , wherein each of _Ya , _Yb and _Yc can be hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. The silyl group specifically includes trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, vinyldimethylsilyl, propyldimethylsilyl, triphenylsilyl, diphenylsilyl, phenylsilyl and the like, but is not limited thereto.

In the present specification, the boryl group can be represented by the chemical _{formula -BYdYe} , wherein _Yd and _Ye can each be hydrogen, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. The boryl group specifically includes trimethylboryl, triethylboryl, tert-butyldimethylboryl, triphenylboryl, phenylboryl, etc., but is not limited thereto.

In the present specification, the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 60. According to one embodiment, the number of carbon atoms of the alkyl group is 1 to 30. According to another embodiment, the number of carbon atoms of the alkyl group is 1 to 20. According to another embodiment, the number of carbon atoms of the alkyl group is 1 to 10. Specific examples of the alkyl group include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, pentyl, n-pentyl, hexyl, n-hexyl, heptyl, n-heptyl, octyl, n-octyl, etc., but are not limited thereto.

In the present specification, the above description about the alkyl group is applicable to the arylalkyl group except that the arylalkyl group is substituted with an aryl group.

In this specification, the alkoxy group may be straight chain, branched chain or cyclic. The number of carbon atoms of the alkoxy group is not particularly limited, but preferably the number of carbon atoms is 1 to 20. Specifically, it may be a methoxy group, an ethoxy group, a n-propoxy group, an isopropoxy group, a n-butoxy group, an isobutoxy group, a tert-butoxy group, a sec-butoxy group, a n-pentoxy group, a neopentoxy group, an isopentyl group, a n-hexyl group, a 3,3-dimethylbutoxy group, a 2-ethylbutoxy group, a n-octyloxy group, a n-nonyloxy group, a n-decyloxy group, etc., but is not limited thereto.

The alkyl group, alkoxy group, and other substituents containing an alkyl portion described in the present specification include all of linear and branched forms.

In the present specification, the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to one embodiment, the number of carbon atoms of the alkenyl group is 2 to 20. According to another embodiment, the number of carbon atoms of the alkenyl group is 2 to 10. According to another embodiment, the number of carbon atoms of the alkenyl group is 2 to 6. As specific examples, there are vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1-butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-(naphthalene-1-yl)vinyl-1-yl, 2,2-bis(diphenyl-1-yl)vinyl-1-yl, stilbene, styryl, etc., but are not limited thereto.

In the present specification, the alkynyl group is a substituent containing a triple bond between carbon atoms, and may be a linear or branched chain. The number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to one embodiment, the number of carbon atoms in the alkynyl group is 2 to 20. According to another embodiment, the number of carbon atoms in the alkynyl group is 2 to 10.

In the present specification, the cycloalkyl group is not particularly limited, but is preferably a cycloalkyl group having 3 to 60 carbon atoms. According to one embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another embodiment, the cycloalkyl group has 3 to 6 carbon atoms. Specifically, there are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, etc., but are not limited thereto.

In the present specification, the amino group is -NH ₂ , and the above-mentioned amino group may be substituted with the above-mentioned alkyl group, aryl group, heterocyclic group, alkenyl group, cycloalkyl group, and combinations thereof. The number of carbon atoms of the above-mentioned substituted amino group is not particularly limited, but is preferably 1 to 30. According to one embodiment, the number of carbon atoms of the above-mentioned amino group is 1 to 20. According to one embodiment, the number of carbon atoms of the above-mentioned amino group is 1 to 10. Specific examples of the substituted amino group include methylamino, dimethylamino, ethylamino, diethylamino, phenylamino, 9,9-dimethylfluorenylphenylamino, pyridylphenylamino, diphenylamino, phenylpyridylamino, naphthylamino, biphenylamino, anthracenylamino, dibenzofuranylphenylamino, 9-methylanthrylamino, diphenylamino, phenylnaphthylamino, ditolylamino, phenyltolylamino, diphenylamino, etc., but are not limited thereto.

In the present specification, the aryl group is not particularly limited, but is preferably an aryl group having 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the carbon number of the aryl group is 6 to 30. According to one embodiment, the carbon number of the aryl group is 6 to 20. Regarding the aryl group, as a monocyclic aryl group, it may be phenyl, biphenyl, terphenyl, quaterphenyl, etc., but it is not limited thereto. As the polycyclic aryl group, it may be naphthyl, anthracenyl, phenanthrenyl, pyrenyl, perylenyl, triphenyl, phenylene, fluorenyl, triphenylene, etc., but are not limited to these.

In the present specification, the fluorenyl group may be substituted, and two substituents may be combined with each other to form a spiro structure. In this case, the spiro structure may be an aromatic hydrocarbon ring or an aliphatic hydrocarbon ring.

When the above fluorenyl group is substituted, it may be Isospirofluorenyl; (9,9-dimethylfluorenyl) and (9,9-diphenylfluorenyl) and the like substituted fluorenyl, but the present invention is not limited thereto.

In this specification, substituted aryl can also include a form in which an aliphatic ring is fused to the aryl. For example, the tetrahydronaphthyl of the following structure is included in the substituted aryl. In the following structure, one of the carbon atoms of the benzene ring can be connected to other positions.

In the present specification, the above description on the aryl group can be applied to the aryl group in the aryloxy group.

In the present specification, the above description about the alkyl group can be applied to the alkyl group in the above alkylthio group and alkylsulfonyl group.

In the present specification, the above description about the aryl group can be applied to the aryl group in the arylthio group and the arylsulfonyl group.

In the present specification, the heterocyclic group is a ring group containing one or more of N, O, P, S, Si and Se as heteroatoms, and the number of carbon atoms is not particularly limited, but preferably the number of carbon atoms is 2 to 60. According to one embodiment, the number of carbon atoms of the heterocyclic group is 2 to 30. According to one embodiment, the number of carbon atoms of the heterocyclic group is 2 to 20. Examples of the heterocyclic group include pyridyl, pyrrolyl, pyrimidinyl, quinolyl, pyridazinyl, furyl, thienyl, imidazolyl, pyrazolyl, dibenzofuranyl, dibenzothienyl, carbazolyl, benzocarbazolyl, naphthobenzofuranyl, benzonaphthothienyl, indenocarbazolyl, triazinyl and the like, but are not limited thereto.

In the present specification, a heteroaryl group is aromatic, and other than this, the above description about the heterocyclic group is applicable.

In the present specification, the description of the above-mentioned aryl group is applicable to the above-mentioned arylene group except that the above-mentioned arylene group is divalent.

In the present specification, the same explanation as for the above-mentioned heterocyclic group can be applied to the divalent heterocyclic ring except that the divalent heterocyclic ring is divalent.

In the present specification, in a substituted or unsubstituted ring formed by bonding with adjacent groups, "ring" means a hydrocarbon ring or a heterocyclic ring.

The hydrocarbon ring may be aromatic, aliphatic, or a condensed ring of aromatic and aliphatic groups, and may be selected from the examples of the cycloalkyl group or aryl group described above.

In this specification, the meaning of forming a ring by combining with adjacent groups means combining with adjacent groups to form a substituted or unsubstituted aliphatic hydrocarbon ring, a substituted or unsubstituted aromatic hydrocarbon ring, a substituted or unsubstituted aliphatic heterocycle, a substituted or unsubstituted aromatic heterocycle, or a condensed ring thereof. The above hydrocarbon ring refers to a ring consisting only of carbon and hydrogen atoms. The above heterocycle refers to a ring containing one or more elements selected from N, O, P, S, Si and Se. In this specification, the above aliphatic hydrocarbon ring, aromatic hydrocarbon ring, aliphatic heterocycle and aromatic heterocycle can be monocyclic or polycyclic.

In this specification, an aliphatic hydrocarbon ring refers to a ring that is not an aromatic ring and is composed only of carbon and hydrogen atoms. Examples of aliphatic hydrocarbon rings include, but are not limited to, cyclopropane, cyclobutane, cyclobutene, cyclopentane, cyclopentene, cyclohexane, cyclohexene, 1,4-cyclohexadiene, cycloheptane, cycloheptene, cyclooctane, and cyclooctene.

