WO2020032719A1 - Novel compound and organic light emitting diode using same - Google Patents
Novel compound and organic light emitting diode using same Download PDFInfo
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- WO2020032719A1 WO2020032719A1 PCT/KR2019/010125 KR2019010125W WO2020032719A1 WO 2020032719 A1 WO2020032719 A1 WO 2020032719A1 KR 2019010125 W KR2019010125 W KR 2019010125W WO 2020032719 A1 WO2020032719 A1 WO 2020032719A1
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- light emitting
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- 239000011133 lead Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- XNUVVHVFAAQPQY-UHFFFAOYSA-L manganese(2+) quinolin-8-olate Chemical compound N1=CC=CC2=CC=CC(=C12)[O-].[Mn+2].N1=CC=CC2=CC=CC(=C12)[O-] XNUVVHVFAAQPQY-UHFFFAOYSA-L 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001715 oxadiazolyl group Chemical group 0.000 description 1
- 125000002971 oxazolyl group Chemical group 0.000 description 1
- MPQXHAGKBWFSNV-UHFFFAOYSA-N oxidophosphanium Chemical group [PH3]=O MPQXHAGKBWFSNV-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 150000002964 pentacenes Chemical class 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- FVDOBFPYBSDRKH-UHFFFAOYSA-N perylene-3,4,9,10-tetracarboxylic acid Chemical compound C=12C3=CC=C(C(O)=O)C2=C(C(O)=O)C=CC=1C1=CC=C(C(O)=O)C2=C1C3=CC=C2C(=O)O FVDOBFPYBSDRKH-UHFFFAOYSA-N 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 150000002987 phenanthrenes Chemical class 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 125000001484 phenothiazinyl group Chemical group C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- XPPWLXNXHSNMKC-UHFFFAOYSA-N phenylboron Chemical group [B]C1=CC=CC=C1 XPPWLXNXHSNMKC-UHFFFAOYSA-N 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N phosphine group Chemical group P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- 229960005235 piperonyl butoxide Drugs 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical group C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 150000003413 spiro compounds Chemical class 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- JLBRGNFGBDNNSF-UHFFFAOYSA-N tert-butyl(dimethyl)borane Chemical group CB(C)C(C)(C)C JLBRGNFGBDNNSF-UHFFFAOYSA-N 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- IBBLKSWSCDAPIF-UHFFFAOYSA-N thiopyran Chemical compound S1C=CC=C=C1 IBBLKSWSCDAPIF-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- KWQNQSDKCINQQP-UHFFFAOYSA-K tri(quinolin-8-yloxy)gallane Chemical compound C1=CN=C2C(O[Ga](OC=3C4=NC=CC=C4C=CC=3)OC=3C4=NC=CC=C4C=CC=3)=CC=CC2=C1 KWQNQSDKCINQQP-UHFFFAOYSA-K 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- LALRXNPLTWZJIJ-UHFFFAOYSA-N triethylborane Chemical group CCB(CC)CC LALRXNPLTWZJIJ-UHFFFAOYSA-N 0.000 description 1
- WXRGABKACDFXMG-UHFFFAOYSA-N trimethylborane Chemical group CB(C)C WXRGABKACDFXMG-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- MXSVLWZRHLXFKH-UHFFFAOYSA-N triphenylborane Chemical group C1=CC=CC=C1B(C=1C=CC=CC=1)C1=CC=CC=C1 MXSVLWZRHLXFKH-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- HTPBWAPZAJWXKY-UHFFFAOYSA-L zinc;quinolin-8-olate Chemical compound [Zn+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 HTPBWAPZAJWXKY-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/04—Ortho-condensed systems
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
Definitions
- the present invention relates to a novel heterocyclic compound and an organic light emitting device comprising the same.
- the present invention relates to a novel compound and an organic light emitting device using the same.
- organic light emitting phenomenon refers to a phenomenon of converting electrical energy into light energy using an organic material.
- the organic light emitting device using the organic light emitting phenomenon has a wide viewing angle, excellent contrast, fast response time, excellent brightness, driving voltage and response speed characteristics, many studies have been conducted.
- the organic light emitting device generally has a structure including an anode and a cathode and an organic layer between the anode and the cathode.
- the organic layer is often formed of a multi-layered structure composed of different materials to increase the efficiency and stability of the organic light emitting device, for example, it may be made of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer.
- Patent Document 0001 Korean Patent Publication No. 10-2013-073537
- the present invention relates to a novel compound organic light-emitting device comprising the same.
- the present invention provides a compound represented by the following formula (1).
- L is a direct bond; Substituted or unsubstituted C 1-60 alkylene; Or substituted or unsubstituted C 6-60 arylene,
- Ar is substituted or unsubstituted C 6-60 aryl
- R 1 and R 2 are each independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
- a1 is an integer of 0 to 7
- a2 is an integer of 0 to 5
- Y is O, S, CR 4 R 5 or NR 6 ,
- R 4 and R 5 are each independently substituted or unsubstituted C 1-60 alkyl
- R 6 is substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl,
- Each R 3 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; A substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
- a3 is an integer of 0-4.
- the present invention is a first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers provides an organic light emitting device including the compound of the present invention.
- the compound represented by Chemical Formula 1 may be used as a material of the organic material layer of the organic light emitting diode, and may improve efficiency, low driving voltage, and / or lifetime characteristics in the organic light emitting diode.
- the compound represented by Chemical Formula 1 may be used as a hole injection, hole transport, hole injection and transport, light emission, electron transport, or electron injection material.
- FIG. 1 shows an example of an organic light emitting element composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
- FIG. 2 shows an example of an organic light emitting element consisting of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light emitting layer 7, an electron transport layer 8 and a cathode 4. It is.
- the present invention provides a compound represented by the following formula (1).
- L is a direct bond; Substituted or unsubstituted C 1-60 alkylene; Or substituted or unsubstituted C 6-60 arylene,
- Ar is substituted or unsubstituted C 6-60 aryl
- R 1 and R 2 are each independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
- a1 is an integer of 0 to 7
- a2 is an integer of 0 to 5
- Y is O, S, CR 4 R 5 or NR 6 ,
- R 4 and R 5 are each independently substituted or unsubstituted C 1-60 alkyl
- R 6 is substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl,
- Each R 3 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
- a3 is an integer of 0-4.
- substituted or unsubstituted is deuterium; Halogen group; Nitrile group; Nitro group; Hydroxyl group; Carbonyl group; Ester group; Imide group; Amino group; Phosphine oxide groups; An alkoxy group; Aryloxy group; Alkyl thioxy group; Arylthioxy group; Alkyl sulfoxy groups; Aryl sulfoxy group; Silyl groups; Boron group; Alkyl groups; Cycloalkyl group; Alkenyl groups; Aryl group; Aralkyl group; Ar alkenyl group; Alkylaryl group; Alkylamine group; Aralkyl amine groups; Heteroarylamine group; Arylamine group; Aryl phosphine group; Or substituted or unsubstituted with one or more substituents selected from the group consisting of heterocyclic groups including one or more of N, O, and S atoms, or two or more substituents connected to the substituents
- a substituent to which two or more substituents are linked may be a biphenyl group. That is, the biphenyl group may be an aryl group, and can be interpreted as a substituent to which two phenyl groups are linked.
- carbon number of a carbonyl group in this specification is not specifically limited, It is preferable that it is C1-C40. Specifically, it may be a compound having a structure as follows, but is not limited thereto.
- the ester group may be substituted with oxygen of the ester group having 1 to 25 carbon atoms, a straight chain, branched chain or cyclic alkyl group or an aryl group having 6 to 25 carbon atoms.
- it may be a compound of the following structural formula, but is not limited thereto.
- carbon number of an imide group is not specifically limited, It is preferable that it is C1-C25. Specifically, it may be a compound having a structure as follows, but is not limited thereto.
- the silyl group includes trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, and the like.
- the present invention is not limited thereto.
- the boron group specifically includes, but is not limited to, trimethylboron group, triethylboron group, t-butyldimethylboron group, triphenylboron group, phenylboron group and the like.
- examples of the halogen group include fluorine, chlorine, bromine or iodine.
- the alkyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 1 to 40. According to an exemplary embodiment, the alkyl group has 1 to 20 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms.
- alkyl group examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n -Pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl , n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl
- the alkenyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 2 to 40. According to an exemplary embodiment, the alkenyl group has 2 to 20 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 6 carbon atoms.
- Specific examples include 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- ( Naphthyl-1-yl) vinyl-1-yl, 2,2-bis (diphenyl-1-yl) vinyl-1-yl, stilbenyl group, styrenyl group and the like, but are not limited thereto.
- the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to one embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 6 carbon atoms.
- the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to an exemplary embodiment, the aryl group has 6 to 30 carbon atoms. According to an exemplary embodiment, the aryl group has 6 to 20 carbon atoms.
- the aryl group may be a phenyl group, a biphenyl group, a terphenyl group, etc. as the monocyclic aryl group, but is not limited thereto.
- the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, and the like, but is not limited thereto.
- a fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure.
- the fluorenyl group is substituted, And so on.
- the present invention is not limited thereto.
- the heterocyclic group is a heterocyclic group containing one or more of O, N, Si, and S as a dissimilar element, and the carbon number is not particularly limited, but is preferably 2 to 60 carbon atoms.
- the heterocyclic group include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, pyrimidyl group, triazine group, acridil group , Pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyrido pyrimidinyl group, pyrido pyrazinyl group, pyrazino pyrazinyl group, isoquinoline group, indole group , Carbazole group
- the aryl group in the aralkyl group, aralkenyl group, alkylaryl group, and arylamine group is the same as the example of the aryl group described above.
- the alkyl group among the aralkyl group, the alkylaryl group, and the alkylamine group is the same as the example of the alkyl group described above.
- the heteroaryl of the heteroarylamine may be applied to the description of the aforementioned heterocyclic group.
- the alkenyl group in the aralkenyl group is the same as the example of the alkenyl group described above.
- the description of the aryl group described above may be applied.
- the description of the aforementioned heterocyclic group may be applied except that the heteroarylene is a divalent group.
- the hydrocarbon ring is not a monovalent group, and the description of the aforementioned aryl group or cycloalkyl group may be applied except that two substituents are formed by bonding.
- the heterocyclic group is not a monovalent group, and the description of the aforementioned heterocyclic group may be applied except that two substituents are formed by bonding.
- the compound represented by Chemical Formula 1 is any one selected from the group consisting of compounds represented by the following Chemical Formulas 3 to 8:
- L, Ar, Y, R 1 , R 2 , R 3 , a1, a2, and a3 are as defined above.
- L is a direct bond; Phenylene; Biphenylylene; Terphenylylene; Quarterphenylylene; Naphthylene; Phenanthrenylene; Triphenylenylene; Chrysylene; Fluoranthhenylene; Pyrenylene; Or triphenylenylene.
- L is a direct bond; Phenylene; Biphenylylene; Or naphthylene, more preferably L is a direct bond; Or phenylene.
- Ar is phenyl; Biphenylyl; Terphenylyl; Quarterphenylyl; Naphthyl; Phenanthrenyl; Triphenylenyl; Chrysenyl; Fluoranthenyl; Pyrenyl; Or triphenylenyl.
- Ar is phenyl; Biphenylyl; Or terphenylyl, more preferably Ar is phenyl.
- R 1 and R 2 are each independently hydrogen.
- a1 and a2 are integers of 0 to 2, more preferably 0 or 1.
- R 4 and R 5 are each independently methyl.
- R 6 is phenyl
- R 3 is hydrogen
- a3 is an integer of 0 to 2, more preferably 0 or 1.
- the compound represented by Formula 1 is any one selected from the group consisting of:
- an electron stability is increased by forming a bond between benzoxazole and a carbazole group, and at the same time, the effect may be further enhanced by interaction with the condensed carbazole group. Accordingly, when applied to the organic light emitting device, high efficiency, low driving voltage, high brightness and long life are realized.
- the compound represented by Chemical Formula 1 may be prepared through the following Schemes 1-1 to 1-2.
- Schemes 1-1 to 1-2 the remaining variables except X are as defined above, and X is halogen, preferably bromo or chloro.
- Scheme 1-1 is an amine substitution reaction and a reaction for producing the Sub Compound by reacting a palladium catalyst in the presence of a base.
- Scheme 1-2 is a Suzuki coupling reaction, in which a reactant is reacted with a palladium catalyst in the presence of a base to prepare a compound represented by Chemical Formula 1 of the present invention.
- the manufacturing method may be more specific in the production examples to be described later.
- the present invention provides an organic light emitting device comprising a compound represented by the formula (1).
- the present invention is a first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers comprises a compound represented by Chemical Formula 1. do.
- the organic material layer of the organic light emitting device of the present invention may be formed of a single layer structure, but may be formed of a multilayer structure in which two or more organic material layers are stacked.
- the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and the like as an organic layer.
- the structure of the organic light emitting device is not limited thereto and may include a smaller number of organic layers.
- the organic layer may include a hole injection layer, a hole transport layer, or a layer for simultaneously injecting and transporting holes, and the hole injection layer, a hole transport layer, or a layer for simultaneously injecting and transporting a hole may be represented by Formula 1 above. It includes the compound represented.
- the organic layer may include a light emitting layer, and the light emitting layer includes a compound represented by Chemical Formula 1.
- the organic layer may include an electron transport layer, or an electron injection layer, the electron transport layer, or the electron injection layer comprises a compound represented by the formula (1).
- the electron transport layer, the electron injection layer, or a layer for simultaneously injecting and transporting electrons includes a compound represented by the formula (1).