In this specification, an aromatic hydrocarbon ring refers to an aromatic ring composed only of carbon and hydrogen atoms. Examples of aromatic hydrocarbon rings include benzene, naphthalene, anthracene, phenanthrene, perylene, fluoranthene, triphenylene, phenanthene, pyrene, tetracene, In the present specification, the aromatic hydrocarbon ring can be interpreted as having the same meaning as the aryl group.

In this specification, an aliphatic heterocycle refers to an aliphatic ring containing one or more heteroatoms. Examples of aliphatic heterocycles include oxirane, tetrahydrofuran, 1,4-dihydrofuran, 1,4-dioxane, pyrrolidine, piperidine, morpholine, oxepane Azoctane Thioctane etc., but not limited thereto.

In the present specification, an aromatic heterocycle refers to an aromatic ring containing one or more heteroatoms. Examples of aromatic heterocycles include pyridine, pyrrole, pyrimidine, pyridazine, furan, thiophene, imidazole, pyrazole, Azoles, Isopropylamine Azoles, thiazoles, isothiazoles, triazoles, diazole, thiadiazole, dithiazole, tetrazole, pyran, thiopyran, pyridazine, Azine, thiazine, di Olefins, triazines, tetrazines, isoquinolines, quinolines, benzoquinones, quinazolines, quinoxalines, naphthyridines, acridines, phenanthridines, naphthyridines, triazaindene, indoles, indolizines, benzothiazoles, benzo azole, benzimidazole, benzothiophene, benzofuran, dibenzothiophene, dibenzofuran, carbazole, benzocarbazole, dibenzocarbazole, phenazine, imidazopyridine, phen Oxazine, indolecarbazole, indenocarbazole, etc., but are not limited to these.

Hereinafter, preferred embodiments of the present invention will be described in detail. However, the embodiments of the present invention can be modified in various forms, and the scope of the present invention is not limited to the embodiments described below.

The compound represented by Chemical Formula 1 according to the present invention can adjust the HOMO and LUMO energy levels of the compound by connecting an amine group to tetralin, thereby adjusting the energy barrier between the compound and the organic layer.

In particular, the compound represented by Chemical Formula 1 according to the present invention has an alkyl substituent having 1 to 3 carbon atoms on tetralin, or an alkyl or aryl substituent on the benzene ring portion of tetralin, thereby adjusting the hole migration characteristics of the compound and adjusting the balance of holes and electrons in the device.

In addition, the compound represented by Chemical Formula 1 according to the present invention improves hole transport characteristics by connecting an amine group to the substituted fluorene group, thereby improving the driving voltage, efficiency and lifespan of the device.

Therefore, when the compound represented by the above Chemical Formula 1 is applied to an organic light emitting device, an organic light emitting device having high efficiency, low voltage and/or long life characteristics may be obtained.

Next, Chemical Formula 1 will be described in detail.

[Chemical formula 1]

In the above chemical formula 1,

R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl,

At least one of R1 and R2 is an alkyl group having 1 to 3 carbon atoms,

At least one of R2 is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group,

R3 and R4 are the same or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group,

R5 is hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl,

When R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group,

Ar1 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group,

L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted divalent heterocyclic group,

a is an integer from 1 to 8, and when a is 2 or more, R1 are the same or different from each other,

b is an integer from 1 to 3, and when b is 2 or more, R2 are the same or different from each other,

c is an integer of 1 to 7, and when c is 2 or more, R5 are the same as or different from each other.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, an alkyl group having 1 to 60 carbon atoms which may be substituted or unsubstituted by deuterium, or an aryl group having 6 to 60 carbon atoms which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other and are independently hydrogen, deuterium, an alkyl group having 1 to 30 carbon atoms which may be substituted or unsubstituted by deuterium, or an aryl group having 6 to 30 carbon atoms which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, an alkyl group having 1 to 20 carbon atoms which may be substituted or unsubstituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms which may be substituted or unsubstituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other and are independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted or unsubstituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted or unsubstituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted or unsubstituted by deuterium, or a phenyl group which may be substituted or unsubstituted by deuterium.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms, or a phenyl group.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, methyl, ethyl, propyl, isopropyl or phenyl.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and are each independently hydrogen, deuterium, methyl, isopropyl or phenyl.

In one embodiment of the present specification, at least one of R1 and R2 is an alkyl group having 1 to 3 carbon atoms.

In one embodiment of the present specification, at least one of R1 and R2 is a methyl group, an ethyl group or an isopropyl group.

In one embodiment of the present specification, at least one of R1 and R2 is a methyl group or an isopropyl group.

In one embodiment of the present specification, at least one of R1 and R2 is a methyl group.

In one embodiment of the present specification, at least one of R2 is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

In one embodiment of the present specification, at least one of R2 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, at least one of R2 is a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms.

In one embodiment of the present specification, at least one of R2 is a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted phenyl group.

In one embodiment of the present specification, at least one of R2 is an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium or an alkyl group which may be substituted by deuterium or an phenyl group which may be substituted by deuterium.

In one embodiment of the present specification, at least one of R2 is an alkyl group having 1 to 3 carbon atoms or a phenyl group.

In one embodiment of the present specification, at least one of R2 is a methyl group, an ethyl group, a propyl group, an isopropyl group or a phenyl group.

In one embodiment of the present specification, at least one of R2 is a methyl group, an isopropyl group or a phenyl group.

In one embodiment of the present specification, R1 is hydrogen, deuterium or methyl, and R2 is hydrogen, deuterium, methyl, isopropyl or phenyl.

In one embodiment of the present specification, R1 is hydrogen or deuterium, and R2 is hydrogen, deuterium, methyl or isopropyl.

In one embodiment of the present specification, R1 is hydrogen, and R2 is hydrogen, methyl or isopropyl.

In one embodiment of the present specification, R1 is hydrogen, and R2 is hydrogen or methyl.

In one embodiment of the present specification, R1 is hydrogen, and R2 is hydrogen or isopropyl.

In one embodiment of the present specification, R1 is hydrogen, and R2 is methyl or isopropyl.

In one embodiment of the present specification, R1 is hydrogen and R2 is methyl.

In one embodiment of the present specification, R1 is hydrogen, and R2 is isopropyl.

In one embodiment of the present specification, R1 is a methyl group, and R2 is hydrogen, deuterium, methyl, isopropyl or phenyl.

In one embodiment of the present specification, R1 is a methyl group, and R2 is a methyl group or an isopropyl group.

In one embodiment of the present specification, R1 is a methyl group, and R2 is a phenyl group.

In one embodiment of the present specification, R3 and R4 are the same or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group having 6 to 60 carbon atoms.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group having 6 to 30 carbon atoms.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group having 6 to 20 carbon atoms.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 60 carbon atoms which is substituted or not substituted by deuterium, or an aryl group having 6 to 60 carbon atoms which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a hydrocarbon ring group having 6 to 60 carbon atoms which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 30 carbon atoms which is substituted or not substituted by deuterium, or an aryl group having 6 to 30 carbon atoms which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a hydrocarbon ring group having 6 to 30 carbon atoms which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 20 carbon atoms which is substituted or not substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a hydrocarbon ring group having 6 to 20 carbon atoms which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms which is substituted or not substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a hydrocarbon ring group having 6 to 12 carbon atoms which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which is substituted or not substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a hydrocarbon ring group having 6 to 20 carbon atoms which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which is substituted or not substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a hydrocarbon ring group having 6 to 12 carbon atoms which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which is substituted or not substituted by deuterium, or a phenyl group which is substituted or not substituted by deuterium, or are combined with adjacent groups to form a spiro structure which is substituted or not substituted by deuterium.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms, or a phenyl group, or are bonded to adjacent groups to form a spiro structure.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, methyl, ethyl, propyl, isopropyl or phenyl, or are combined with adjacent groups to form a spiro structure.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently hydrogen, deuterium, methyl or phenyl, or are combined with adjacent groups to form a spiro structure.

In one embodiment of the present specification, R3 and R4 are the same as or different from each other, and are independently a methyl group or a phenyl group, or are combined with adjacent groups to form a spiro structure.

In one embodiment of the present specification, the spiro structure may form a spirofluorene group.

In one embodiment of the present specification, R5 is hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl.

In one embodiment of the present specification, R5 is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.

In one embodiment of the present specification, R5 is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, R5 is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, R5 is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R5 is hydrogen, deuterium, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R5 is hydrogen, deuterium, an alkyl group having 1 to 60 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 60 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, an alkyl group having 1 to 30 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 30 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, an alkyl group having 1 to 20 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted with deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted with deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, phenyl which may be substituted by deuterium, biphenyl which may be substituted by deuterium, or naphthyl which may be substituted by deuterium.

In one embodiment of the present specification, R5 is hydrogen, deuterium, phenyl, biphenyl or naphthyl.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a deuterium-substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a deuterium-substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a deuterium-substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a deuterium-substituted or unsubstituted phenyl group, a deuterium-substituted or unsubstituted biphenyl group, or a deuterium-substituted or unsubstituted naphthyl group.

In one embodiment of the present specification, when R3 and R4 are substituted or unsubstituted aryl groups, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is phenyl, biphenyl or naphthyl.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted divalent heterocyclic group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond, a substituted or unsubstituted arylene group having 6 to 60 carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 2 to 60 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 2 to 30 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 2 to 20 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted divalent heterocyclic group containing O, S or N having 2 to 60 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 30 carbon atoms; or a substituted or unsubstituted divalent heterocyclic group containing O, S or N having 2 to 30 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 20 carbon atoms; or a substituted or unsubstituted divalent heterocyclic group containing O, S or N having 2 to 20 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a directly bonded or substituted or unsubstituted arylene group having 6 to 30 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently an arylene group having 6 to 30 carbon atoms, which is directly bonded or substituted or unsubstituted with deuterium or an alkyl group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, or an arylene group having 6 to 30 carbon atoms which is substituted or unsubstituted with deuterium or an alkyl group having 1 to 30 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, or a substituted or unsubstituted divalent fluorenyl group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently an arylene group having 6 to 30 carbon atoms, which is directly bonded or substituted or unsubstituted with deuterium.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted biphenylene group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group which may be substituted by deuterium or an alkyl group, or a biphenylene group which may be substituted by deuterium or an alkyl group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond, a phenylene group substituted or unsubstituted by deuterium or an alkyl group having 1 to 10 carbon atoms, or a biphenylene group substituted or unsubstituted by deuterium or an alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other and are each independently a direct bond, a phenylene group substituted or unsubstituted by deuterium or an alkyl group having 1 to 3 carbon atoms, or a biphenylene group substituted or unsubstituted by deuterium or an alkyl group having 1 to 3 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group which may be substituted by deuterium or a methyl group, or a biphenylene group which may be substituted by deuterium or a methyl group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group substituted or unsubstituted by a methyl group, or a biphenylene group substituted or unsubstituted by a methyl group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group which may be substituted with a methyl group, or a biphenylene group.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group substituted or unsubstituted by deuterium, or a biphenylene group substituted or unsubstituted by deuterium.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group, or a biphenylene group.

In one embodiment of the present specification, L1 and L2 are the same as each other, and L1 and L2 are directly bonded to each other or are substituted or unsubstituted phenyl groups.

In one embodiment of the present specification, L1 and L2 are the same as each other, and L1 and L2 are directly bonded to each other, or are phenyl groups which may be substituted with deuterium or not.

In one embodiment of the present specification, L1 and L2 are the same as each other, and L1 and L2 are a direct bond or a phenyl group.

In one embodiment of the present specification, L1 and L2 are identical to each other, and L1 and L2 are directly bonded to each other.

In one embodiment of the present specification, L1 is a direct bond, or a substituted or unsubstituted phenyl group.

In one embodiment of the present specification, L1 is a phenyl group which is directly bonded or substituted or unsubstituted with deuterium.

In one embodiment of the present specification, L1 is a direct bond or a phenyl group.

In one embodiment of the present specification, L1 is a direct bond.

In one embodiment of the present specification, L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted biphenylene group.

In one embodiment of the present specification, L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group which may be substituted by deuterium or an alkyl group, or a biphenylene group which may be substituted by deuterium or an alkyl group.

In one embodiment of the present specification, L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group which may be substituted by deuterium or a methyl group, or a biphenylene group which may be substituted by deuterium or a methyl group.

In one embodiment of the present specification, L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group which may be substituted with a methyl group, or a biphenylene group.

In one embodiment of the present specification, L2 are the same as or different from each other, and are each independently a direct bond, a phenylene group, or a biphenylene group.

In one embodiment of the present specification, L2 is a direct bond.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted arylene group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 30 carbon atoms.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heterocyclic group containing O, S or N having 2 to 60 carbon atoms.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms; or a substituted or unsubstituted heterocyclic group containing O, S or N having 2 to 30 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 60 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 60 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 3 carbon atoms, or an aryl group having 6 to 10 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 3 carbon atoms, or an aryl group having 6 to 10 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 20 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 20 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 20 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 3 carbon atoms, or an aryl group having 6 to 10 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 20 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 3 carbon atoms, or an aryl group having 6 to 10 carbon atoms.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 20 carbon atoms, which is unsubstituted or substituted with deuterium, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 12 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 20 carbon atoms, which is unsubstituted or substituted with deuterium.

In one embodiment of the present specification, Ar1 is an arylene group having 6 to 20 carbon atoms, which is unsubstituted or substituted with deuterium, an alkyl group having 1 to 3 carbon atoms, or an aryl group having 6 to 10 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 20 carbon atoms, which is unsubstituted or substituted with deuterium.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted tetrahydronaphthyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, or a substituted or unsubstituted carbazolyl group.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted tetrahydronaphthyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group.

In one embodiment of the present specification, Ar1 is phenyl substituted or unsubstituted by deuterium; biphenyl substituted or unsubstituted by deuterium; terphenyl substituted or unsubstituted by deuterium; naphthyl substituted or unsubstituted by deuterium; phenanthryl substituted or unsubstituted by deuterium; tetrahydronaphthyl substituted or unsubstituted by one or more substituents selected from the group consisting of deuterium, alkyl having 1 to 10 carbon atoms, and aryl having 6 to 20 carbon atoms; dibenzofuranyl substituted or unsubstituted by deuterium; or dibenzothiophene substituted or unsubstituted by deuterium.

In one embodiment of the present specification, Ar1 is phenyl substituted or unsubstituted by deuterium; biphenyl substituted or unsubstituted by deuterium; terphenyl substituted or unsubstituted by deuterium; naphthyl substituted or unsubstituted by deuterium; phenanthryl substituted or unsubstituted by deuterium; tetrahydronaphthyl substituted or unsubstituted by one or more substituents selected from the group consisting of deuterium, alkyl having 1 to 3 carbon atoms, and aryl having 6 to 12 carbon atoms; dibenzofuranyl substituted or unsubstituted by deuterium; or dibenzothiophene substituted or unsubstituted by deuterium.

In one embodiment of the present specification, Ar1 is phenyl substituted or unsubstituted by deuterium; biphenyl substituted or unsubstituted by deuterium; terphenyl substituted or unsubstituted by deuterium; naphthyl substituted or unsubstituted by deuterium; phenanthryl substituted or unsubstituted by deuterium; tetrahydronaphthyl substituted or unsubstituted by one or more substituents selected from the group consisting of deuterium, methyl, isopropyl and phenyl; dibenzofuranyl substituted or unsubstituted by deuterium; or dibenzothiophene substituted or unsubstituted by deuterium.

In one embodiment of the present specification, Ar1 is phenyl; biphenyl; terphenyl; naphthyl; phenanthryl; triphenylene; tetrahydronaphthyl which may be substituted or unsubstituted with one or more substituents selected from the group consisting of methyl, isopropyl and phenyl; dibenzofuranyl; dibenzothienyl; or carbazolyl.

In one embodiment of the present specification, Ar1 is phenyl; biphenyl; terphenyl; naphthyl; phenanthryl; tetrahydronaphthyl which may be substituted or unsubstituted by one or more substituents selected from the group consisting of methyl, isopropyl and phenyl; dibenzofuranyl; or dibenzothiophenyl.

In one embodiment of the present specification, a is an integer of 1 to 8.

In one embodiment of the present specification, a is an integer of 1 to 4.

In one embodiment of the present specification, a is 8.