- the compound represented by Formula 1 according to the present invention has excellent thermal stability, has a deep HOMO level of 6.0 eV or higher, high triplet energy (ET), and hole stability.
- an n-type dopant used in the art may be mixed and used.
- the organic layer may include a light emitting layer and an electron transport layer
- the electron transport layer may include a compound represented by the formula (1).
- the organic light emitting device according to the present invention may be an organic light emitting device having a structure in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate.
- the organic light emitting diode according to the present invention may be an organic light emitting diode having an inverted type structure in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.
- FIGS. 1 and 2 the structure of an organic light emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 and 2.
- FIG. 1 shows an example of an organic light emitting element composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
- the compound represented by Formula 1 may be included in the light emitting layer.
- the compound represented by Formula 1 may be included in one or more layers of the hole injection layer, the hole transport layer, the light emitting layer and the electron transport layer.
- the organic light emitting device according to the present invention may be manufactured by materials and methods known in the art, except that at least one layer of the organic material layer includes the compound represented by Chemical Formula 1.
- the organic material layers may be formed of the same material or different materials.
- the organic light emitting device may be manufactured by sequentially stacking a first electrode, an organic material layer, and a second electrode on a substrate. At this time, by using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation, a metal or conductive metal oxide or an alloy thereof is deposited on the substrate to form an anode.
- PVD physical vapor deposition
- an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer may be formed thereon, and then a material that may be used as a cathode may be deposited thereon.
- an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
- the compound represented by Chemical Formula 1 may be formed as an organic layer by a solution coating method as well as a vacuum deposition method in the manufacture of the organic light emitting device.
- the solution coating method means spin coating, dip coating, doctor blading, inkjet printing, screen printing, spray method, roll coating, etc., but is not limited thereto.
- an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material on a substrate from a cathode material (WO 2003/012890).
- the manufacturing method is not limited thereto.
- the first electrode is an anode
- the second electrode is a cathode
- the first electrode is a cathode
- the second electrode is an anode
- the anode material a material having a large work function is usually preferred to facilitate hole injection into the organic material layer.
- the positive electrode material include metals such as vanadium, chromium, copper, zinc and gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); Combinations of oxides with metals 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, and the like, but are not limited thereto.
- the cathode material is a material having a small work function to facilitate electron injection into the organic material layer.
- the negative electrode material 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 LiO 2 / Al, and the like, but are not limited thereto.
- the hole injection layer is a layer for injecting holes from the electrode, and has a capability of transporting holes to the hole injection material, and has a hole injection effect at the anode, an excellent hole injection effect to the light emitting layer or the light emitting material, and is produced in the light emitting layer
- the compound which prevents the excitons from moving to the electron injection layer or the electron injection material, and is excellent in thin film formation ability is preferable.
- the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic layer.
- hole injection material examples include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene-based Organic materials, anthraquinone and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.
- the hole transport layer is a layer for receiving holes from the hole injection layer and transporting holes to the light emitting layer.
- a hole transporting material is a material capable of transporting holes from an anode or a hole injection layer and transferring them to the light emitting layer. This is suitable. Specific examples thereof include an arylamine-based organic material, a conductive polymer, and a block copolymer having a conjugated portion and a non-conjugated portion together, but are not limited thereto.
- the light emitting material is a material capable of emitting light in the visible region by receiving and combining holes and electrons from the hole transporting layer and the electron transporting layer, respectively, and a material having good quantum efficiency with respect to fluorescence or phosphorescence is preferable.
- Specific examples thereof include 8-hydroxyquinoline aluminum complex (Alq 3 ); Carbazole series compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzo quinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole series compounds; Poly (p-phenylenevinylene) (PPV) -based polymers; Spiro compounds; Polyfluorene, rubrene and the like, but are not limited thereto.
- the light emitting layer may include a host material and a dopant material.
- the host material may be a condensed aromatic ring derivative or a hetero ring-containing compound.
- the condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds
- heterocyclic containing compounds include carbazole derivatives, dibenzofuran derivatives and ladder types. Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.
- Dopant materials include aromatic amine derivatives, styrylamine compounds, boron complexes, fluoranthene compounds, metal complexes, and the like.
- the aromatic amine derivatives include condensed aromatic ring derivatives having a substituted or unsubstituted arylamino group, and include pyrene, anthracene, chrysene and periplanthene having an arylamino group, and styrylamine compounds may be substituted or unsubstituted.
- At least one arylvinyl group is substituted with the above-described arylamine, and one or two or more substituents selected from the group consisting of aryl group, silyl group, alkyl group, cycloalkyl group and arylamino group are substituted or unsubstituted.
- substituents selected from the group consisting of aryl group, silyl group, alkyl group, cycloalkyl group and arylamino group are substituted or unsubstituted.
- styrylamine, styryldiamine, styryltriamine, styryltetraamine and the like but is not limited thereto.
- the metal complex includes, but is not limited to, an iridium complex, a platinum complex, and the like.
- the electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light emitting layer.
- the electron transporting material a material capable of injecting electrons well from the cathode and transferring them to the light emitting layer is suitable. Do. Specific examples include Al complexes of 8-hydroxyquinoline; Complexes including Alq 3 ; Organic radical compounds; Hydroxyflavone-metal complexes and the like, but are not limited thereto.
- the electron transport layer can be used with any desired cathode material as used in the prior art.
- suitable cathode materials are conventional materials having a low work function followed by an aluminum or silver layer. Specifically cesium, barium, calcium, ytterbium and samarium, followed by aluminum layers or silver layers in each case.
- the electron injection layer is a layer for injecting electrons from the electrode, has the ability to transport electrons, has an electron injection effect from the cathode, excellent electron injection effect to the light emitting layer or the light emitting material, and hole injection of excitons generated in the light emitting layer
- the compound which prevents the movement to a layer and is excellent in thin film formation ability is preferable.
- fluorenone anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone and the derivatives thereof, metal Complex compounds, nitrogen-containing five-membered ring derivatives, and the like, but are not limited thereto.
- Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis (8-hydroxyquinolinato) zinc, bis (8-hydroxyquinolinato) copper, bis (8-hydroxyquinolinato) manganese, Tris (8-hydroxyquinolinato) aluminum, tris (2-methyl-8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinolinato) gallium, bis (10-hydroxybenzo [h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( o-cresolato) gallium, bis (2-methyl-8-quinolinato) (1-naphtholato) aluminum, bis (2-methyl-8-quinolinato) (2-naphtolato) gallium, It is not limited to this.
- the organic light emitting device may be a top emission type, a bottom emission type or a double-sided emission type according to the material used.
- the compound represented by Formula 1 may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
- the solid was dissolved in 700 mL of chloroform, washed twice with water, and then the organic layer was separated, anhydrous magnesium sulfate was added thereto, stirred, and filtered. The filtrate was distilled under reduced pressure. The concentrated compound was purified through a silica column using chloroform and ethyl acetate to prepare a white solid compound sub 1-1 (30.4 g, 61%).
- compound sub 1-1 (30.4 g, 90.8 mmol), bis (pinacolato) diboron (26.1 g, 99.8 mmol) and potassium acetate (17.8 g, 181.5 mmol) are mixed and added to 300 ml of dioxane And heated with stirring.
- bis (dibenzylideneacetone) palladium 1.5 g, 3 mol%) and tricyclohexylphosphine (1.5 g, 6 mol%) were added thereto, and the mixture was heated and stirred for 5 hours. After completion of the reaction, the temperature was lowered to room temperature and filtered.
- compound sub 2-1 (36.1 g, 88.1 mmol), bis (pinacolato) diboron (24.9g, 96.9mmol) and potassium acetate (17.3 g, 176.1 mmol) are mixed and added to 300 ml of dioxane And heated with stirring.
- bis (dibenzylideneacetone) palladium 1.5 g, 3 mol%) and tricyclohexylphosphine (1.5 g, 6 mol%) were added thereto, and the mixture was heated and stirred for 5 hours. After completion of the reaction, the temperature was lowered to room temperature and filtered.
- compound sub 1-2 (20.0 g, 46.9 mmol) 2-bromo-7,7-dimethyl-5-phenyl-5,7-dihydroindeno [2,1-b] carbazole (20.5 g, 46.9 mmol) 200 ml of tetrahydrofuran was added and stirred and refluxed. Thereafter, potassium carbonate (19.5 g, 140.8 mmol) was dissolved in 60 ml of water, stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.6 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered.
- the glass substrate coated with ITO indium tin oxide having a thickness of 1,300 ⁇ was placed in distilled water in which detergent was dissolved and ultrasonically cleaned.
- ITO indium tin oxide
- Fischer Co. was used as a detergent
- distilled water was filtered secondly as a filter of Millipore Co. as a distilled water.
- ultrasonic washing was performed twice with distilled water for 10 minutes.
- ultrasonic washing with a solvent of isopropyl alcohol, acetone, methanol, dried and transported to a plasma cleaner.
- the substrate was cleaned for 5 minutes using an oxygen plasma, and then the substrate was transferred to a vacuum evaporator.
- the following HI-1 compound was thermally vacuum deposited to a thickness of 50 kPa to form a hole injection layer.
- a hole transport layer was formed by thermal vacuum deposition of the following HT-1 compound to a thickness of 250 kPa on the hole injection layer, and an electron blocking layer was formed by vacuum depositing the following HT-2 compound to a thickness of 50 kPa on the HT-1 deposition film.
- Compound 1, the following YGH-1 compound, and phosphorescent dopant YGD-1 which were prepared in Preparation Example 1 as a light emitting layer on the HT-2 deposited film, were co-deposited at a weight ratio of 44:44:12 to form a light emitting layer having a thickness of 400 kHz.
- the following ET-1 compound was vacuum deposited to a thickness of 250 kPa on the light emitting layer to form an electron transport layer. Formed. Aluminum was deposited to a thickness of 1000 ⁇ on the electron injection layer to form a cathode.
- the deposition rate of the organic material was maintained at 0.4 ⁇ 0.7 ⁇ / sec
- the aluminum was maintained at the deposition rate of 2 ⁇ / sec
- the vacuum during deposition was maintained at 1 ⁇ 10 -7 ⁇ 5 ⁇ 10 -8 torr It was.
- An organic light emitting diode was manufactured according to the same method as Experimental Example 1 except for using the compound described in Table 1 below instead of compound 1 of Preparation Example 1 in Experimental Example 1.
- An organic light-emitting device was manufactured in the same manner as in Experiment 1, except that Compound 1 in Preparation Example 1 was used instead of Compound 1 of Preparation Example 1.
- the compounds of CE1 to CE3 in Table 1 are as follows.
- the organic light emitting diodes were measured voltage and efficiency at a current density of 10 mA / cm 2 , and lifespan was measured at a current density of 50 mA / cm 2 , and the results are shown in Table 1 below.
- LT95 means 95% of initial luminance.
- substrate 2 anode
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Abstract
The present invention provides a novel compound and an organic light emitting diode using same.
Description
관련 출원(들)과의 상호 인용Cross Citation with Related Application (s)
본 출원은 2018년 8월 9일자 한국 특허 출원 제10-2018-0093318호 및 2019년 8월 8일자 한국 특허 출원 제10-2019-0096889호에 기초한 우선권의 이익을 주장하며, 해당 한국 특허 출원의 문헌에 개시된 모든 내용은 본 명세서의 일부로서 포함된다.This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0093318 dated August 9, 2018 and Korean Patent Application No. 10-2019-0096889 dated August 8, 2019, All content disclosed in the literature is included as part of this specification.
본 발명은 신규한 헤테로 고리 화합물 및 이를 포함하는 유기 발광 소자에 관한 것이다.The present invention relates to a novel heterocyclic compound and an organic light emitting device comprising the same.
본 발명은 신규한 화합물 및 이를 이용한 유기발광 소자에 관한 것이다.The present invention relates to a novel compound and an organic light emitting device using the same.
일반적으로 유기 발광 현상이란 유기 물질을 이용하여 전기에너지를 빛에너지로 전환시켜주는 현상을 말한다. 유기 발광 현상을 이용하는 유기 발광 소자는 넓은 시야각, 우수한 콘트라스트, 빠른 응답 시간을 가지며, 휘도, 구동 전압 및 응답 속도 특성이 우수하여 많은 연구가 진행되고 있다.In general, organic light emitting phenomenon refers to a phenomenon of converting electrical energy into light energy using an organic material. The organic light emitting device using the organic light emitting phenomenon has a wide viewing angle, excellent contrast, fast response time, excellent brightness, driving voltage and response speed characteristics, many studies have been conducted.
유기 발광 소자는 일반적으로 양극과 음극 및 상기 양극과 음극 사이에 유기물 층을 포함하는 구조를 가진다. 상기 유기물 층은 유기 발광 소자의 효율과 안정성을 높이기 위하여 각기 다른 물질로 구성된 다층의 구조로 이루어진 경우가 많으며, 예컨대 정공주입층, 정공수송층, 발광층, 전자수송층, 전자주입층 등으로 이루어질 수 있다. 이러한 유기 발광 소자의 구조에서 두 전극 사이에 전압을 걸어주게 되면 양극에서는 정공이, 음극에서는 전자가 유기물층에 주입되게 되고, 주입된 정공과 전자가 만났을 때 엑시톤(exciton)이 형성되며, 이 엑시톤이 다시 바닥상태로 떨어질 때 빛이 나게 된다.The organic light emitting device generally has a structure including an anode and a cathode and an organic layer between the anode and the cathode. The organic layer is often formed of a multi-layered structure composed of different materials to increase the efficiency and stability of the organic light emitting device, for example, it may be made of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer. When the voltage is applied between the two electrodes in the structure of the organic light emitting device, holes are injected into the organic material layer at the anode, and electrons are injected into the organic material layer, and excitons are formed when the injected holes and the electrons meet each other. When it falls back to the ground, it glows.
상기와 같은 유기 발광 소자에 사용되는 유기물에 대하여 새로운 재료의 개발이 지속적으로 요구되고 있다.There is a continuous demand for the development of new materials for organic materials used in such organic light emitting devices.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
(특허문헌 0001) 한국특허 공개번호 제10-2013-073537호(Patent Document 0001) Korean Patent Publication No. 10-2013-073537
본 발명은 신규한 화합물 이를 포함하는 유기 발광 소자에 관한 것이다.The present invention relates to a novel compound organic light-emitting device comprising the same.
본 발명은 하기 화학식 1로 표시되는 화합물을 제공한다.The present invention provides a compound represented by the following formula (1).
[화학식 1][Formula 1]
상기 화학식 1에서,In Chemical Formula 1,
L는 직접 결합; 치환 또는 비치환된 C1-60 알킬렌; 또는 치환 또는 비치환된 C6-60 아릴렌이고,L is a direct bond; Substituted or unsubstituted C 1-60 alkylene; Or substituted or unsubstituted C 6-60 arylene,
Ar은 치환 또는 비치환된 C6-60 아릴이고,Ar is substituted or unsubstituted C 6-60 aryl,
R1 및 R2는 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 할로알콕시; 트리(C1-60 알킬)실릴; 또는 치환 또는 비치환된 C6-60 아릴이고,R 1 and R 2 are each independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
a1은 0 내지 7의 정수이고,a1 is an integer of 0 to 7,
a2는 0 내지 5의 정수이고,a2 is an integer of 0 to 5,
C1 내지 C4 중 인접한 두개의 탄소는 하기 화학식 2의 *와 각각 연결되고,Two adjacent carbons of C 1 to C 4 are each linked with * in Formula 2,
[화학식 2][Formula 2]
상기 화학식 2에서,In Chemical Formula 2,
Y는 O, S, CR4R5 또는 NR6이고,Y is O, S, CR 4 R 5 or NR 6 ,
R4 및 R5은 각각 독립적으로, 치환 또는 비치환된 C1-60 알킬이고,R 4 and R 5 are each independently substituted or unsubstituted C 1-60 alkyl,
R6는 치환 또는 비치환된 C1-60 알킬; 또는 치환 또는 비치환된 C6-60 아릴이고,R 6 is substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl,
R3은 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 할로알콕시; 트리(C1-60 알킬)실릴; 또는 치환 또는 비치환된 C6-60 아릴이고,Each R 3 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; A substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
a3는 0 내지 4의 정수이다.a3 is an integer of 0-4.
또한, 본 발명은 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 전술한 본 발명의 화합물을 포함하는 유기 발광 소자를 제공한다.In addition, the present invention is a first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers provides an organic light emitting device including the compound of the present invention.
상술한 화학식 1로 표시되는 화합물은 유기 발광 소자의 유기물 층의 재료로서 사용될 수 있으며, 유기 발광 소자에서 효율의 향상, 낮은 구동전압 및/또는 수명 특성을 향상시킬 수 있다. 특히, 상술한 화학식 1로 표시되는 화합물은 정공주입, 정공수송, 정공주입 및 수송, 발광, 전자수송, 또는 전자주입 재료로 사용될 수 있다.The compound represented by Chemical Formula 1 may be used as a material of the organic material layer of the organic light emitting diode, and may improve efficiency, low driving voltage, and / or lifetime characteristics in the organic light emitting diode. In particular, the compound represented by Chemical Formula 1 may be used as a hole injection, hole transport, hole injection and transport, light emission, electron transport, or electron injection material.
도 1은 기판(1), 양극(2), 발광층(3), 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다.FIG. 1 shows an example of an organic light emitting element composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
도 2는 기판 (1), 양극(2), 정공주입층(5), 정공수송층(6), 발광층(7), 전자수송층(8) 및 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다.2 shows an example of an organic light emitting element consisting of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light emitting layer 7, an electron transport layer 8 and a cathode 4. It is.
이하, 본 발명의 이해를 돕기 위하여 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail to aid in understanding the present invention.
본 발명은 하기 화학식 1로 표시되는 화합물을 제공한다.The present invention provides a compound represented by the following formula (1).
[화학식 1][Formula 1]
상기 화학식 1에서,In Chemical Formula 1,
L는 직접 결합; 치환 또는 비치환된 C1-60 알킬렌; 또는 치환 또는 비치환된 C6-60 아릴렌이고,L is a direct bond; Substituted or unsubstituted C 1-60 alkylene; Or substituted or unsubstituted C 6-60 arylene,
Ar은 치환 또는 비치환된 C6-60 아릴이고,Ar is substituted or unsubstituted C 6-60 aryl,
R1 및 R2는 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 할로알콕시; 트리(C1-60 알킬)실릴; 또는 치환 또는 비치환된 C6-60 아릴이고,R 1 and R 2 are each independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
a1은 0 내지 7의 정수이고,a1 is an integer of 0 to 7,
a2는 0 내지 5의 정수이고,a2 is an integer of 0 to 5,
C1 내지 C4 중 인접한 두개의 탄소는 하기 화학식 2의 *와 각각 연결되고,Two adjacent carbons of C 1 to C 4 are each linked with * in Formula 2,
[화학식 2][Formula 2]
상기 화학식 2에서,In Chemical Formula 2,
Y는 O, S, CR4R5 또는 NR6이고,Y is O, S, CR 4 R 5 or NR 6 ,
R4 및 R5은 각각 독립적으로, 치환 또는 비치환된 C1-60 알킬이고,R 4 and R 5 are each independently substituted or unsubstituted C 1-60 alkyl,
R6는 치환 또는 비치환된 C1-60 알킬; 또는 치환 또는 비치환된 C6-60 아릴이고,R 6 is substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl,
R3은 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 할로알콕시; 트리(C1-60 알킬)실릴; 또는 치환 또는 비치환된 C6-60 아릴이고,Each R 3 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,
a3는 0 내지 4의 정수이다.a3 is an integer of 0-4.
본 명세서에서, 
는 다른 치환기에 연결되는 결합을 의미한다.In this specification, Means a bond connected to another substituent.
본 명세서에서 "치환 또는 비치환된" 이라는 용어는 중수소; 할로겐기; 니트릴기; 니트로기; 히드록시기; 카보닐기; 에스테르기; 이미드기; 아미노기; 포스핀옥사이드기; 알콕시기; 아릴옥시기; 알킬티옥시기; 아릴티옥시기; 알킬술폭시기; 아릴술폭시기; 실릴기; 붕소기; 알킬기; 사이클로알킬기; 알케닐기; 아릴기; 아르알킬기; 아르알케닐기; 알킬아릴기; 알킬아민기; 아랄킬아민기; 헤테로아릴아민기; 아릴아민기; 아릴포스핀기; 또는 N, O 및 S 원자 중 1개 이상을 포함하는 헤테로고리기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환되거나, 상기 예시된 치환기 중 2 이상의 치환기가 연결된 치환 또는 비치환된 것을 의미한다. 예컨대, "2 이상의 치환기가 연결된 치환기"는 비페닐기일 수 있다. 즉, 비페닐기는 아릴기일 수도 있고, 2개의 페닐기가 연결된 치환기로 해석될 수 있다.As used herein, the term "substituted or unsubstituted" is deuterium; Halogen group; Nitrile group; Nitro group; Hydroxyl group; Carbonyl group; Ester group; Imide group; Amino group; Phosphine oxide groups; An alkoxy group; Aryloxy group; Alkyl thioxy group; Arylthioxy group; Alkyl sulfoxy groups; Aryl sulfoxy group; Silyl groups; Boron group; Alkyl groups; Cycloalkyl group; Alkenyl groups; Aryl group; Aralkyl group; Ar alkenyl group; Alkylaryl group; Alkylamine group; Aralkyl amine groups; Heteroarylamine group; Arylamine group; Aryl phosphine group; Or substituted or unsubstituted with one or more substituents selected from the group consisting of heterocyclic groups including one or more of N, O, and S atoms, or two or more substituents connected to the substituents exemplified above. . For example, "a substituent to which two or more substituents are linked" may be a biphenyl group. That is, the biphenyl group may be an aryl group, and can be interpreted as a substituent to which two phenyl groups are linked.
본 명세서에서 카보닐기의 탄소수는 특별히 한정되지 않으나, 탄소수 1 내지 40인 것이 바람직하다. 구체적으로 하기와 같은 구조의 화합물이 될 수 있으나, 이에 한정되는 것은 아니다.Although carbon number of a carbonyl group in this specification is not specifically limited, It is preferable that it is C1-C40. Specifically, it may be a compound having a structure as follows, but is not limited thereto.
본 명세서에 있어서, 에스테르기는 에스테르기의 산소가 탄소수 1 내지 25의 직쇄, 분지쇄 또는 고리쇄 알킬기 또는 탄소수 6 내지 25의 아릴기로 치환될 수 있다. 구체적으로, 하기 구조식의 화합물이 될 수 있으나, 이에 한정되는 것은 아니다.In the present specification, the ester group may be substituted with oxygen of the ester group having 1 to 25 carbon atoms, a straight chain, branched chain or cyclic alkyl group or an aryl group having 6 to 25 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.
본 명세서에 있어서, 이미드기의 탄소수는 특별히 한정되지 않으나, 탄소수 1 내지 25인 것이 바람직하다. 구체적으로 하기와 같은 구조의 화합물이 될 수 있으나, 이에 한정되는 것은 아니다.In this specification, although carbon number of an imide group is not specifically limited, It is preferable that it is C1-C25. Specifically, it may be a compound having a structure as follows, but is not limited thereto.
본 명세서에 있어서, 실릴기는 구체적으로 트리메틸실릴기, 트리에틸실릴기, t-부틸디메틸실릴기, 비닐디메틸실릴기, 프로필디메틸실릴기, 트리페닐실릴기, 디페닐실릴기, 페닐실릴기 등이 있으나 이에 한정되지 않는다.In the present specification, specifically, the silyl group includes trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, and the like. However, the present invention is not limited thereto.
본 명세서에 있어서, 붕소기는 구체적으로 트리메틸붕소기, 트리에틸붕소기, t-부틸디메틸붕소기, 트리페닐붕소기, 페닐붕소기 등이 있으나 이에 한정되지 않는다.In the present specification, the boron group specifically includes, but is not limited to, trimethylboron group, triethylboron group, t-butyldimethylboron group, triphenylboron group, phenylboron group and the like.
본 명세서에 있어서, 할로겐기의 예로는 불소, 염소, 브롬 또는 요오드가 있다.In the present specification, examples of the halogen group include fluorine, chlorine, bromine or iodine.
본 명세서에 있어서, 상기 알킬기는 직쇄 또는 분지쇄일 수 있고, 탄소수는 특별히 한정되지 않으나 1 내지 40인 것이 바람직하다. 일 실시상태에 따르면, 상기 알킬기의 탄소수는 1 내지 20이다. 또 하나의 실시상태에 따르면, 상기 알킬기의 탄소수는 1 내지 10이다. 또 하나의 실시상태에 따르면, 상기 알킬기의 탄소수는 1 내지 6이다. 알킬기의 구체적인 예로는 메틸, 에틸, 프로필, n-프로필, 이소프로필, 부틸, n-부틸, 이소부틸, tert-부틸, sec-부틸, 1-메틸-부틸, 1-에틸-부틸, 펜틸, n-펜틸, 이소펜틸, 네오펜틸, tert-펜틸, 헥실, n-헥실, 1-메틸펜틸, 2-메틸펜틸, 4-메틸-2-펜틸, 3,3-디메틸부틸, 2-에틸부틸, 헵틸, n-헵틸, 1-메틸헥실, 사이클로펜틸메틸,사이클로헥틸메틸, 옥틸, n-옥틸, tert-옥틸, 1-메틸헵틸, 2-에틸헥실, 2-프로필펜틸, n-노닐, 2,2-디메틸헵틸, 1-에틸-프로필, 1,1-디메틸-프로필, 이소헥실, 2-메틸펜틸, 4-메틸헥실, 5-메틸헥실 등이 있으나, 이들에 한정되지 않는다.In the present specification, the alkyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 1 to 40. According to an exemplary embodiment, the alkyl group has 1 to 20 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms. Specific examples of the alkyl group include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n -Pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl , n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2 -Dimethylheptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 2-methylpentyl, 4-methylhexyl, 5-methylhexyl, and the like, but is not limited thereto.
본 명세서에 있어서, 상기 알케닐기는 직쇄 또는 분지쇄일 수 있고, 탄소수는 특별히 한정되지 않으나, 2 내지 40인 것이 바람직하다. 일 실시상태에 따르면, 상기 알케닐기의 탄소수는 2 내지 20이다. 또 하나의 실시상태에 따르면, 상기 알케닐기의 탄소수는 2 내지 10이다. 또 하나의 실시상태에 따르면, 상기 알케닐기의 탄소수는 2 내지 6이다. 구체적인 예로는 비닐, 1-프로페닐, 이소프로페닐, 1-부테닐, 2-부테닐, 3-부테닐, 1-펜테닐, 2-펜테닐, 3-펜테닐, 3-메틸-1-부테닐, 1,3-부타디에닐, 알릴, 1-페닐비닐-1-일, 2-페닐비닐-1-일, 2,2-디페닐비닐-1-일, 2-페닐-2-(나프틸-1-일)비닐-1-일, 2,2-비스(디페닐-1-일)비닐-1-일, 스틸베닐기, 스티레닐기 등이 있으나 이들에 한정되지 않는다.In the present specification, the alkenyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 2 to 40. According to an exemplary embodiment, the alkenyl group has 2 to 20 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 6 carbon atoms. Specific examples include 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- ( Naphthyl-1-yl) vinyl-1-yl, 2,2-bis (diphenyl-1-yl) vinyl-1-yl, stilbenyl group, styrenyl group and the like, but are not limited thereto.