In one embodiment of the present specification, a is 7.

In one embodiment of the present specification, a is 6.

In one embodiment of the present specification, a is 5.

In one embodiment of the present specification, a is 4.

In one embodiment of the present specification, a is 3.

In one embodiment of the present specification, a is 2.

In one embodiment of the present specification, a is 1.

In one embodiment of the present specification, b is an integer of 1 to 3.

In one embodiment of the present specification, b is 3.

In one embodiment of the present specification, b is 2.

In one embodiment of the present specification, b is 1.

In one embodiment of the present specification, c is an integer of 1 to 7.

In one embodiment of the present specification, c is 7.

In one embodiment of the present specification, c is 6.

In one embodiment of the present specification, c is 5.

In one embodiment of the present specification, c is 4.

In one embodiment of the present specification, c is 3.

In one embodiment of the present specification, c is 2.

In one embodiment of the present specification, c is 1.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by the following Chemical Formula 2.

[Chemical formula 2]

In the above chemical formula 2,

Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in the above Chemical Formula 1.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by the following Chemical Formula 3.

[Chemical formula 3]

In the above chemical formula 3,

R1, R2, L1, L2, Ar1, a and b are defined as in the above chemical formula 1,

R3 and R4 are the same or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group,

R5' is hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl,

When R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, R5' is a substituted or unsubstituted aryl group.

In one embodiment of the present specification, R5' is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.

In one embodiment of the present specification, R5' is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, R5' is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, R5' is hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R5' is hydrogen, deuterium, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R5′ is hydrogen, deuterium, an alkyl group having 1 to 60 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 60 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5' is hydrogen, deuterium, an alkyl group having 1 to 30 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 30 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5′ is hydrogen, deuterium, an alkyl group having 1 to 20 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5' is hydrogen, deuterium, an alkyl group having 1 to 10 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5' is hydrogen, deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted with deuterium.

In one embodiment of the present specification, R5' is hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5′ is hydrogen, deuterium, an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R5' is hydrogen, deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted with deuterium.

In one embodiment of the present specification, R5′ is hydrogen, deuterium, phenyl which may be substituted by deuterium, biphenyl which may be substituted by deuterium, or naphthyl which may be substituted by deuterium.

In one embodiment of the present specification, R5' is hydrogen, deuterium, phenyl, biphenyl or naphthyl.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by the following Chemical Formula 1-1.

[Chemical formula 1-1]

In the above chemical formula 1-1,

R1, R3 to R5, L1, L2, Ar1, a and c are defined as in the above Chemical Formula 1,

R2' is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

In one embodiment of the present specification, R2′ is a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.

In one embodiment of the present specification, R2′ is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

In one embodiment of the present specification, R2' is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, R2′ is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.

In one embodiment of the present specification, R2′ is a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms.

In one embodiment of the present specification, R2' is a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, or a substituted or unsubstituted phenyl group.

In one embodiment of the present specification, R2′ is an alkyl group having 1 to 60 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 60 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R2′ is an alkyl group having 1 to 30 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 30 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R2′ is an alkyl group having 1 to 20 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 20 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R2′ is an alkyl group having 1 to 10 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 12 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R2′ is an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium, or an aryl group having 6 to 10 carbon atoms which may be substituted by deuterium.

In one embodiment of the present specification, R2′ is an alkyl group having 1 to 3 carbon atoms which may be substituted by deuterium or an alkyl group which may be substituted by deuterium or an phenyl group which may be substituted by deuterium.

In one embodiment of the present specification, R2′ is a methyl group, an ethyl group, a propyl group, an isopropyl group, or a phenyl group which may be substituted with deuterium.

In one embodiment of the present specification, R2' is a methyl group, an ethyl group, a propyl group, an isopropyl group or a phenyl group.

In one embodiment of the present specification, R2' is a methyl group, an isopropyl group or a phenyl group.

In one embodiment of the present specification, R2' is a methyl group or a phenyl group.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by any one of the following Chemical Formulas 2-1 to 2-3.

[Chemical formula 2-1]

[Chemical formula 2-2]

[Chemical formula 2-3]

In the above chemical formulas 2-1 to 2-3,

Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in the above Chemical Formula 1.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by any one of the following Chemical Formulas 2-1, 2-2, and 2-3-1.

[Chemical formula 2-1]

[Chemical formula 2-2]

[Chemical formula 2-3-1]

In the above chemical formulas 2-1, 2-2 and 2-3-1,

Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in the above Chemical Formula 1.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by the following Chemical Formula 3-1 or 3-2.

[Chemical formula 3-1]

[Chemical formula 3-2]

In the above chemical formulas 3-1 and 3-2,

Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in the above Chemical Formula 1.

In one embodiment of the present specification, the above Chemical Formula 1 is represented by any one of the following compounds.

The compound represented by Chemical Formula 1 according to one embodiment of the present specification can produce a core structure as shown in the following Reaction Formula 1. Substituents can be bonded by methods known in the art, and the type, position or number of substituents can be changed according to techniques known in the art.

<Reaction formula 1>

In the above Reaction Formula 1, the definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in the above Chemical Formula 1.

In the above reaction formula 1, X can be a halogen group such as Cl, Br, I, etc.

In the above reaction formula 1, a process for synthesizing a compound having a specific substituent bonded to a specific position is illustrated, but compounds falling within the scope of the above chemical formula 1 can be synthesized using starting materials, intermediate materials, etc. known in the technical field and by synthesis methods known in the technical field.

In the present specification, compounds having various energy band gaps can be synthesized by introducing various substituents into the core structure of the compound represented by the above Chemical Formula 1. In addition, in the present specification, the HOMO and LUMO energy levels of the compound can also be adjusted by introducing various substituents into the core structure of the structure shown above.

In addition, the present specification provides an organic light-emitting device including the above-mentioned compound.

In the present specification, when it is mentioned that a certain component is located “on” another component, it not only includes the case where the certain component is in contact with the other component, but also includes the case where other components exist between the two components.

In the present specification, when it is indicated that a certain part “includes/comprises” a certain constituent element, unless there is a particular description to the contrary, it means that other constituent elements may be further included, rather than excluding other constituent elements.

The organic light-emitting device according to the present specification is characterized by comprising: an anode, a cathode, and one or more organic layers disposed between the anode and the cathode, wherein one or more of the organic layers contains the compound represented by the above Chemical Formula 1.

The organic light-emitting device of the present specification uses the compound of Chemical Formula 1 to form an organic layer, and can also be manufactured using a common method and material for manufacturing an organic light-emitting device.

The above compounds can be used to form an organic layer by vacuum evaporation or solution coating when manufacturing an organic light-emitting device. Here, the so-called solution coating method refers to spin coating, dip coating, inkjet printing, screen printing, spraying, roller coating, etc., but is not limited to these.

The organic layer of the organic light-emitting device of the present specification may be formed by a single-layer structure or a multi-layer structure in which two or more organic layers are stacked. For example, the organic light-emitting device of the present invention may have a structure including a hole transport layer, a hole injection layer, an electron blocking layer, a hole transport and injection layer, an electron transport layer, an electron injection layer, a hole blocking layer, and one or more of the electron injection and transport layers as organic layers. However, the structure of the organic light-emitting device of the present specification is not limited thereto and may include a smaller number or a larger number of organic layers.

In the organic light-emitting device of the present specification, the organic layer includes a hole injection layer, a hole transport layer, or a hole injection and transport layer, and the hole injection layer, the hole transport layer, or the hole injection and transport layer may contain the compound represented by the above Chemical Formula 1.

In the organic light-emitting device of the present specification, the organic layer includes a hole transport layer or a hole injection layer, and the hole transport layer or the hole injection layer may include the compound represented by the above Chemical Formula 1.

In one embodiment of the present specification, the organic layer includes an electron blocking layer, and the electron blocking layer includes the compound represented by Chemical Formula 1.

In one embodiment of the present specification, the organic layer includes an electron injection layer, an electron transport layer, an electron transport and injection layer, or a hole blocking layer, and the electron injection layer, the electron transport layer, the electron transport and injection layer, or the hole blocking layer may contain the compound represented by the above-mentioned Chemical Formula 1.

In the organic light-emitting device of the present specification, the organic layer includes an electron transport layer, an electron injection layer, or an electron transport and injection layer, and the electron transport layer, the electron injection layer, or the electron transport and injection layer may contain the compound represented by the above Chemical Formula 1.

In one embodiment of the present specification, the organic layer includes an electron adjustment layer, and the electron adjustment layer may include the compound represented by the above Chemical Formula 1.

In one embodiment of the present specification, the organic layer includes a hole blocking layer, and the hole blocking layer includes the compound represented by Chemical Formula 1.

In the organic light-emitting device of the present specification, the organic layer is an electron transport and injection layer, and the electron transport and injection layer includes the compound represented by the above Chemical Formula 1.

In one embodiment of the present specification, the thickness of the organic layer containing the compound of the above Chemical Formula 1 is to Preferably to More preferably to

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer includes the compound represented by the above Chemical Formula 1.

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer includes the compound represented by the above Chemical Formula 1 as a main component.

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer includes the compound represented by the above Chemical Formula 1 as a dopant.

In another embodiment, the organic layer may further include other organic compounds, metals or metal compounds in addition to the compound represented by Chemical Formula 1.

In the organic light-emitting device according to one embodiment of the present specification, the light-emitting layer further includes a fluorescent dopant or a phosphorescent dopant. In this case, the dopant in the light-emitting layer includes 1 part by weight to 50 parts by weight relative to 100 parts by weight of the host.

As another example, the organic layer includes a light-emitting layer, and the light-emitting layer includes the compound represented by the chemical formula 1 as a host, and may further include another host.

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer includes an anthracene compound.

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer contains an anthracene compound as a main component.

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer includes an anthracene-based compound as a host and further includes a dopant.

In one embodiment of the present specification, the dopant includes an arylamine compound, a heterocyclic compound containing boron and nitrogen, or an Ir complex.

In one embodiment of the present specification, the organic layer includes a light-emitting layer, and the light-emitting layer includes an anthracene compound as a host and an arylamine compound as a dopant.

In one embodiment of the present specification, the organic light-emitting device of the present specification may also include a hole transport layer, a hole injection layer, an electron blocking layer, an electron injection and transport layer, an electron transport layer, an electron injection layer, a hole blocking layer, and one or more organic layers in the hole transport and injection layer.

In one embodiment of the present specification, the organic light-emitting device includes: an anode, a cathode, and two or more organic layers arranged between the anode and the cathode, and at least one of the two or more organic layers contains the compound represented by the above Chemical Formula 1.

In one embodiment of the present specification, the two or more organic layers may be two or more selected from the group consisting of a light emitting layer, a hole transport layer, a hole injection layer, a hole transport and injection layer, and an electron blocking layer.

In one embodiment of the present specification, the two or more organic layers may be selected from the group consisting of a light emitting layer, an electron transport layer, an electron injection layer, an electron transport and injection layer, an electron regulating layer, and a hole blocking layer.

In one embodiment of the present specification, the organic layer includes two or more electron transport layers, and at least one of the two or more electron transport layers contains the compound represented by the chemical formula 1. Specifically, in one embodiment of the present specification, the compound represented by the chemical formula 1 may be contained in one of the two or more electron transport layers, or may be contained in each of the two or more electron transport layers.

In one embodiment of the present specification, when the compound is included in each of the two or more electron transport layers, materials other than the compound represented by the chemical formula 1 may be the same as or different from each other.

When the organic layer containing the compound represented by the above chemical formula 1 is an electron transport layer, an electron injection layer, or an electron transport and injection layer, the above electron transport layer, the electron injection layer, or the electron transport and injection layer may further include an n-type dopant. The above n-type dopant may use materials known in the art, for example, a metal or a metal complex may be used. For example, the electron transport layer containing the compound represented by the above chemical formula 1 may further include LiQ (LithiumQuinolate, quinoline lithium). According to an example, the compound represented by the above chemical formula 1 and the above n-type dopant may be included in a weight ratio of 2:8 to 8:2, for example, 4:6 to 6:4.

According to an example, the compound represented by the above Chemical Formula 1 and the above n-type dopant may be included in a weight ratio of 1:1.

In one embodiment of the present specification, the organic layer includes two or more hole transport layers, and at least one of the two or more hole transport layers contains the compound represented by the chemical formula 1. Specifically, in one embodiment of the present specification, the compound represented by the chemical formula 1 may be contained in one of the two or more hole transport layers, or may be contained in each of the two or more hole transport layers.

In one embodiment of the present specification, when the compound represented by the above Chemical Formula 1 is included in each of the two or more hole transport layers, materials other than the compound represented by the above Chemical Formula 1 may be the same as or different from each other.

In one embodiment of the present specification, the organic layer may include a hole injection layer or a hole transport layer in addition to the organic layer including the compound represented by the above Chemical Formula 1, wherein the hole injection layer or the hole transport layer includes a compound containing an arylamine group, a carbazole group or a benzocarbazole group.

In one embodiment of the present specification, the organic light-emitting device may be a (normal type) organic light-emitting device having a structure in which an anode, one or more organic layers, and a cathode are sequentially stacked on a substrate.

In one embodiment of the present specification, the organic light emitting device may be an organic light emitting device of a reverse structure (inverted type) in which a cathode, one or more organic layers, and an anode are sequentially stacked on a substrate.

In the organic light-emitting device of the present invention, the organic layer may include an electron blocking layer, and the electron blocking layer may be made of materials known in the technical field.

For example, the organic light emitting device may have a stacked structure as shown below, but is not limited thereto.

(1) Anode/hole transport layer/light-emitting layer/cathode

(2) Anode/hole injection layer/hole transport layer/light-emitting layer/cathode

(3) Anode/hole injection layer/hole buffer layer/hole transport layer/light-emitting layer/cathode

(4) Anode/hole transport layer/light-emitting layer/electron transport layer/cathode

(5) Anode/hole transport layer/light-emitting layer/electron transport layer/electron injection layer/cathode

(6) Anode/hole injection layer/hole transport layer/light-emitting layer/electron transport layer/cathode

(7) Anode/hole injection layer/hole transport layer/light-emitting layer/electron transport layer/electron injection layer/cathode

(8) Anode/hole injection layer/hole buffer layer/hole transport layer/light-emitting layer/electron transport layer/cathode

(9) Anode/hole injection layer/hole buffer layer/hole transport layer/light-emitting layer/electron transport layer/electron injection layer/cathode

(10) Anode/hole transport layer/electron blocking layer/light-emitting layer/electron transport layer/cathode

(11) Anode/hole transport layer/electron blocking layer/light-emitting layer/electron transport layer/electron injection layer/cathode

(12) Anode/hole injection layer/hole transport layer/electron blocking layer/light-emitting layer/electron transport layer/cathode

(13) Anode/hole injection layer/hole transport layer/electron blocking layer/light-emitting layer/electron transport layer/electron injection layer/cathode

(14) Anode/hole transport layer/light-emitting layer/hole blocking layer/electron transport layer/cathode

(15) Anode/hole transport layer/light-emitting layer/hole blocking layer/electron transport layer/electron injection layer/cathode

(16) Anode/hole injection layer/hole transport layer/light-emitting layer/hole blocking layer/electron transport layer/cathode

(17) Anode/hole injection layer/hole transport layer/light-emitting layer/hole blocking layer/electron transport layer/electron injection layer/cathode

The structure of the organic light-emitting device of the present specification may have the structure shown in FIG. 1 and FIG. 2 , but is not limited thereto.

1 illustrates a structure of an organic light emitting device in which a substrate 1, an anode 2, an organic layer 10, and a cathode 9 are sequentially stacked. In the above structure, the above compound may be contained in the above organic layer 10.

2 illustrates a structure of an organic light-emitting device in which a substrate 1, an anode 2, a hole injection layer 3, a hole transport layer 4, an electron blocking layer 5, a light-emitting layer 6, a hole blocking layer 7, an electron injection and transport layer 8, and a cathode 9 are sequentially stacked. In the structure described above, the above-mentioned compound may be contained in the hole injection layer 3, the hole transport layer 4, the electron blocking layer 5, the light-emitting layer 6, the hole blocking layer 7, or the electron injection and transport layer 8.