본 명세서에 있어서, 사이클로알킬기는 특별히 한정되지 않으나, 탄소수 3 내지 60인 것이 바람직하며, 일 실시상태에 따르면, 상기 사이클로알킬기의 탄소수는 3 내지 30이다. 또 하나의 실시상태에 따르면, 상기 사이클로알킬기의 탄소수는 3 내지 20이다. 또 하나의 실시상태에 따르면, 상기 사이클로알킬기의 탄소수는 3 내지 6이다. 구체적으로 사이클로프로필, 사이클로부틸, 사이클로펜틸, 3-메틸사이클로펜틸, 2,3-디메틸사이클로펜틸, 사이클로헥실, 3-메틸사이클로헥실, 4-메틸사이클로헥실, 2,3-디메틸사이클로헥실, 3,4,5-트리메틸사이클로헥실, 4-tert-부틸사이클로헥실, 사이클로헵틸, 사이클로옥틸 등이 있으나, 이에 한정되지 않는다.In the present specification, the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to one embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 6 carbon atoms. Specifically cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3, 4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, and the like, but are not limited thereto.
본 명세서에 있어서, 아릴기는 특별히 한정되지 않으나 탄소수 6 내지 60인 것이 바람직하며, 단환식 아릴기 또는 다환식 아릴기일 수 있다. 일 실시상태에 따르면, 상기 아릴기의 탄소수는 6 내지 30이다. 일 실시상태에 따르면, 상기 아릴기의 탄소수는 6 내지 20이다. 상기 아릴기가 단환식 아릴기로는 페닐기, 바이페닐기, 터페닐기 등이 될 수 있으나, 이에 한정되는 것은 아니다. 상기 다환식 아릴기로는 나프틸기, 안트라세닐기, 페난트릴기, 파이레닐기, 페릴레닐기, 크라이세닐기, 플루오레닐기 등이 될 수 있으나, 이에 한정되는 것은 아니다.In the present specification, the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to an exemplary embodiment, the aryl group has 6 to 30 carbon atoms. According to an exemplary embodiment, the aryl group has 6 to 20 carbon atoms. The aryl group may be a phenyl group, a biphenyl group, a terphenyl group, etc. as the monocyclic aryl group, but is not limited thereto. The polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, and the like, but is not limited thereto.
본 명세서에 있어서, 플루오레닐기는 치환될 수 있고, 치환기 2개가 서로 결합하여 스피로 구조를 형성할 수 있다. 상기 플루오레닐기가 치환되는 경우, 
등이 될 수 있다. 다만, 이에 한정되는 것은 아니다.In the present specification, a fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure. When the fluorenyl group is substituted, And so on. However, the present invention is not limited thereto.
본 명세서에 있어서, 헤테로고리기는 이종 원소로 O, N, Si 및 S 중 1개 이상을 포함하는 헤테로고리기로서, 탄소수는 특별히 한정되지 않으나, 탄소수 2 내지 60인 것이 바람직하다. 헤테로고리기의 예로는 티오펜기, 퓨란기, 피롤기, 이미다졸기, 티아졸기, 옥사졸기, 옥사디아졸기, 트리아졸기, 피리딜기, 비피리딜기, 피리미딜기, 트리아진기, 아크리딜기, 피리다진기, 피라지닐기, 퀴놀리닐기, 퀴나졸린기, 퀴녹살리닐기, 프탈라지닐기, 피리도 피리미디닐기, 피리도 피라지닐기, 피라지노 피라지닐기, 이소퀴놀린기, 인돌기, 카바졸기, 벤조옥사졸기, 벤조이미다졸기, 벤조티아졸기, 벤조카바졸기, 벤조티오펜기, 디벤조티오펜기, 벤조퓨라닐기, 페난쓰롤린기(phenanthroline), 티아졸릴기, 이소옥사졸릴기, 옥사디아졸릴기, 티아디아졸릴기, 벤조티아졸릴기, 페노티아지닐기 및 디벤조퓨라닐기 등이 있으나, 이들에만 한정되는 것은 아니다.In the present specification, the heterocyclic group is a heterocyclic group containing one or more of O, N, Si, and S as a dissimilar element, and the carbon number is not particularly limited, but is preferably 2 to 60 carbon atoms. Examples of the heterocyclic group include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, pyrimidyl group, triazine group, acridil group , Pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyrido pyrimidinyl group, pyrido pyrazinyl group, pyrazino pyrazinyl group, isoquinoline group, indole group , Carbazole group, benzoxazole group, benzoimidazole group, benzothiazole group, benzocarbazole group, benzothiophene group, dibenzothiophene group, benzofuranyl group, phenanthroline group, thiazolyl group, isoxazolyl Groups, oxadiazolyl groups, thiadiazolyl groups, benzothiazolyl groups, phenothiazinyl groups, dibenzofuranyl groups, and the like, but are not limited thereto.
본 명세서에 있어서, 아르알킬기, 아르알케닐기, 알킬아릴기, 아릴아민기 중의 아릴기는 전술한 아릴기의 예시와 같다. 본 명세서에 있어서, 아르알킬기, 알킬아릴기, 알킬아민기 중 알킬기는 전술한 알킬기의 예시와 같다. 본 명세서에 있어서, 헤테로아릴아민 중 헤테로아릴은 전술한 헤테로고리기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 아르알케닐기 중 알케닐기는 전술한 알케닐기의 예시와 같다. 본 명세서에 있어서, 아릴렌은 2가기인 것을 제외하고는 전술한 아릴기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 헤테로아릴렌은 2가기인 것을 제외하고는 전술한 헤테로고리기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 탄화수소 고리는 1가기가 아니고, 2개의 치환기가 결합하여 형성한 것을 제외하고는 전술한 아릴기 또는 사이클로알킬기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 헤테로고리는 1가기가 아니고, 2개의 치환기가 결합하여 형성한 것을 제외하고는 전술한 헤테로고리기에 관한 설명이 적용될 수 있다.In the present specification, the aryl group in the aralkyl group, aralkenyl group, alkylaryl group, and arylamine group is the same as the example of the aryl group described above. In the present specification, the alkyl group among the aralkyl group, the alkylaryl group, and the alkylamine group is the same as the example of the alkyl group described above. In the present specification, the heteroaryl of the heteroarylamine may be applied to the description of the aforementioned heterocyclic group. In the present specification, the alkenyl group in the aralkenyl group is the same as the example of the alkenyl group described above. In the present specification, except that the arylene is a divalent group, the description of the aryl group described above may be applied. In the present specification, the description of the aforementioned heterocyclic group may be applied except that the heteroarylene is a divalent group. In the present specification, the hydrocarbon ring is not a monovalent group, and the description of the aforementioned aryl group or cycloalkyl group may be applied except that two substituents are formed by bonding. In the present specification, the heterocyclic group is not a monovalent group, and the description of the aforementioned heterocyclic group may be applied except that two substituents are formed by bonding.
바람직하게는, 상기 화학식 1로 표시되는 화합물은, 하기 화학식 3 내지 8로 표시되는 화합물로 이루어진 군으로부터 선택되는 어느 하나이다:Preferably, the compound represented by Chemical Formula 1 is any one selected from the group consisting of compounds represented by the following Chemical Formulas 3 to 8:
[화학식 3][Formula 3]
[화학식 4][Formula 4]
[화학식 5][Formula 5]
[화학식 6][Formula 6]
[화학식 7][Formula 7]
[화학식 8][Formula 8]
상기 화학식 3 내지 8에서, L, Ar, Y, R1, R2, R3, a1, a2, a3는 앞서 정의한 바와 같다.In Formulas 3 to 8, L, Ar, Y, R 1 , R 2 , R 3 , a1, a2, and a3 are as defined above.
바람직하게는, 화학식 1에서, L은 직접 결합; 페닐렌; 비페닐릴렌; 터페닐릴렌; 쿼터페닐릴렌; 나프틸렌; 페난트레닐렌; 트리페닐레닐렌; 크리세닐렌; 플루오란테닐렌; 피레닐렌; 또는 트라이페닐레닐렌이다.Preferably, in formula 1, L is a direct bond; Phenylene; Biphenylylene; Terphenylylene; Quarterphenylylene; Naphthylene; Phenanthrenylene; Triphenylenylene; Chrysylene; Fluoranthhenylene; Pyrenylene; Or triphenylenylene.
보다 바람직하게는, L은 직접 결합; 페닐렌; 비페닐릴렌; 또는 나프틸렌이고, 더욱 바람직하게는, L은 직접 결합; 또는 페닐렌이다.More preferably, L is a direct bond; Phenylene; Biphenylylene; Or naphthylene, more preferably L is a direct bond; Or phenylene.
바람직하게는, 화학식 1에서, Ar은 페닐; 비페닐릴; 터페닐릴; 쿼터페닐릴; 나프틸; 페난트레닐; 트리페닐레닐; 크리세닐; 플루오란테닐; 피레닐; 또는 트라이페닐레닐이다.Preferably, in formula 1, Ar is phenyl; Biphenylyl; Terphenylyl; Quarterphenylyl; Naphthyl; Phenanthrenyl; Triphenylenyl; Chrysenyl; Fluoranthenyl; Pyrenyl; Or triphenylenyl.
보다 바람직하게는, Ar은 페닐; 비페닐릴; 또는 터페닐릴이고, 더욱 바람직하게는 Ar은 페닐이다.More preferably, Ar is phenyl; Biphenylyl; Or terphenylyl, more preferably Ar is phenyl.
바람직하게는, 화학식 1에서, R1 및 R2는 각각 독립적으로, 수소이다.Preferably, in Formula 1, R 1 and R 2 are each independently hydrogen.
바람직하게는, 화학식 2에서, a1 및 a2는 0 내지 2의 정수이고, 더욱 바람직하게는 0 또는 1이다.Preferably, in formula (2), a1 and a2 are integers of 0 to 2, more preferably 0 or 1.
바람직하게는, 화학식 2에서, R4 및 R5은 각각 독립적으로, 메틸이다.Preferably, in formula (2), R 4 and R 5 are each independently methyl.
바람직하게는, 화학식 2에서, R6는 페닐이다.Preferably, in formula (2), R 6 is phenyl.
바람직하게는, 화학식 2에서, R3는 수소이다.Preferably, in formula (2), R 3 is hydrogen.
바람직하게는, 화학식 2에서, a3는 0 내지 2의 정수이고, 더욱 바람직하게는 0 또는 1이다.Preferably, in formula (2), a3 is an integer of 0 to 2, more preferably 0 or 1.
바람직하게는, 상기 화학식 1로 표시되는 화합물은, 하기로 구성되는 군으로부터 선택되는 어느 하나이다:Preferably, the compound represented by Formula 1 is any one selected from the group consisting of:
본 발명에 따른 화학식 1로 표시되는 화합물은 벤조옥사졸과 카바졸기 사이에 결합이 형성됨으로서 전자 안정성이 증가되고, 동시에 축합된 카바졸기와의 상호 작용으로 이러한 효과가 더욱 증대될 수 있다. 이에 따라 유기 발광 소자에 적용시 고효율, 저 구동 전압, 고휘도 및 장수명 등을 구현한다.In the compound represented by Formula 1 according to the present invention, an electron stability is increased by forming a bond between benzoxazole and a carbazole group, and at the same time, the effect may be further enhanced by interaction with the condensed carbazole group. Accordingly, when applied to the organic light emitting device, high efficiency, low driving voltage, high brightness and long life are realized.
상기 화학식 1로 표시되는 화합물은 하기 반응식 1-1 내지 1-2을 거쳐 제조할 수 있다.The compound represented by Chemical Formula 1 may be prepared through the following Schemes 1-1 to 1-2.
[반응식 1-1]Scheme 1-1
[반응식 1-2]Scheme 1-2
상기 반응식 1-1 내지 1-2에서, X를 제외한 나머지 변수는 앞서 정의한 바와 같고, X는 할로겐, 바람직하게는 브로모 또는 클로로이다. 상기 반응식 1-1은 아민 치환 반응이며 팔라듐 촉매와 염기 존재하에 반응시켜, 상기 Sub Compound를 제조하는 반응이다. 상기 반응식 1-2는 스즈키 커플링 반응으로서, 반응물을 팔라듐 촉매와 염기 존재하에 반응시켜, 본원발명의 화학식 1로 표시되는 화합물을 제조하는 반응이다. 상기 제조 방법은 후술할 제조예에서 보다 구체화될 수 있다.In Schemes 1-1 to 1-2, the remaining variables except X are as defined above, and X is halogen, preferably bromo or chloro. Scheme 1-1 is an amine substitution reaction and a reaction for producing the Sub Compound by reacting a palladium catalyst in the presence of a base. Scheme 1-2 is a Suzuki coupling reaction, in which a reactant is reacted with a palladium catalyst in the presence of a base to prepare a compound represented by Chemical Formula 1 of the present invention. The manufacturing method may be more specific in the production examples to be described later.