In one embodiment of the present specification, the electron blocking layer and the light emitting layer may be disposed adjacent to each other. For example, the electron blocking layer and the light emitting layer may be disposed in physical contact with each other.

In one embodiment of the present specification, the hole transport layer and the electron blocking layer may be disposed adjacent to each other. For example, the hole transport layer and the electron blocking layer may be disposed in physical contact with each other.

The organic light-emitting device of the present specification can be manufactured using materials and methods known in the technical field, except that at least one layer of the organic material layer contains the above compound, that is, the compound represented by the above Chemical Formula 1.

When the organic light-emitting device includes a plurality of organic layers, the organic layers may be formed of the same substance or different substances.

For example, the organic light-emitting device according to the present specification can be manufactured as follows: using a PVD (physical vapor deposition) method such as sputtering or e-beam evaporation, a metal or a conductive metal oxide or an alloy thereof is evaporated on a substrate to form an anode, and then an organic layer including a hole injection layer, a hole transport layer, a light-emitting layer, an electron blocking layer, an electron transport layer and an electron injection layer is formed on the anode, and then a substance that can be used as a cathode is evaporated on the organic layer. In addition to this method, an organic light-emitting device can also be manufactured by sequentially evaporating a cathode substance, an organic layer, and an anode substance on a substrate.

The organic layer may further include one or more of a hole transport layer, a hole injection layer, an electron blocking layer, an electron injection and transport layer, an electron transport layer, an electron injection layer, a hole blocking layer, and a hole transport and injection layer.

The organic layer may be a multilayer structure including a hole injection layer, a hole transport layer, an electron injection and transport layer, an electron blocking layer, a light emitting layer and an electron transport layer, an electron injection layer, an electron injection and transport layer, but is not limited thereto and may also be a single layer structure. In addition, the organic layer may be made of various polymer materials and by a solvent process other than evaporation, such as spin coating, dip coating, blade coating, screen printing, inkjet printing, or thermal transfer to form a smaller number of layers.

The anode is an electrode for injecting holes. As the anode material, in order to smoothly inject holes into the organic layer, a material with a large work function is preferably used. Specific examples of the anode material that can be used in the present invention include metals such as vanadium, chromium, copper, zinc, gold, or their alloys; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO, Indium Tin Oxide), indium zinc oxide (IZO, Indium Zinc Oxide); combinations of metals and oxides such as ZnO:Al or SnO ₂ :Sb; conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDOT), polypyrrole, and polyaniline, but are not limited thereto.

The cathode is an electrode for injecting electrons. In order to facilitate the injection of electrons into the organic layer, the cathode material is preferably a material with a small work function. Specific examples of cathode materials include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead, or alloys thereof; multilayer structure materials such as LiF/Al or _LiO2 /Al, etc., but are not limited thereto.

The hole injection layer is a layer that plays a role in making the injection of holes from the anode to the light-emitting layer smooth. The hole injection material is a material that can receive holes well from the anode at a low voltage. The HOMO (highest occupied molecular orbital) of the hole injection material is preferably between the work function of the anode material and the HOMO of the surrounding organic layer. As specific examples of hole injection materials, there are metal porphyrines, oligothiophenes, arylamine organics, hexanitrile hexaazatriphenylene organics, quinacridone organics, perylene organics, anthraquinone and polyaniline and polythiophene conductive polymers, but are not limited to this. The thickness of the hole injection layer can be 1 to 150nm. When the thickness of the hole injection layer is more than 1nm, it has the advantage of preventing the hole injection characteristics from being reduced. When it is less than 150nm, it has the advantage of preventing the driving voltage from rising when the thickness of the hole injection layer is too thick in order to improve the migration of holes.

The hole transport layer can play a role in making the hole transport smooth. The hole transport material is a material that can receive holes from the anode or the hole injection layer and transfer them to the light-emitting layer, and a material with a large hole mobility is suitable. As specific examples, there are aromatic amine organic substances, conductive polymers, and block copolymers with both conjugated parts and non-conjugated parts, but are not limited to these.

A hole buffer layer may be further disposed between the hole injection layer and the hole transport layer, and may include hole injection or transport materials known in the art.

An electron blocking layer may be provided between the hole transport layer and the light emitting layer. The electron blocking layer may be made of the above-mentioned compounds or materials known in the art.

The light-emitting layer can emit red, green or blue light and can be formed of a phosphorescent material or a fluorescent material. The light-emitting material is a material that can receive holes and electrons from the hole transport layer and the electron transport layer respectively and combine them to emit light in the visible light region, and is preferably a material with high quantum efficiency for fluorescence or phosphorescence. Specific examples include 8-hydroxy-quinoline aluminum complex (Alq ₃ ); carbazole compounds; dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compounds; benzo azole, benzothiazole and benzimidazole compounds; poly(p-phenylene vinylene) (PPV) polymers; spiro compounds; polyfluorene, rubrene, etc., but are not limited to these.

The main material of the light-emitting layer includes aromatic fused ring derivatives or heterocyclic compounds. Specifically, aromatic fused ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, etc., and heterocyclic compounds include carbazole derivatives, dibenzofuran derivatives, ladder-type furan compounds, etc. Pyrimidine derivatives, etc., but are not limited thereto.

When the light-emitting layer emits red light, as a light-emitting dopant, phosphorescent substances such as PIQIr(acac) (bis(1-phenylisoquinoline)acetylacetonateiridium), PQIr(acac) (bis(1-phenylquinoline)acetylacetonateiridium), PQIr(tris(1-phenylquinoline)iridium), PtOEP (octaethylporphyrin platinum), or fluorescent substances such as _Alq3 (tris(8-hydroxyquinolino)aluminum), can be used, but are not limited to these. When the light-emitting layer emits green light, as a light-emitting dopant, phosphorescent materials such as Ir(ppy) ₃ (fac tris(2-phenylpyridine)iridium, face tris(2-phenylpyridine)iridium) or fluorescent materials such as Alq ₃ (tris(8-hydroxyquinoline)aluminum) can be used, but the invention is not limited thereto. When the light-emitting layer emits blue light, as a light-emitting dopant, phosphorescent materials such as (4,6-F ₂ ppy) ₂ Irpic or fluorescent materials such as spiro-DPVBi, spiro-6P, distyrylbenzene (DSB), distyrylaryl (DSA), PFO-based polymers, and PPV-based polymers can be used, but the invention is not limited thereto.

A hole blocking layer may be provided between the electron transport layer and the light emitting layer, and a material known in the technical field may be used.

The above-mentioned electron transport layer can play a role in making the transmission of electrons smooth. The electron transport material is a material that can receive electrons well from the cathode and transfer them to the light-emitting layer, and is suitable for materials with high electron mobility. As specific examples, there are the above-mentioned compounds or Al complexes of 8-hydroxyquinoline, complexes containing Alq ₃ , organic free radical compounds, hydroxyflavone-metal complexes, etc., but are not limited to this. The thickness of the electron transport layer can be 1 to 50nm. When the thickness of the electron transport layer is more than 1nm, it has the advantage of preventing the electron transport characteristics from being reduced. When it is less than 50nm, it has the advantage of preventing the driving voltage from rising in order to improve the migration of electrons when the thickness of the electron transport layer is too thick.

The electron injection layer can play a role in facilitating the injection of electrons. As the electron injection material, the following compounds are preferred: compounds that have the ability to transport electrons, have the effect of injecting electrons from the cathode, have an excellent electron injection effect on the light-emitting layer or the light-emitting material, prevent the excitons generated in the light-emitting layer from migrating to the hole injection layer, and have excellent thin film forming ability. Specifically, there are fluorenone, anthraquinone dimethane, diphenoquinone, thiopyran dioxide, Azoles, Examples include, but are not limited to, diazole, triazole, imidazole, perylenetetracarboxylic acid, fluorenylene methane, anthrone, and derivatives thereof, metal coordination compounds, and nitrogen-containing five-membered ring derivatives.

Examples of the metal coordination compounds include, but are not limited to, 8-hydroxyquinoline lithium, bis(8-hydroxyquinoline) zinc, bis(8-hydroxyquinoline) copper, bis(8-hydroxyquinoline) manganese, tris(8-hydroxyquinoline) aluminum, tris(2-methyl-8-hydroxyquinoline) aluminum, tris(8-hydroxyquinoline) gallium, bis(10-hydroxybenzo[h]quinoline) beryllium, bis(10-hydroxybenzo[h]quinoline) zinc, bis(2-methyl-8-quinoline) gallium chloride, bis(2-methyl-8-quinoline)(o-cresol) gallium, bis(2-methyl-8-quinoline)(1-naphthol) aluminum, and bis(2-methyl-8-quinoline)(2-naphthol) gallium.

The hole blocking layer is a layer that prevents holes from reaching the cathode and can usually be formed using the same conditions as the hole injection layer. Examples of the compound include, but are not limited to, oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, BCP, and aluminum complexes.

The organic light emitting device according to the present invention may be a top emission type, a bottom emission type, or a bi-directional emission type according to the materials used.

Below, in order to specifically describe this specification, an embodiment will be cited to describe in detail. However, the embodiments according to this specification can be deformed into various different forms, and it is not interpreted that the scope of this application is limited to the embodiments described in detail below. The embodiments of this application are provided to more completely describe this specification to those skilled in the art.

<Synthesis Example>

Synthesis Example 1. Synthesis of Compound 1

Toluene (300 ml) was added to N-([1,1',4',1"-terphenyl]-4-yl)-9,9-dimethyl-9H-fluoren-2-amine (20.0 g, 45.70 mmol), 6-bromo-7-methyl-1,2,3,4-tetrahydronaphthalene (10.50 g, 46.62 mmol), and sodium tert-butoxide (5.41 g, 56.27 mmol), followed by heating and stirring for 10 minutes. Bis(tri-tert-butylphosphine)palladium (0.10 g, 0.20 mmol) dissolved in toluene (30 ml) was added to the above mixture, followed by heating and stirring for 1 hour. After the reaction was completed and filtered, the layers were separated with toluene and water. After removing the solvent, the mixture was recrystallized with ethyl acetate to obtain the above compound 1 (20.0 g, 75.22% yield). (MS[M+H] ⁺ ＝582)

Synthesis Example 2. Synthesis of Compound 2

Using 9,9-dimethyl-3-phenyl-9H-fluorene-2-amine (10.0 g, 35.04 mmol) and 6-bromo-7-isopropyl-1,2,3,4-tetrahydronaphthalene (9.05 g, 35.74 mmol), the above-mentioned compound 2 (17.5 g, 79.28% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝630)

Synthesis Example 3. Synthesis of Compound 3

Using N-([1,1'-biphenyl]-4-yl)-9,9-dimethyl-3-phenyl-9H-fluoren-2-amine (20.0 g, 45.70 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (13.12 g, 46.62 mmol), the above-mentioned compound 3 (22.0 g, 75.47% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝638)

Synthesis Example 4. Synthesis of Compound 4

Using 9,9-dimethyl-N,3-diphenyl-9H-fluoren-2-amine (20.0 g, 55.33 mmol) and 6-bromo-1,1,4,4-tetramethyl-7-benzene-1,2,3,4-tetrahydronaphthalene (19.37 g, 56.43 mmol), the above-mentioned compound 4 (27.0 g, 78.22% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝624)

Synthesis Example 5. Synthesis of Compound 5

Using 9,9-dimethyl-3-phenyl-9H-fluorene-2-amine (10.0 g, 35.04 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (10.05 g, 35.74 mmol), the above-mentioned compound 5 (19.0 g, 79.04% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS [M+H] ⁺ = 686)

Synthesis Example 6. Synthesis of Compound 6

Using 9,9-dimethyl-3-phenyl-9H-fluorene-2-amine (10.0 g, 35.04 mmol) and 5-bromo-1,1,4,4,6-pentamethyl-1,2,3,4-tetrahydronaphthalene (10.05 g, 35.74 mmol), the above-mentioned compound 6 (18.5 g, 76.96% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝686)

Synthesis Example 7. Synthesis of Compound 7

Using 3,9,9-triphenyl-9H-fluorene-2-amine (10.0 g, 24.42 mmol) and 6-bromo-7-isopropyl-1,2,3,4-tetrahydronaphthalene (6.31 g, 24.91 mmol), the above-mentioned compound 7 (14.5 g, 78.74% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝754)

Synthesis Example 8. Synthesis of Compound 8

Using N-([1,1'-biphenyl]-4-yl)-3,9,9-triphenyl-9H-fluoren-2-amine (20.0 g, 35.60 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (10.21 g, 36.32 mmol), the above-mentioned compound 8 (21.0 g, 77.41% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝762)

Synthesis Example 9. Synthesis of Compound 9

Using N,3,9,9-tetraphenyl-9H-fluorene-2-amine (20.0 g, 41.18 mmol) and 6-bromo-1,1,4,4-tetramethyl-7-benzene-1,2,3,4-tetrahydronaphthalene (14.42 g, 42.01 mmol), the above-mentioned compound 9 (24.5 g, 78.54% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝748)

Synthesis Example 10. Synthesis of Compound 10

Using 3,9,9-triphenyl-9H-fluorene-2-amine (10.0 g, 24.42 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (7.00 g, 24.91 mmol), the above-mentioned compound 10 (15.5 g, 78.34% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝810)

Synthesis Example 11. Synthesis of Compound 11

Using 3-(naphthalen-1-yl)-9,9-diphenyl-9H-fluoren-2-amine (10.0 g, 21.76 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (6.24 g, 22.19 mmol), the above-mentioned compound 11 (14.5 g, 77.46%) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝860)

Synthesis Example 12. Synthesis of Compound 12

Using 3-(naphthalen-2-yl)-9,9-diphenyl-9H-fluoren-2-amine (10.0 g, 21.76 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (6.24 g, 22.19 mmol), the above-mentioned compound 12 (15.0 g, 80.13%) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝860)

Synthesis Example 13. Synthesis of Compound 13

Using 3-benzene-9,9'-spirobi[fluorene]-2-amine (10.0 g, 24.54 mmol) and 6-bromo-7-methyl-1,2,3,4-tetrahydronaphthalene (5.63 g, 25.03 mmol), the above-mentioned compound 13 (13.5 g, 78.93% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝696)

Synthesis Example 14. Synthesis of Compound 14

Using 3-benzene-9,9'-spirobi[fluorene]-2-amine (10.0 g, 24.54 mmol) and 6-bromo-1,1,4,4,7-pentamethyl-1,2,3,4-tetrahydronaphthalene (7.04 g, 25.03 mmol), the above-mentioned compound 14 (15.5 g, 78.15% yield) was obtained by the same method as the above-mentioned Synthesis Example 1. (MS[M+H] ⁺ ＝808)

<Experimental Examples and Comparative Experimental Examples>

Experimental Example 1-1

ITO (indium tin oxide) The glass substrate coated with a film of a thickness of 10000 mm was placed in distilled water dissolved with a detergent and washed with ultrasonic waves. At this time, the detergent used a product of Fischer Co., and the distilled water used distilled water filtered twice by a filter manufactured by Millipore Co. After ITO was washed for 30 minutes, ultrasonic washing was repeated twice with distilled water for 10 minutes. After the distilled water washing was completed, ultrasonic washing was carried out with a solvent of isopropyl alcohol, acetone, and methanol and dried, and then transported to a plasma cleaning machine. In addition, after the above-mentioned substrate was cleaned for 5 minutes using oxygen plasma, the substrate was transported to a vacuum evaporator.

On the ITO transparent electrode prepared in this way, a compound represented by the following chemical formula HAT was applied as On the hole injection layer, a compound represented by the following chemical formula HT1 was deposited as a hole transport layer. After vacuum deposition with a thickness of , as an electron blocking layer, the compound 1 prepared in the above-mentioned Synthesis Example 1 was Next, as a light-emitting layer, a compound represented by the following chemical formula BH and a compound represented by the following chemical formula BD were prepared at a weight ratio of 25:1 and Next, as a hole blocking layer, a compound represented by the following chemical formula HB1 was deposited in the form of Next, as an electron injection and transport layer, a compound represented by the following chemical formula ET1 and a compound represented by the following LiQ were mixed at a weight ratio of 1:1 and On the electron transport and injection layers, lithium fluoride (LiF) is deposited in the form of The thickness of the aluminum A cathode is formed by evaporation with a thickness of , thereby manufacturing an organic light-emitting device.