상기 화학식 1로 표시되는 화합물 및 이를 포함하는 유기 발광 소자의 제조를 이하 실시예에서 구체적으로 설명한다. 그러나 하기 실시예는 본 발명을 예시하기 위한 것이며, 본 발명의 범위가 이들에 의하여 한정되는 것은 아니다.The production of the compound represented by Chemical Formula 1 and an organic light emitting device including the same will be described in detail in the following Examples. However, the following examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.
또한, 본 발명은 상기 화학식 1로 표시되는 화합물을 포함하는 유기 발광 소자를 제공한다. 일례로, 본 발명은 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물 층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 상기 화학식 1로 표시되는 화합물을 포함하는, 유기 발광 소자를 제공한다.In another aspect, the present invention provides an organic light emitting device comprising a compound represented by the formula (1). In one embodiment, the present invention is a first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers comprises a compound represented by Chemical Formula 1. do.
본 발명의 유기 발광 소자의 유기물 층은 단층 구조로 이루어질 수도 있으나, 2층 이상의 유기물층이 적층된 다층 구조로 이루어질 수 있다. 예컨대, 본 발명의 유기 발광 소자는 유기물 층으로서 정공주입층, 정공수송층, 발광층, 전자수송층, 전자주입층 등을 포함하는 구조를 가질 수 있다. 그러나 유기 발광 소자의 구조는 이에 한정되지 않고 더 적은 수의 유기층을 포함할 수 있다.The organic material layer of the organic light emitting device of the present invention may be formed of a single layer structure, but may be formed of a multilayer structure in which two or more organic material layers are stacked. For example, the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and the like as an organic layer. However, the structure of the organic light emitting device is not limited thereto and may include a smaller number of organic layers.
또한, 상기 유기물 층은 정공주입층, 정공수송층, 또는 정공 주입과 수송을 동시에 하는 층을 포함할 수 있고, 상기 정공주입층, 정공수송층, 또는 정공 주입과 수송을 동시에 하는 층은 상기 화학식 1로 표시되는 화합물을 포함한다.The organic layer may include a hole injection layer, a hole transport layer, or a layer for simultaneously injecting and transporting holes, and the hole injection layer, a hole transport layer, or a layer for simultaneously injecting and transporting a hole may be represented by Formula 1 above. It includes the compound represented.
또한, 상기 유기물 층은 발광층을 포함할 수 있고, 상기 발광층은 상기 화학식 1로 표시되는 화합물을 포함한다.In addition, the organic layer may include a light emitting layer, and the light emitting layer includes a compound represented by Chemical Formula 1.
또한, 상기 유기물 층은 전자수송층, 또는 전자주입층을 포함할 수 있고, 상기 전자수송층, 또는 전자주입층은 상기 화학식 1로 표시되는 화합물을 포함한다.In addition, the organic layer may include an electron transport layer, or an electron injection layer, the electron transport layer, or the electron injection layer comprises a compound represented by the formula (1).
또한, 상기 전자수송층, 전자주입층, 또는 전자 주입 및 전자 수송을 동시에 하는 층은 상기 화학식 1로 표시되는 화합물을 포함한다. 특히, 본 발명에 따른 화학식 1로 표시되는 화합물은 열적 안정성이 우수하고, 6.0 eV 이상의 깊은 HOMO 준위, 높은 삼중함 에너지(ET), 및 정공 안정성을 가지고 있다. 또한, 상기 화학식 1로 표시되는 화합물을 전자 주입 및 전자 수송을 동시에 할 수 있는 유기물 층에 사용할 경우, 당업계에서 사용하는 n-형 도펀트를 혼합하여 사용할 수 있다.In addition, the electron transport layer, the electron injection layer, or a layer for simultaneously injecting and transporting electrons includes a compound represented by the formula (1). In particular, the compound represented by Formula 1 according to the present invention has excellent thermal stability, has a deep HOMO level of 6.0 eV or higher, high triplet energy (ET), and hole stability. In addition, when the compound represented by Chemical Formula 1 is used in an organic material layer capable of simultaneously injecting and transporting electrons, an n-type dopant used in the art may be mixed and used.
또한, 상기 유기물 층은 발광층 및 전자수송층을 포함하고, 상기 전자수송층은 상기 화학식 1로 표시되는 화합물을 포함할 수 있다.In addition, the organic layer may include a light emitting layer and an electron transport layer, the electron transport layer may include a compound represented by the formula (1).
또한, 본 발명에 따른 유기 발광 소자는, 기판 상에 양극, 1층 이상의 유기물 층 및 음극이 순차적으로 적층된 구조(normal type)의 유기 발광 소자일 수 있다. 또한, 본 발명에 따른 유기 발광 소자는 기판 상에 음극, 1층 이상의 유기물 층 및 양극이 순차적으로 적층된 역방향 구조(inverted type)의 유기 발광 소자일 수 있다. 예컨대, 본 발명의 일실시예에 따른 유기 발광 소자의 구조는 도 1 및 2에 예시되어 있다.In addition, the organic light emitting device according to the present invention may be an organic light emitting device having a structure in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate. In addition, the organic light emitting diode according to the present invention may be an organic light emitting diode having an inverted type structure in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate. For example, the structure of an organic light emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 and 2.
도 1은 기판(1), 양극(2), 발광층(3), 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다. 이와 같은 구조에 있어서, 상기 화학식 1로 표시되는 화합물은 상기 발광층에 포함될 수 있다.FIG. 1 shows an example of an organic light emitting element composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4. In such a structure, the compound represented by Formula 1 may be included in the light emitting layer.
도 2는 기판 (1), 양극(2), 정공주입층(5), 정공수송층(6), 발광층(7), 전자수송층(8) 및 음극(4)로 이루어진 유기 발광 소자의 예를 도시한 것이다. 이와 같은 구조에 있어서, 상기 화학식 1로 표시되는 화합물은 상기 정공주입층, 정공수송층, 발광층 및 전자수송층 중 1층 이상에 포함될 수 있다.2 shows an example of an organic light emitting element consisting of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light emitting layer 7, an electron transport layer 8 and a cathode 4. It is. In such a structure, the compound represented by Formula 1 may be included in one or more layers of the hole injection layer, the hole transport layer, the light emitting layer and the electron transport layer.
본 발명에 따른 유기 발광 소자는, 상기 유기물 층 중 1층 이상이 상기 화학식 1로 표시되는 화합물을 포함하는 것을 제외하고는 당 기술분야에 알려져 있는 재료와 방법으로 제조될 수 있다. 또한, 상기 유기 발광 소자가 복수개의 유기물층을 포함하는 경우, 상기 유기물층은 동일한 물질 또는 다른 물질로 형성될 수 있다.The organic light emitting device according to the present invention may be manufactured by materials and methods known in the art, except that at least one layer of the organic material layer includes the compound represented by Chemical Formula 1. In addition, when the organic light emitting device includes a plurality of organic material layers, the organic material layers may be formed of the same material or different materials.
예컨대, 본 발명에 따른 유기 발광 소자는 기판 상에 제1 전극, 유기물층 및 제2 전극을 순차적으로 적층시켜 제조할 수 있다. 이때, 스퍼터링법(sputtering)이나 전자빔 증발법(e-beam evaporation)과 같은 PVD(physical Vapor Deposition)방법을 이용하여, 기판 상에 금속 또는 전도성을 가지는 금속 산화물 또는 이들의 합금을 증착시켜 양극을 형성하고, 그 위에 정공 주입층, 정공 수송층, 발광층 및 전자 수송층을 포함하는 유기물 층을 형성한 후, 그 위에 음극으로 사용할 수 있는 물질을 증착시켜 제조할 수 있다. 이와 같은 방법 외에도, 기판 상에 음극 물질부터 유기물층, 양극 물질을 차례로 증착시켜 유기 발광 소자를 만들 수 있다.For example, the organic light emitting device according to the present invention may be manufactured by sequentially stacking a first electrode, an organic material layer, and a second electrode on a substrate. At this time, by using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation, a metal or conductive metal oxide or an alloy thereof is deposited on the substrate to form an anode. In addition, an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer may be formed thereon, and then a material that may be used as a cathode may be deposited thereon. In addition to the above method, an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
또한, 상기 화학식 1로 표시되는 화합물은 유기 발광 소자의 제조시 진공 증착법 뿐만 아니라 용액 도포법에 의하여 유기물 층으로 형성될 수 있다. 여기서, 용액 도포법이라 함은 스핀 코팅, 딥코팅, 닥터 블레이딩, 잉크젯 프린팅, 스크린 프린팅, 스프레이법, 롤 코팅 등을 의미하지만, 이들만으로 한정되는 것은 아니다.In addition, the compound represented by Chemical Formula 1 may be formed as an organic layer by a solution coating method as well as a vacuum deposition method in the manufacture of the organic light emitting device. Here, the solution coating method means spin coating, dip coating, doctor blading, inkjet printing, screen printing, spray method, roll coating, etc., but is not limited thereto.
이와 같은 방법 외에도, 기판 상에 음극 물질로부터 유기물층, 양극 물질을 차례로 증착시켜 유기 발광 소자를 제조할 수 있다(WO 2003/012890). 다만, 제조 방법이 이에 한정되는 것은 아니다. In addition to the above method, an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material on a substrate from a cathode material (WO 2003/012890). However, the manufacturing method is not limited thereto.
일례로, 상기 제1 전극은 양극이고, 상기 제2 전극은 음극이거나, 또는 상기 제1 전극은 음극이고, 상기 제2 전극은 양극이다.In one example, the first electrode is an anode, the second electrode is a cathode, or the first electrode is a cathode, the second electrode is an anode.
상기 양극 물질로는 통상 유기물 층으로 정공 주입이 원활할 수 있도록 일함수가 큰 물질이 바람직하다. 상기 양극 물질의 구체적인 예로는 바나듐, 크롬, 구리, 아연, 금과 같은 금속 또는 이들의 합금; 아연 산화물, 인듐 산화물, 인듐주석 산화물(ITO), 인듐아연 산화물(IZO)과 같은 금속 산화물; ZnO:Al 또는 SNO2:Sb와 같은 금속과 산화물의 조합; 폴리(3-메틸티오펜), 폴리[3,4-(에틸렌-1,2-디옥시)티오펜](PEDOT), 폴리피롤 및 폴리아닐린과 같은 전도성 고분자 등이 있으나, 이들에만 한정되는 것은 아니다.As the anode material, a material having a large work function is usually preferred to facilitate hole injection into the organic material layer. Specific examples of the positive electrode material include metals such as vanadium, chromium, copper, zinc and gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); Combinations of oxides with metals 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, and the like, but are not limited thereto.
상기 음극 물질로는 통상 유기물층으로 전자 주입이 용이하도록 일함수가 작은 물질인 것이 바람직하다. 상기 음극 물질의 구체적인 예로는 마그네슘, 칼슘, 나트륨, 칼륨, 티타늄, 인듐, 이트륨, 리튬, 가돌리늄, 알루미늄, 은, 주석 및 납과 같은 금속 또는 이들의 합금; LiF/Al 또는 LiO2/Al과 같은 다층 구조 물질 등이 있으나, 이들에만 한정되는 것은 아니다.It is preferable that the cathode material is a material having a small work function to facilitate electron injection into the organic material layer. Specific examples of the negative electrode material 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 LiO 2 / Al, and the like, but are not limited thereto.
상기 정공주입층은 전극으로부터 정공을 주입하는 층으로, 정공 주입 물질로는 정공을 수송하는 능력을 가져 양극에서의 정공 주입효과, 발광층 또는 발광재료에 대하여 우수한 정공 주입 효과를 갖고, 발광층에서 생성된 여기자의 전자주입층 또는 전자주입재료에의 이동을 방지하며, 또한, 박막 형성 능력이 우수한 화합물이 바람직하다. 정공 주입 물질의 HOMO(highest occupied molecular orbital)가 양극 물질의 일함수와 주변 유기물 층의 HOMO 사이인 것이 바람직하다. 정공 주입 물질의 구체적인 예로는 금속 포피린(porphyrin), 올리고티오펜, 아릴아민 계열의 유기물, 헥사니트릴헥사아자트리페닐렌 계열의 유기물, 퀴나크리돈(quinacridone)계열의 유기물, 페릴렌(perylene) 계열의 유기물, 안트라퀴논 및 폴리아닐린과 폴리티오펜 계열의 전도성 고분자 등이 있으나, 이들에만 한정 되는 것은 아니다.The hole injection layer is a layer for injecting holes from the electrode, and has a capability of transporting holes to the hole injection material, and has a hole injection effect at the anode, an excellent hole injection effect to the light emitting layer or the light emitting material, and is produced in the light emitting layer The compound which prevents the excitons from moving to the electron injection layer or the electron injection material, and is excellent in thin film formation ability is preferable. Preferably, the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic layer. Specific examples of the hole injection material include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene-based Organic materials, anthraquinone and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.
상기 정공수송층은 정공주입층으로부터 정공을 수취하여 발광층까지 정공을 수송하는 층으로, 정공 수송 물질로 양극이나 정공 주입층으로부터 정공을 수송받아 발광층으로 옮겨줄 수 있는 물질로 정공에 대한 이동성이 큰 물질이 적합하다. 구체적인 예로는 아릴아민 계열의 유기물, 전도성 고분자, 및 공액 부분과 비공액 부분이 함께 있는 블록 공중합체 등이 있으나, 이들에만 한정되는 것은 아니다.The hole transport layer is a layer for receiving holes from the hole injection layer and transporting holes to the light emitting layer. A hole transporting material is a material capable of transporting holes from an anode or a hole injection layer and transferring them to the light emitting layer. This is suitable. Specific examples thereof include an arylamine-based organic material, a conductive polymer, and a block copolymer having a conjugated portion and a non-conjugated portion together, but are not limited thereto.
상기 발광 물질로는 정공 수송층과 전자 수송층으로부터 정공과 전자를 각각 수송받아 결합시킴으로써 가시광선 영역의 빛을 낼 수 있는 물질로서, 형광이나 인광에 대한 양자 효율이 좋은 물질이 바람직하다. 구체적인 예로 8-히드록시-퀴놀린 알루미늄 착물(Alq3); 카르바졸 계열 화합물; 이량체화 스티릴(dimerized styryl) 화합물; BAlq; 10-히드록시벤조 퀴놀린-금속 화합물; 벤족사졸, 벤즈티아졸 및 벤즈이미다졸 계열의 화합물; 폴리(p-페닐렌비닐렌)(PPV) 계열의 고분자; 스피로(spiro) 화합물; 폴리플루오렌, 루브렌 등이 있으나, 이들에만 한정되는 것은 아니다. The light emitting material is a material capable of emitting light in the visible region by receiving and combining holes and electrons from the hole transporting layer and the electron transporting layer, respectively, and a material having good quantum efficiency with respect to fluorescence or phosphorescence is preferable. Specific examples thereof include 8-hydroxyquinoline aluminum complex (Alq 3 ); Carbazole series compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzo quinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole series compounds; Poly (p-phenylenevinylene) (PPV) -based polymers; Spiro compounds; Polyfluorene, rubrene and the like, but are not limited thereto.
상기 발광층은 호스트 재료 및 도펀트 재료를 포함할 수 있다. 호스트 재료는 축합 방향족환 유도체 또는 헤테로환 함유 화합물 등이 있다. 구체적으로 축합 방향족환 유도체로는 안트라센 유도체, 피렌 유도체, 나프탈렌 유도체, 펜타센 유도체, 페난트렌 화합물, 플루오란텐 화합물 등이 있고, 헤테로환 함유 화합물로는 카바졸 유도체, 디벤조퓨란 유도체, 래더형 퓨란 화합물, 피리미딘 유도체 등이 있으나, 이에 한정되지 않는다.The light emitting layer may include a host material and a dopant material. The host material may be a condensed aromatic ring derivative or a hetero ring-containing compound. Specifically, the condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds, and heterocyclic containing compounds include carbazole derivatives, dibenzofuran derivatives and ladder types. Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.
도펀트 재료로는 방향족 아민 유도체, 스트릴아민 화합물, 붕소 착체, 플루오란텐 화합물, 금속 착체 등이 있다. 구체적으로 방향족 아민 유도체로는 치환 또는 비치환된 아릴아미노기를 갖는 축합 방향족환 유도체로서, 아릴아미노기를 갖는 피렌, 안트라센, 크리센, 페리플란텐 등이 있으며, 스티릴아민 화합물로는 치환 또는 비치환된 아릴아민에 적어도 1개의 아릴비닐기가 치환되어 있는 화합물로, 아릴기, 실릴기, 알킬기, 사이클로알킬기 및 아릴아미노기로 이루어진 군에서 1 또는 2 이상 선택되는 치환기가 치환 또는 비치환된다. 구체적으로 스티릴아민, 스티릴디아민, 스티릴트리아민, 스티릴테트라아민 등이 있으나, 이에 한정되지 않는다. 또한, 금속 착체로는 이리듐 착체, 백금 착체 등이 있으나, 이에 한정되지 않는다.Dopant materials include aromatic amine derivatives, styrylamine compounds, boron complexes, fluoranthene compounds, metal complexes, and the like. Specifically, the aromatic amine derivatives include condensed aromatic ring derivatives having a substituted or unsubstituted arylamino group, and include pyrene, anthracene, chrysene and periplanthene having an arylamino group, and styrylamine compounds may be substituted or unsubstituted. At least one arylvinyl group is substituted with the above-described arylamine, and one or two or more substituents selected from the group consisting of aryl group, silyl group, alkyl group, cycloalkyl group and arylamino group are substituted or unsubstituted. Specifically, styrylamine, styryldiamine, styryltriamine, styryltetraamine and the like, but is not limited thereto. In addition, the metal complex includes, but is not limited to, an iridium complex, a platinum complex, and the like.
상기 전자수송층은 전자주입층으로부터 전자를 수취하여 발광층까지 전자를 수송하는 층으로 전자 수송 물질로는 음극으로부터 전자를 잘 주입 받아 발광층으로 옮겨줄 수 있는 물질로서, 전자에 대한 이동성이 큰 물질이 적합하다. 구체적인 예로는 8-히드록시퀴놀린의 Al 착물; Alq3를 포함한 착물; 유기 라디칼 화합물; 히드록시플라본-금속 착물 등이 있으나, 이들에만 한정되는 것은 아니다. 전자 수송층은 종래기술에 따라 사용된 바와 같이 임의의 원하는 캐소드 물질과 함께 사용할 수 있다. 특히, 적절한 캐소드 물질의 예는 낮은 일함수를 가지고 알루미늄층 또는 실버층이 뒤따르는 통상적인 물질이다. 구체적으로 세슘, 바륨, 칼슘, 이테르븀 및 사마륨이고, 각 경우 알루미늄 층 또는 실버층이 뒤따른다.The electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light emitting layer. As the electron transporting material, a material capable of injecting electrons well from the cathode and transferring them to the light emitting layer is suitable. Do. Specific examples include Al complexes of 8-hydroxyquinoline; Complexes including Alq 3 ; Organic radical compounds; Hydroxyflavone-metal complexes and the like, but are not limited thereto. The electron transport layer can be used with any desired cathode material as used in the prior art. In particular, examples of suitable cathode materials are conventional materials having a low work function followed by an aluminum or silver layer. Specifically cesium, barium, calcium, ytterbium and samarium, followed by aluminum layers or silver layers in each case.
상기 전자 주입층은 전극으로부터 전자를 주입하는 층으로, 전자를 수송하는 능력을 갖고, 음극으로부터의 전자 주입 효과, 발광층 또는 발광 재료에 대하여 우수한 전자주입 효과를 가지며, 발광층에서 생성된 여기자의 정공주입층에의 이동을 방지하고, 또한, 박막형성능력이 우수한 화합물이 바람직하다. 구체적으로는 플루오레논, 안트라퀴노다이메탄, 다이페노퀴논, 티오피란 다이옥사이드, 옥사졸, 옥사다이아졸, 트리아졸, 이미다졸, 페릴렌테트라카복실산, 프레오레닐리덴 메탄, 안트론 등과 그들의 유도체, 금속 착체 화합물 및 질소 함유 5원환 유도체 등이 있으나, 이에 한정되지 않는다.The electron injection layer is a layer for injecting electrons from the electrode, has the ability to transport electrons, has an electron injection effect from the cathode, excellent electron injection effect to the light emitting layer or the light emitting material, and hole injection of excitons generated in the light emitting layer The compound which prevents the movement to a layer and is excellent in thin film formation ability is preferable. Specifically, fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone and the derivatives thereof, metal Complex compounds, nitrogen-containing five-membered ring derivatives, and the like, but are not limited thereto.
상기 금속 착체 화합물로서는 8-하이드록시퀴놀리나토 리튬, 비스(8-하이드록시퀴놀리나토)아연, 비스(8-하이드록시퀴놀리나토)구리, 비스(8-하이드록시퀴놀리나토)망간, 트리스(8-하이드록시퀴놀리나토)알루미늄, 트리스(2-메틸-8-하이드록시퀴놀리나토)알루미늄, 트리스(8-하이드록시퀴놀리나토)갈륨, 비스(10-하이드록시벤조[h]퀴놀리나토)베릴륨, 비스(10-하이드록시벤조[h]퀴놀리나토)아연, 비스(2-메틸-8-퀴놀리나토)클로로갈륨, 비스(2-메틸-8-퀴놀리나토)(o-크레졸라토)갈륨, 비스(2-메틸-8-퀴놀리나토)(1-나프톨라토)알루미늄, 비스(2-메틸-8-퀴놀리나토)(2-나프톨라토)갈륨 등이 있으나, 이에 한정되지 않는다.Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis (8-hydroxyquinolinato) zinc, bis (8-hydroxyquinolinato) copper, bis (8-hydroxyquinolinato) manganese, Tris (8-hydroxyquinolinato) aluminum, tris (2-methyl-8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinolinato) gallium, bis (10-hydroxybenzo [h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( o-cresolato) gallium, bis (2-methyl-8-quinolinato) (1-naphtholato) aluminum, bis (2-methyl-8-quinolinato) (2-naphtolato) gallium, It is not limited to this.
본 발명에 따른 유기 발광 소자는 사용되는 재료에 따라 전면 발광형, 후면 발광형 또는 양면 발광형일 수 있다.The organic light emitting device according to the present invention may be a top emission type, a bottom emission type or a double-sided emission type according to the material used.
또한, 상기 화학식 1로 표시되는 화합물은 유기 발광 소자 외에도 유기 태양 전지 또는 유기 트랜지스터에 포함될 수 있다.In addition, the compound represented by Formula 1 may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
상기 화학식 1로 표시되는 화합물 및 이를 포함하는 유기 발광 소자의 제조를 이하 실시예에서 구체적으로 설명한다. 그러나 하기 실시예는 본 발명을 예시하기 위한 것이며, 본 발명의 범위가 이들에 의하여 한정되는 것은 아니다.The production of the compound represented by Chemical Formula 1 and an organic light emitting device including the same will be described in detail in the following Examples. However, the following examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.
[제조예][Production example]
제조예 1: 중간체 화합물 sub 1-1 내지 sub 1-2의 제조Preparation Example 1 Preparation of Intermediate Compounds sub 1-1 to sub 1-2
화합물 sub 1-1의 제조Preparation of Compound sub 1-1
질소 분위기에서 화합물 3-chloro-9H-carbazole (30.0 g, 149.2 mmol)과 2-chlorobenzo[d]oxazole (22.9 g, 149.2 mmol)을 자일렌 300mL에 투입하여 녹이고, 나트륨 터셔리-부톡사이드 (21.5g, 228.9 mmol)를 첨가하여 가온한다. 비스(트리 터셔리-부틸포스핀)팔라듐(2.4g, 3mol%)을 투입하여 12시간 환류 교반 시킨다. 반응이 완결되면 상온으로 온도를 낮춘 후 생성된 고체를 여과하였다. 고체를 클로로포름 700mL에 녹이고, 물로 2회 세척 후에 유기층을 분리하여, 무수황산마그네슘을 넣고 교반한 후 여과하여 여액을 감압 증류하였다. 농축한 화합물을 클로로포름과 에틸아세테이트을 이용하여 실리카 컬럼을 통해 정제하여 흰색의 고체 화합물 sub 1-1(30.4 g, 61%)을 제조하였다.In a nitrogen atmosphere, 3-chloro-9H-carbazole (30.0 g, 149.2 mmol) and 2-chlorobenzo [d] oxazole (22.9 g, 149.2 mmol) were added to 300 mL of xylene, and dissolved with sodium tertiary-butoxide (21.5). g, 228.9 mmol) is added to warm. Bis (tri tertary-butylphosphine) palladium (2.4g, 3mol%) was added thereto, and the mixture was stirred under reflux for 12 hours. After the reaction was completed, the temperature was lowered to room temperature, and the produced solid was filtered. The solid was dissolved in 700 mL of chloroform, washed twice with water, and then the organic layer was separated, anhydrous magnesium sulfate was added thereto, stirred, and filtered. The filtrate was distilled under reduced pressure. The concentrated compound was purified through a silica column using chloroform and ethyl acetate to prepare a white solid compound sub 1-1 (30.4 g, 61%).
MS: [M+H]+ = 335MS: [M + H] < + > = 335
2) 화합물 sub 1-2의 제조2) Preparation of Compound sub 1-2
질소 분위기에서 화합물 sub 1-1(30.4 g, 90.8 mmol), 비스(피나콜라토)다이보론(26.1g, 99.8mmol) 및 아세트산칼륨(17.8 g, 181.5 mmol)을 섞고, 디옥산 300 ml에 첨가하고 교반하면서 가열하였다. 환류되는 상태에서 비스(디벤질리딘아세톤)팔라듐(1.5 g, 3 mol%)과 트리사이클로헥실포스핀(1.5 g, 6 mol%)을 넣고 5시간 동안 가열, 교반하였다. 반응 종료 후, 상온으로 온도를 낮춘 후 여과하였다. 여과액에 물을 붓고 클로로포름으로 추출하고, 유기층을 무수황산마그네슘으로 건조하였다. 감압 증류 후 에탄올로 재결정하여 화합물 sub 1-2 (29.8g, 77%)를 제조하였다In a nitrogen atmosphere, compound sub 1-1 (30.4 g, 90.8 mmol), bis (pinacolato) diboron (26.1 g, 99.8 mmol) and potassium acetate (17.8 g, 181.5 mmol) are mixed and added to 300 ml of dioxane And heated with stirring. At reflux, bis (dibenzylideneacetone) palladium (1.5 g, 3 mol%) and tricyclohexylphosphine (1.5 g, 6 mol%) were added thereto, and the mixture was heated and stirred for 5 hours. After completion of the reaction, the temperature was lowered to room temperature and filtered. Water was added to the filtrate, and the mixture was extracted with chloroform, and the organic layer was dried over anhydrous magnesium sulfate. Distillation under reduced pressure and recrystallization with ethanol to give compound sub 1-2 (29.8g, 77%).