Experimental Examples 1-2 to 1-8 and Comparative Experimental Examples 1-1 to 1-3

In the above-mentioned Experimental Example 1-1, the organic light-emitting devices of Experimental Examples 1-2 to 1-8 and Comparative Experimental Examples 1-1 to 1-3 were prepared by the same method as the above-mentioned Experimental Example 1-1, except that the compounds described in the following Table 1 were used instead of Compound 1. When a current of 10 mA/cm ² was applied to the organic light-emitting devices manufactured in the Experimental Examples and Comparative Experimental Examples, the voltage, efficiency, color coordinates and life were measured, and the results are shown in the following Table 1. On the other hand, T95 represents the time required for the brightness to decrease from the initial brightness (6000 nits) to 95%.

[Table 1]

As shown in Table 1, it was confirmed that the compound of the present invention has excellent electron blocking ability, and an organic light-emitting device using the compound in an electron blocking layer exhibits remarkable effects in terms of driving voltage, efficiency and life.

By comparing Experimental Examples 1-1 to 1-8 with Comparative Experimental Examples 1-1 to 1-3, it was confirmed that the compounds of the present invention have an alkyl substituent having 1 to 3 carbon atoms on tetralin and an alkyl or aryl substituent on the benzene ring portion of tetralin, thereby enabling the organic light-emitting device using it as an electron blocking layer to have a low driving voltage, high efficiency and long life.

Experimental Examples 2-1 to 2-14 and Comparative Experimental Examples 1-1, 2-1 to 2-4

In the above-mentioned Experimental Example 1-1, as an electron blocking layer, the compound represented by the above-mentioned chemical formula EB1 was used instead of compound 1, and as a hole transport layer, the compound described in the following Table 2 was used instead of the compound represented by the above-mentioned chemical formula HT1. In addition, the organic light-emitting devices of Experimental Examples 2-1 to 2-14 and Comparative Experimental Examples 2-1 to 2-4 were prepared by the same method as the above-mentioned Experimental Example 1-1. When a current of 10 mA/cm ² was applied to the organic light-emitting devices manufactured in the Experimental Examples and Comparative Experimental Examples, the voltage, efficiency, color coordinates and life were measured, and the results are shown in the following Table 2. On the other hand, T95 represents the time required for the brightness to decrease from the initial brightness (6000 nits) to 95%.

[Table 2]

As shown in Table 2, it was confirmed that the compound of the present invention has excellent hole transporting ability, and an organic light-emitting device using the compound in a hole transporting layer exhibits remarkable effects in terms of driving voltage, efficiency and life.

By comparing Experimental Examples 2-1 to 2-14 with Comparative Experimental Examples 1-1, 2-1 and 2-2, it was confirmed that the compounds of the present invention have an alkyl substituent having 1 to 3 carbon atoms on tetralin and an alkyl or aryl substituent on the benzene ring portion of tetralin, thereby enabling the organic light-emitting device using it as a hole transport layer to have a low driving voltage, high efficiency and long life.

By comparing Experimental Examples 2-1 to 2-14 with Comparative Experimental Examples 2-3 and 2-4, it was confirmed that in the compounds of the present invention, in particular, in the compound represented by Chemical Formula 1, when R3 and R4 are aromatic groups, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, the 3rd position of the fluorenyl group is replaced by an aromatic group, and the organic light-emitting device using it as a hole transport layer improves the hole migration characteristics, thereby having a low driving voltage, high efficiency and a long life.

Claims (16)

1. A compound represented by the following chemical formula 1: [Chemical formula 1] In the chemical formula 1, R1 and R2 are the same as or different from each other and are each independently hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl, At least one of R1 and R2 is an alkyl group having 1 to 3 carbon atoms, At least one of R2 is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, R3 and R4 are the same or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, R5 is hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl, When R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, at least one of R5 is a substituted or unsubstituted aryl group, Ar1 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted divalent heterocyclic group, a is an integer from 1 to 8, and when a is 2 or more, R1 are the same or different from each other, b is an integer from 1 to 3, and when b is 2 or more, R2 are the same or different from each other, c is an integer of 1 to 7, and when c is 2 or more, R5 are the same as or different from each other. 2. The compound according to claim 1, wherein the chemical formula 1 is represented by the following chemical formula 2: [Chemical formula 2] In the chemical formula 2, Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in Chemical Formula 1. 3. The compound according to claim 1, wherein the chemical formula 1 is represented by the following chemical formula 3: [Chemical formula 3] In the chemical formula 3, The definitions of R1, R2, L1, L2, Ar1, a and b are the same as those in the chemical formula 1, R3 and R4 are the same or different from each other, and are independently hydrogen, deuterium, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, R5' is hydrogen, deuterium, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl, When R3 and R4 are substituted or unsubstituted aryl groups, or when they are combined with adjacent groups to form a substituted or unsubstituted hydrocarbon ring group, R5' is a substituted or unsubstituted aryl group. 4. The compound according to claim 1, wherein the chemical formula 1 is represented by the following chemical formula 1-1: [Chemical formula 1-1] In the chemical formula 1-1, The definitions of R1, R3 to R5, L1, L2, Ar1, a and c are the same as those in the chemical formula 1, R2' is a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. 5. The compound according to claim 1, wherein the Chemical Formula 1 is represented by any one of the following Chemical Formulas 2-1 to 2-3: [Chemical formula 2-1] [Chemical formula 2-2] [Chemical formula 2-3] In the chemical formulas 2-1 to 2-3, Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in Chemical Formula 1. 6. The compound according to claim 1, wherein the chemical formula 1 is represented by the following chemical formula 3-1 or 3-2: [Chemical formula 3-1] [Chemical formula 3-2] In the chemical formulas 3-1 and 3-2, Definitions of R1 to R5, L1, L2, Ar1, and a to c are the same as those in Chemical Formula 1. 7 . The compound according to claim 1 , wherein L1 and L2 are the same as or different from each other and are each independently an arylene group having 6 to 30 carbon atoms, which is directly bonded or substituted or unsubstituted with deuterium. 8. The compound according to claim 1, wherein the Ar1 are the same as or different from each other and are each independently an aryl group having 6 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is unsubstituted or substituted by deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms. 9 . The compound according to claim 1 , wherein L1 and L2 are the same as or different from each other, and are each independently a direct bond, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted biphenylene group. 10. The compound according to claim 1, wherein the Ar1 are the same as or different from each other and are each independently substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted phenanthrenyl, substituted or unsubstituted tetrahydronaphthyl, substituted or unsubstituted dibenzofuranyl, or substituted or unsubstituted dibenzothiophenyl. 11. The compound according to claim 1, wherein R1 and R2 are the same or different from each other and are each independently hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, The Ar1s are the same or different and are each independently an aryl group having 6 to 30 carbon atoms, which is substituted or unsubstituted with deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms; or a heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is substituted or unsubstituted with deuterium, an alkyl group having 1 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms, L1 and L2 are the same as or different from each other and are each independently a direct bond; an arylene group having 6 to 30 carbon atoms, which is unsubstituted or substituted by deuterium or an alkyl group having 1 to 30 carbon atoms; or a divalent heterocyclic group containing O, S or N having 2 to 30 carbon atoms, which is unsubstituted or substituted by deuterium. 12. The compound according to claim 1, wherein the chemical formula 1 is represented by any one of the following compounds: 13 . An organic light-emitting device, comprising: an anode, a cathode, and one or more organic layers disposed between the anode and the cathode, wherein one or more of the organic layers comprises the compound according to claim 1 . 14. The organic light-emitting device according to claim 13, wherein the organic layer comprises a hole injection layer, a hole transport layer, or a hole injection and transport layer, and the hole injection layer, the hole transport layer, or the hole injection and transport layer contains the compound. 15 . The organic light emitting device according to claim 13 , wherein the organic layer comprises an electron blocking layer, and the electron blocking layer comprises the compound. 16. The organic light-emitting device according to claim 13, wherein the organic layer further comprises one or more of a hole transport layer, a hole injection layer, an electron blocking layer, a hole transport and injection layer, a light-emitting layer, an electron transport layer, an electron injection layer, a hole blocking layer, and an electron injection and transport layer.