MS: [M+H]+ = 427MS: [M + H] < + > = 427
제조예 2: 중간체 화합물 sub 2-1 내지 sub 2-2의 제조Preparation Example 2 Preparation of Intermediate Compounds sub 2-1 to sub 2-2
1) 화합물 sub 2-1의 제조1) Preparation of Compound sub 2-1
질소 분위기에서 화합물 3-chloro-9H-carbazole (30.0 g, 149.2 mmol)과 2-(4-bromophenyl)benzo[d]oxazole (40.8 g, 149.2 mmol)을 자일렌 300mL에 투입하여 녹이고, 나트륨 터셔리-부톡사이드 (21.5g, 228.9 mmol)를 첨가하여 가온한다. 비스(트리 터셔리-부틸포스핀)팔라듐(2.4g, 3mol%)을 투입하여 12시간 환류 교반 시킨다. 반응이 완결되면 상온으로 온도를 낮춘 후 생성된 고체를 여과하였다. 고체를 클로로포름 700mL에 녹이고, 물로 2회 세척 후에 유기층을 분리하여, 무수황산마그네슘을 넣고 교반한 후 여과하여 여액을 감압 증류하였다. 농축한 화합물을 클로로포름과 에틸아세테이트을 이용하여 실리카 컬럼을 통해 정제하여 흰색의 고체 화합물 sub 2-1(36.1 g, 59%)을 제조하였다.In a nitrogen atmosphere, 3-chloro-9H-carbazole (30.0 g, 149.2 mmol) and 2- (4-bromophenyl) benzo [d] oxazole (40.8 g, 149.2 mmol) were added to 300 mL of xylene to dissolve it. Warm by addition of butoxide (21.5 g, 228.9 mmol). Bis (tri tertary-butylphosphine) palladium (2.4g, 3mol%) was added thereto, and the mixture was stirred under reflux for 12 hours. After the reaction was completed, the temperature was lowered to room temperature, and the produced solid was filtered. The solid was dissolved in 700 mL of chloroform, washed twice with water, and then the organic layer was separated, anhydrous magnesium sulfate was added thereto, stirred, and filtered. The filtrate was distilled under reduced pressure. The concentrated compound was purified through a silica column using chloroform and ethyl acetate to prepare a white solid compound sub 2-1 (36.1 g, 59%).
MS: [M+H]+ = 411MS: [M + H] < + > = 411
2) 화합물 sub 2-2의 제조2) Preparation of Compound sub 2-2
질소 분위기에서 화합물 sub 2-1(36.1 g, 88.1 mmol), 비스(피나콜라토)다이보론(24.9g, 96.9mmol) 및 아세트산칼륨(17.3 g, 176.1 mmol)을 섞고, 디옥산 300 ml에 첨가하고 교반하면서 가열하였다. 환류되는 상태에서 비스(디벤질리딘아세톤)팔라듐(1.5 g, 3 mol%)과 트리사이클로헥실포스핀(1.5 g, 6 mol%)을 넣고 5시간 동안 가열, 교반하였다. 반응 종료 후, 상온으로 온도를 낮춘 후 여과하였다. 여과액에 물을 붓고 클로로포름으로 추출하고, 유기층을 무수황산마그네슘으로 건조하였다. 감압 증류 후 에탄올로 재결정하여 화합물 sub 2-2 (29.2g, 66%)를 제조하였다In a nitrogen atmosphere, compound sub 2-1 (36.1 g, 88.1 mmol), bis (pinacolato) diboron (24.9g, 96.9mmol) and potassium acetate (17.3 g, 176.1 mmol) are mixed and added to 300 ml of dioxane And heated with stirring. At reflux, bis (dibenzylideneacetone) palladium (1.5 g, 3 mol%) and tricyclohexylphosphine (1.5 g, 6 mol%) were added thereto, and the mixture was heated and stirred for 5 hours. After completion of the reaction, the temperature was lowered to room temperature and filtered. Water was added to the filtrate, and the mixture was extracted with chloroform, and the organic layer was dried over anhydrous magnesium sulfate. Compound di-2 (29.2 g, 66%) was prepared by recrystallization with ethanol after distillation under reduced pressure.
MS: [M+H]+ = 503MS: [M + H] < + > = 503
제조예 3: 화합물 1 내지 6의 제조Preparation Example 3 Preparation of Compounds 1 to 6
1) 화합물 1의 제조1) Preparation of Compound 1
질소 분위기에서 화합물 sub 2-2 (20.0 g, 39.8 mmol) 2-bromo-7,7-dimethyl-5-phenyl-5,7-dihydroindeno[2,1-b]carbazole (17.4 g, 39.8 mmol)를 테트라하이드로퓨란 200 ml에 넣고 교반 및 환류하였다. 이 후 포타슘카보네이트(16.5 g, 119.5 mmol)를 물 50 ml에 녹여 투입하고 충분히 교반한 후 테트라키스트리페닐-포스피노팔라듐(1.4 g, 3 mol%)을 투입하였다. 4시간 반응 후 상온으로 온도를 낮춘 후 여과하였다. 여과물을 클로로포름에 녹인 후 물로 추출한 후 유기층을 황산마그네슘을 이용해 건조하였다. 이후 유기층을 건조한 후 에틸아세테이트 재결정을 통해 화합물 1(16.4 g, 56%)을 제조하였다.Compound 2-2 (20.0 g, 39.8 mmol) 2-bromo-7,7-dimethyl-5-phenyl-5,7-dihydroindeno [2,1-b] carbazole (17.4 g, 39.8 mmol) in a nitrogen atmosphere 200 ml of tetrahydrofuran was added and stirred and refluxed. Thereafter, potassium carbonate (16.5 g, 119.5 mmol) was dissolved in 50 ml of water, stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.4 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered. The filtrate was dissolved in chloroform, extracted with water, and the organic layer was dried over magnesium sulfate. After drying the organic layer was prepared compound 1 (16.4 g, 56%) through ethyl acetate recrystallization.
MS: [M+H]+ = 734MS: [M + H] < + > = 734
2) 화합물 2의 제조2) Preparation of Compound 2
질소 분위기에서 화합물 sub 2-2 (20.0 g, 39.8 mmol) 2-bromo-5,8-diphenyl-5,8-dihydroindolo[2,3-c]carbazole (19.4 g, 39.8 mmol)를 테트라하이드로퓨란 200 ml에 넣고 교반 및 환류하였다. 이 후 포타슘카보네이트(16.5 g, 119.5 mmol)를 물 50 ml에 녹여 투입하고 충분히 교반한 후 테트라키스트리페닐-포스피노팔라듐(1.4 g, 3 mol%)을 투입하였다. 4시간 반응 후 상온으로 온도를 낮춘 후 여과하였다. 여과물을 클로로포름에 녹인 후 물로 추출한 후 유기층을 황산마그네슘을 이용해 건조하였다. 이후 유기층을 건조한 후 에틸아세테이트 재결정을 통해 화합물 2(13.1 g, 42%)을 제조하였다.Compound 2-2 (20.0 g, 39.8 mmol) 2-bromo-5,8-diphenyl-5,8-dihydroindolo [2,3-c] carbazole (19.4 g, 39.8 mmol) in a nitrogen atmosphere with tetrahydrofuran 200 In ml it was stirred and refluxed. Thereafter, potassium carbonate (16.5 g, 119.5 mmol) was dissolved in 50 ml of water, stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.4 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered. The filtrate was dissolved in chloroform, extracted with water, and the organic layer was dried over magnesium sulfate. Thereafter, the organic layer was dried, and compound 2 (13.1 g, 42%) was prepared through ethyl acetate recrystallization.
MS: [M+H]+ = 783MS: [M + H] < + > = 783
3) 화합물 3의 제조3) Preparation of Compound 3
질소 분위기에서 화합물 sub 2-2 (20.0 g, 39.8 mmol) 11-bromo-8-phenyl-8H-benzofuro[2,3-c]carbazole (16.4 g, 39.8 mmol)를 테트라하이드로퓨란 200 ml에 넣고 교반 및 환류하였다. 이 후 포타슘카보네이트(16.5 g, 119.5 mmol)를 물 50 ml에 녹여 투입하고 충분히 교반한 후 테트라키스트리페닐-포스피노팔라듐(1.4 g, 3 mol%)을 투입하였다. 4시간 반응 후 상온으로 온도를 낮춘 후 여과하였다. 여과물을 클로로포름에 녹인 후 물로 추출한 후 유기층을 황산마그네슘을 이용해 건조하였다. 이후 유기층을 건조한 후 에틸아세테이트 재결정을 통해 화합물 3(12.4 g, 44%)을 제조하였다.In a nitrogen atmosphere, add compound sub 2-2 (20.0 g, 39.8 mmol) 11-bromo-8-phenyl-8H-benzofuro [2,3-c] carbazole (16.4 g, 39.8 mmol) to 200 ml of tetrahydrofuran and stir. And reflux. Thereafter, potassium carbonate (16.5 g, 119.5 mmol) was dissolved in 50 ml of water, stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.4 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered. The filtrate was dissolved in chloroform and extracted with water, and then the organic layer was dried over magnesium sulfate. After drying the organic layer was prepared compound 3 (12.4 g, 44%) by ethyl acetate recrystallization.
MS: [M+H]+ = 708MS: [M + H] < + > = 708
4) 화합물 4의 제조4) Preparation of Compound 4
질소 분위기에서 화합물 sub 2-2 (20.0 g, 39.8 mmol) 3-bromo-12-phenyl-12H-benzofuro[2,3-a]carbazole (16.4 g, 39.8 mmol)를 테트라하이드로퓨란 200 ml에 넣고 교반 및 환류하였다. 이 후 포타슘카보네이트(16.5 g, 119.5 mmol)를 물 50 ml에 녹여 투입하고 충분히 교반한 후 테트라키스트리페닐-포스피노팔라듐(1.4 g, 3 mol%)을 투입하였다. 4시간 반응 후 상온으로 온도를 낮춘 후 여과하였다. 여과물을 클로로포름에 녹인 후 물로 추출한 후 유기층을 황산마그네슘을 이용해 건조하였다. 이후 유기층을 건조한 후 에틸아세테이트 재결정을 통해 화합물 4(10.1 g, 36%)을 제조하였다.In a nitrogen atmosphere, add compound sub 2-2 (20.0 g, 39.8 mmol) 3-bromo-12-phenyl-12H-benzofuro [2,3-a] carbazole (16.4 g, 39.8 mmol) to 200 ml of tetrahydrofuran and stir. And reflux. Thereafter, potassium carbonate (16.5 g, 119.5 mmol) was dissolved in 50 ml of water, stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.4 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered. The filtrate was dissolved in chloroform, extracted with water, and the organic layer was dried over magnesium sulfate. After drying the organic layer was prepared compound 4 (10.1 g, 36%) by ethyl acetate recrystallization.
MS: [M+H]+ = 708MS: [M + H] < + > = 708
5) 화합물 5의 제조5) Preparation of Compound 5
질소 분위기에서 화합물 sub 2-2 (20.0 g, 39.8 mmol) 3-bromo-12-phenyl-12H-benzo[4,5]thieno[2,3-a]carbazole (17.0 g, 39.8 mmol)를 테트라하이드로퓨란 200 ml에 넣고 교반 및 환류하였다. 이 후 포타슘카보네이트(16.5 g, 119.5 mmol)를 물 50 ml에 녹여 투입하고 충분히 교반한 후 테트라키스트리페닐-포스피노팔라듐(1.4 g, 3 mol%)을 투입하였다. 4시간 반응 후 상온으로 온도를 낮춘 후 여과하였다. 여과물을 클로로포름에 녹인 후 물로 추출한 후 유기층을 황산마그네슘을 이용해 건조하였다. 이후 유기층을 건조한 후 에틸아세테이트 재결정을 통해 화합물 5(16.7 g, 58%)을 제조하였다.Tetrahydro of compound sub 2-2 (20.0 g, 39.8 mmol) 3-bromo-12-phenyl-12H-benzo [4,5] thieno [2,3-a] carbazole (17.0 g, 39.8 mmol) in a nitrogen atmosphere 200 ml of furan was added and stirred and refluxed. Thereafter, potassium carbonate (16.5 g, 119.5 mmol) was dissolved in 50 ml of water, and stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.4 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered. The filtrate was dissolved in chloroform and extracted with water, and then the organic layer was dried over magnesium sulfate. Thereafter, the organic layer was dried, and compound 5 (16.7 g, 58%) was prepared through ethyl acetate recrystallization.
MS: [M+H]+ = 724MS: [M + H] < + > = 724
6) 화합물 6의 제조6) Preparation of Compound 6
질소 분위기에서 화합물 sub 1-2 (20.0 g, 46.9 mmol) 2-bromo-7,7-dimethyl-5-phenyl-5,7-dihydroindeno[2,1-b]carbazole (20.5 g, 46.9 mmol)를 테트라하이드로퓨란 200 ml에 넣고 교반 및 환류하였다. 이 후 포타슘카보네이트(19.5 g, 140.8 mmol)를 물 60 ml에 녹여 투입하고 충분히 교반한 후 테트라키스트리페닐-포스피노팔라듐(1.6 g, 3 mol%)을 투입하였다. 4시간 반응 후 상온으로 온도를 낮춘 후 여과하였다. 여과물을 클로로포름에 녹인 후 물로 추출한 후 유기층을 황산마그네슘을 이용해 건조하였다. 이후 유기층을 건조한 후 에틸아세테이트 재결정을 통해 화합물 6(12.3 g, 40%)을 제조하였다.In a nitrogen atmosphere, compound sub 1-2 (20.0 g, 46.9 mmol) 2-bromo-7,7-dimethyl-5-phenyl-5,7-dihydroindeno [2,1-b] carbazole (20.5 g, 46.9 mmol) 200 ml of tetrahydrofuran was added and stirred and refluxed. Thereafter, potassium carbonate (19.5 g, 140.8 mmol) was dissolved in 60 ml of water, stirred sufficiently, and then tetrakistriphenyl-phosphinopalladium (1.6 g, 3 mol%) was added thereto. After 4 hours the reaction was lowered to room temperature and filtered. The filtrate was dissolved in chloroform and extracted with water, and then the organic layer was dried over magnesium sulfate. Thereafter, the organic layer was dried, and compound 6 (12.3 g, 40%) was prepared through ethyl acetate recrystallization.
MS: [M+H]+ = 658MS: [M + H] < + > = 658
[실험예]Experimental Example
<실험예 1>Experimental Example 1
ITO(indium tin oxide)가 1,300Å의 두께로 박막 코팅된 유리 기판을 세제를 녹인 증류수에 넣고 초음파로 세척하였다. 이때, 세제로는 피셔사(Fischer Co.) 제품을 사용하였으며, 증류수로는 밀리포어사(Millipore Co.) 제품의 필터(Filter)로 2차로 걸러진 증류수를 사용하였다. ITO를 30분간 세척한 후 증류수로 2회 반복하여 초음파 세척을 10분간 진행하였다. 증류수 세척이 끝난 후, 이소프로필알콜, 아세톤, 메탄올의 용제로 초음파 세척을 하고 건조시킨 후 플라즈마 세정기로 수송시켰다. 또한, 산소 플라즈마를 이용하여 상기 기판을 5분간 세정한 후 진공 증착기로 기판을 수송시켰다.The glass substrate coated with ITO (indium tin oxide) having a thickness of 1,300Å was placed in distilled water in which detergent was dissolved and ultrasonically cleaned. In this case, Fischer Co. was used as a detergent, and distilled water was filtered secondly as a filter of Millipore Co. as a distilled water. After ITO was washed for 30 minutes, ultrasonic washing was performed twice with distilled water for 10 minutes. After washing the distilled water, ultrasonic washing with a solvent of isopropyl alcohol, acetone, methanol, dried and transported to a plasma cleaner. In addition, the substrate was cleaned for 5 minutes using an oxygen plasma, and then the substrate was transferred to a vacuum evaporator.
상기와 같이 준비된 ITO 투명 전극 위에 하기 HI-1 화합물을 50Å의 두께로 열 진공 증착하여 정공주입층을 형성하였다. 상기 정공주입층 위에 하기 HT-1 화합물을 250Å의 두께로 열 진공 증착하여 정공수송층을 형성하고, HT-1 증착막 위에 하기 HT-2 화합물을 50Å 두께로 진공 증착하여 전자저지층을 형성하였다. 상기 HT-2 증착막 위에 발광층으로서 앞서 제조예 1에서 제조한 화합물 1, 하기 YGH-1 화합물, 및 인광도펀트 YGD-1을 44:44:12의 중량비로 공증착하여 400Å 두께의 발광층을 형성하였다. 상기 발광층 위에 하기 ET-1 화합물을 250Å의 두께로 진공 증착하여 전자수송층을 형성하고, 상기 전자수송층 위에 하기 ET-2 화합물 및 Li를 98:2의 중량비로 진공 증착하여 100Å 두께의 전자주입층을 형성하였다. 상기 전자주입층 위에 1000Å 두께로 알루미늄을 증착하여 음극을 형성하였다.On the ITO transparent electrode prepared as above, the following HI-1 compound was thermally vacuum deposited to a thickness of 50 kPa to form a hole injection layer. A hole transport layer was formed by thermal vacuum deposition of the following HT-1 compound to a thickness of 250 kPa on the hole injection layer, and an electron blocking layer was formed by vacuum depositing the following HT-2 compound to a thickness of 50 kPa on the HT-1 deposition film. Compound 1, the following YGH-1 compound, and phosphorescent dopant YGD-1, which were prepared in Preparation Example 1 as a light emitting layer on the HT-2 deposited film, were co-deposited at a weight ratio of 44:44:12 to form a light emitting layer having a thickness of 400 kHz. The following ET-1 compound was vacuum deposited to a thickness of 250 kPa on the light emitting layer to form an electron transport layer. Formed. Aluminum was deposited to a thickness of 1000 Å on the electron injection layer to form a cathode.
상기의 과정에서 유기물의 증착속도는 0.4 ~ 0.7 Å/sec를 유지하였고, 알루미늄은 2 Å/sec의 증착 속도를 유지하였으며, 증착시 진공도는 1 × 10-7 ~ 5 × 10-8 torr를 유지하였다.In the above process, the deposition rate of the organic material was maintained at 0.4 ~ 0.7 Å / sec, the aluminum was maintained at the deposition rate of 2 Å / sec, the vacuum during deposition was maintained at 1 × 10 -7 ~ 5 × 10 -8 torr It was.
<실험예 2 내지 6>Experimental Examples 2 to 6
상기 실험예 1에서 제조예 1의 화합물 1 대신 하기 표 1에 기재된 화합물을 사용하는 것을 제외하고는, 상기 실험예 1과 동일한 방법으로 유기 발광 소자를 제조하였다.An organic light emitting diode was manufactured according to the same method as Experimental Example 1 except for using the compound described in Table 1 below instead of compound 1 of Preparation Example 1 in Experimental Example 1.
<비교 실험예 1 내지 2><Comparative Experimental Examples 1 and 2>
상기 실험예 1에서 제조예 1의 화합물 1 대신 하기 표 1에 기재된 화합물을 사용하는 것을 제외하고는, 상기 실험예 1과 동일한 방법으로 유기 발광 소자를 제조하였다. 하기 표 1의 CE1 내지 CE3의 화합물은 하기와 같다.An organic light-emitting device was manufactured in the same manner as in Experiment 1, except that Compound 1 in Preparation Example 1 was used instead of Compound 1 of Preparation Example 1. The compounds of CE1 to CE3 in Table 1 are as follows.
상기 실험예 및 비교실험예에서 유기 발광 소자를 10mA/cm2의 전류 밀도에서 전압과 효율을 측정하였고, 50mA/cm2의 전류 밀도에서 수명을 측정하여 그 결과를 하기 표 1에 나타내었다. 이때, LT95는 초기 휘도 대비 95%가 되는 시간을 의미한다In the above experimental examples and comparative examples, the organic light emitting diodes were measured voltage and efficiency at a current density of 10 mA / cm 2 , and lifespan was measured at a current density of 50 mA / cm 2 , and the results are shown in Table 1 below. At this time, LT95 means 95% of initial luminance.
상기 표 1에서 나타난 바와 같이, 본 발명의 화합물을 발광층 물질로 사용할 경우, 비교 실험예에 비하여 구동 전압이 낮고, 효율 및 수명 특성이 현저히 우수한 것을 확인할 수 있었다. 이는 벤조옥사졸과 카바졸기 사이에 결합이 형성됨으로서 전자 안정성이 증가되고, 동시에 축합된 카바졸기와의 상호 작용으로 전자 안정성이 증가된것으로 보여진다.As shown in Table 1, when the compound of the present invention is used as a light emitting layer material, it was confirmed that the driving voltage is low, efficiency and life characteristics are significantly superior to the comparative experimental example. It is believed that the electronic stability is increased by the formation of a bond between the benzoxazole and the carbazole group, and the electronic stability is increased by the interaction with the condensed carbazole group.
[부호의 설명][Description of the code]
1: 기판 2: 양극1: substrate 2: anode
3: 발광층 4: 음극3: light emitting layer 4: cathode
5: 정공주입층 6: 정공수송층5: hole injection layer 6: hole transport layer
7: 발광층 8: 전자수송층7: light emitting layer 8: electron transport layer
Claims (11)
- 하기 화학식 1로 표시되는 화합물:Compound represented by the following formula (1):[화학식 1][Formula 1]상기 화학식 1에서,In Chemical Formula 1,L는 직접 결합; 치환 또는 비치환된 C1-60 알킬렌; 또는 치환 또는 비치환된 C6-60 아릴렌이고,L is a direct bond; Substituted or unsubstituted C 1-60 alkylene; Or substituted or unsubstituted C 6-60 arylene,Ar은 치환 또는 비치환된 C6-60 아릴이고,Ar is substituted or unsubstituted C 6-60 aryl,R1 및 R2는 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 할로알콕시; 트리(C1-60 알킬)실릴; 또는 치환 또는 비치환된 C6-60 아릴이고,R 1 and R 2 are each independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,a1은 0 내지 7의 정수이고,a1 is an integer of 0 to 7,a2는 0 내지 5의 정수이고,a2 is an integer of 0 to 5,C1 내지 C4 중 인접한 두개의 탄소는 하기 화학식 2의 *와 연결되고,Two adjacent carbons of C 1 to C 4 are linked with * in Formula 2,[화학식 2][Formula 2]상기 화학식 2에서,In Chemical Formula 2,Y는 O, S, CR4R5 또는 NR6이고,Y is O, S, CR 4 R 5 or NR 6 ,R4 및 R5은 각각 독립적으로, 치환 또는 비치환된 C1-60 알킬이고,R 4 and R 5 are each independently substituted or unsubstituted C 1-60 alkyl,R6는 치환 또는 비치환된 C1-60 알킬; 또는 치환 또는 비치환된 C6-60 아릴이고,R 6 is substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl,R3은 각각 독립적으로, 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 할로알킬; 치환 또는 비치환된 C1-60 할로알콕시; 트리(C1-60 알킬)실릴; 또는 치환 또는 비치환된 C6-60 아릴이고,Each R 3 is independently hydrogen; heavy hydrogen; halogen; Cyano; A substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 haloalkyl; Substituted or unsubstituted C 1-60 haloalkoxy; Tri (C 1-60 alkyl) silyl; Or substituted or unsubstituted C 6-60 aryl,a3는 0 내지 4의 정수임.a3 is an integer of 0 to 4.
- 제 1항에 있어서,The method of claim 1,상기 화학식 1로 표시되는 화합물은, 하기 화학식 3 내지 8로 표시되는 화합물로 이루어진 군으로부터 선택되는 어느 하나인, 화합물:The compound represented by Formula 1 is any one selected from the group consisting of compounds represented by Formulas 3 to 8 below:[화학식 3][Formula 3][화학식 4][Formula 4][화학식 5][Formula 5][화학식 6][Formula 6][화학식 7][Formula 7][화학식 8][Formula 8]상기 화학식 3 내지 8에서, L, Ar, Y, R1, R2, R3, a1, a2 및 a3는 청구항 1에서 정의한 바와 같음.In Formulas 3 to 8, L, Ar, Y, R 1 , R 2 , R 3 , a1, a2 and a3 are as defined in claim 1.
- 제 1항에 있어서,The method of claim 1,L은 직접 결합; 페닐렌; 비페닐릴렌; 터페닐릴렌; 쿼터페닐릴렌; 나프틸렌; 페난트레닐렌; 트리페닐레닐렌; 크리세닐렌; 플루오란테닐렌; 피레닐렌; 또는 트라이페닐레닐렌인, 화합물.L is a direct bond; Phenylene; Biphenylylene; Terphenylylene; Quarterphenylylene; Naphthylene; Phenanthrenylene; Triphenylenylene; Chrysylene; Fluoranthhenylene; Pyrenylene; Or triphenylenylene.
- 제 1항에 있어서,The method of claim 1,Ar은 페닐; 비페닐릴; 터페닐릴; 쿼터페닐릴; 나프틸; 페난트레닐; 트리페닐레닐; 크리세닐; 플루오란테닐; 피레닐; 또는 트라이페닐레닐인, 화합물.Ar is phenyl; Biphenylyl; Terphenylyl; Quarterphenylyl; Naphthyl; Phenanthrenyl; Triphenylenyl; Chrysenyl; Fluoranthenyl; Pyrenyl; Or triphenylenyl.
- 제 1항에 있어서,The method of claim 1,R1 및 R2는 각각 독립적으로, 수소인, 화합물.R 1 and R 2 are each independently hydrogen.
- 제 1항에 있어서,The method of claim 1,R4 및 R5은 각각 독립적으로, 메틸인, 화합물.R 4 and R 5 are each independently methyl.
- 제 1항에 있어서,The method of claim 1,R6는 페닐인, 화합물.R 6 is phenyl.
- 제 1항에 있어서,The method of claim 1,R3는 수소인, 화합물.R 3 is hydrogen.
- 제 1항에 있어서,The method of claim 1,상기 화학식 1로 표시되는 화합물은, 하기로 구성되는 군으로부터 선택되는 어느 하나인, 화합물:Compound represented by Formula 1 is any one selected from the group consisting of:
- 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 제 1항 내지 제 9항 중 어느 하나의 항에 따른 화합물을 포함하는 것인, 유기 발광 소자.A first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers comprises a compound according to any one of claims 1 to 9. That is, an organic light emitting device.
- 제 10항에 있어서,The method of claim 10,상기 화합물을 포함하는 유기물층은 발광층인 것을 특징으로 하는, 유기 발광 소자.The organic material layer containing the compound is an organic light emitting device, characterized in that the light emitting layer.
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