WO2010104037A1 - 重合体、この重合体を用いた有機薄膜及びこれを備える有機薄膜素子 - Google Patents
重合体、この重合体を用いた有機薄膜及びこれを備える有機薄膜素子 Download PDFInfo
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- WO2010104037A1 WO2010104037A1 PCT/JP2010/053797 JP2010053797W WO2010104037A1 WO 2010104037 A1 WO2010104037 A1 WO 2010104037A1 JP 2010053797 W JP2010053797 W JP 2010053797W WO 2010104037 A1 WO2010104037 A1 WO 2010104037A1
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- C08G61/02—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
- C08G61/04—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms
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- H10K10/46—Field-effect transistors, e.g. organic thin-film transistors [OTFT]
- H10K10/462—Insulated gate field-effect transistors [IGFETs]
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- C08G2261/10—Definition of the polymer structure
- C08G2261/14—Side-groups
- C08G2261/15—Side-groups conjugated side-chains
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/40—Polymerisation processes
- C08G2261/41—Organometallic coupling reactions
- C08G2261/419—Acyclic diene metathesis [ADMET]
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/90—Applications
- C08G2261/92—TFT applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present invention relates to a polymer and a monomer, and an organic thin film using the polymer, an organic thin film element including the same, an organic thin film transistor, an organic solar cell, and an optical sensor.
- An organic thin film element using an organic semiconductor material preferably has a high charge transport property.
- the organic thin film device has a low conjugation property and a low LUMO.
- the organic semiconductor material is required to be able to form a good organic thin film at low cost in addition to high charge transportability. If the organic semiconductor material has a high solubility in a solvent, a uniform film can be easily formed in a large area by coating, but a compound having a conventional conjugation property will particularly achieve a low LUMO. The solubility in the solvent tended to be extremely low.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a polymer having low LUMO, high charge transportability, and high solubility in a solvent. Another object of the present invention is to provide a monomer for obtaining such a polymer, an organic thin film using the polymer, an organic thin film transistor including the organic thin film, an organic solar cell, and an optical sensor. And
- the polymer of the present invention is characterized by having a repeating unit represented by the formula (I).
- Ar 0 represents an optionally substituted aromatic ring or an optionally substituted heterocyclic ring
- X 1 and X 2 are the same or different and represent an oxygen atom or a sulfur atom. Indicates. ]
- the polymer of the present invention has a low LUMO because the side chain part contained in the repeating unit represented by the formula (I) has X 1 or X 2 , and this side chain part. but since the X 1 and X 2 has a conjugated structure by structure represented by a double bond and Ar 0 is bonded, has high conjugate as a whole side chain moiety. Therefore, the polymer of the present invention can exhibit excellent charge transport properties. Moreover, since the coupling
- the repeating unit represented by the formula (I) is preferably a repeating unit represented by the formula (Ia).
- the polymer has a low LUMO and a highly conjugated side chain, and the solubility tends to be further enhanced.
- X 1 and X 2 are the same as defined above, and Ar 1 and Ar 2 are the same or different and may have a substituent and a divalent aromatic hydrocarbon group having 6 or more carbon atoms. Alternatively, it represents a divalent heterocyclic group having 4 or more carbon atoms which may have a substituent, and R 1 and R 2 are the same or different and represent a hydrogen atom, a halogen atom or a monovalent group.
- Z 1 is defined by the formulas (i), (ii), (iii), (iv), (v), (vi), (vii), (viii) and (ix) (hereinafter, “(i) to (ix) ) ",
- R 3 , R 4 , R 5 and R 6 in these formulas are the same or different and represent a hydrogen atom or a monovalent group.
- R 3 and R 4 may be bonded to each other to form a ring, and the group represented by the formula (iv) may be horizontally reversed.
- the plurality of Ar 1 or Ar 2 may be the same or different.
- Ar 1 and Ar 2 are preferably the same or different and are groups represented by the formula (II).
- R 7 and R 8 are the same or different and each represents a hydrogen atom or a monovalent group
- Z 2 represents a formula (xi), (xii), (xiii), (xiv), (xv), Any one of the groups represented by (xvi), (xvii), (xviii) and (xix), wherein R 9 , R 10 , R 11 and R 12 are the same or different and represent a hydrogen atom; Alternatively, it represents a monovalent group, R 9 and R 10 may be bonded to each other to form a ring, and the group represented by the formula (xiv) may be horizontally reversed. ]
- Z 1 is preferably a group represented by formula (ii)
- Z 2 is a group represented by formula (xii). preferable. Polymers having these structures can exhibit even better charge transport properties.
- R 1 and R 2 in the formula (Ia) is preferably a group represented by the formula (III).
- Ar 3 represents a trivalent aromatic hydrocarbon group which may have a substituent or a trivalent heterocyclic group which may have a substituent
- Y 1 and Y 2 represent These are the same or different and represent an oxygen atom, a sulfur atom or a group represented by the formula (a).
- a 1 and A 2 are the same or different and each represents a hydrogen atom, a halogen atom or a monovalent group, and at least one of A 1 and A 2 is an electron-withdrawing group.
- the group represented by the formula (III) is preferably a group represented by the formula (IV).
- R 0 represents a hydrogen atom or a monovalent group
- j represents It is an integer from 1 to the number of substitutable sites on the ring to which R 0 is bonded.
- Z 3 represents any of the groups represented by the formulas (xxi), (xxii), (xxiii), (xxiv), (xxv), (xxvi), (xxvii), (xxviii), and (xxix).
- R 13 , R 14 , R 15 and R 16 in these formulas are the same or different and represent a hydrogen atom or a monovalent group, and R 13 and R 14 are bonded to each other to form a ring.
- the group represented by the formula (xxiv) may be reversed left and right. ]
- the present invention also provides a monomer represented by the formula (XI).
- a monomer of the present invention can easily form the above-described polymer of the present invention by polymerization, and can form a polymer having low LUMO, excellent charge transportability, and high solubility in a solvent. Very useful.
- Ar 0 represents an optionally substituted aromatic ring or an optionally substituted heterocyclic ring
- X 1 and X 2 are the same or different and represent an oxygen atom or a sulfur atom. Indicates. ]
- the monomer of the present invention is represented by the formula (XI-a).
- a monomer makes it possible to easily obtain the more preferable polymer described above.
- Ar 1 and Ar 2 are the same or different and each represents a divalent aromatic hydrocarbon group having 6 or more carbon atoms or a divalent heterocyclic group having 4 or more carbon atoms
- R 1 and R 2 are The same or different and represents a hydrogen atom, a halogen atom or a monovalent group
- X 1 and X 2 are the same or different and represent an oxygen atom or a sulfur atom.
- m and n are the same or different and are integers of 0 to 6.
- Z 1 represents any of the groups represented by formulas (i), (ii), (iii), (iv), (v), (vi), (vii), (viii) and (ix)
- R 3 , R 4 , R 5 and R 6 in these formulas are the same or different and each represents a hydrogen atom or a monovalent group, and R 3 and R 4 are bonded to each other to form a ring.
- the group represented by the formula (iv) may be horizontally reversed.
- Ar 1 or Ar 2 there are a plurality, the plurality of Ar 1 or Ar 2 may be the same or different.
- the present invention also provides an organic thin film containing the polymer of the present invention. Since the organic thin film of the present invention contains the above-mentioned polymer of the present invention, it has high charge transportability and can be formed by coating, and therefore has uniform characteristics even in a large area. Thus, various organic thin films including such an organic thin film can be provided.
- the present invention includes a source electrode and a drain electrode, an organic semiconductor layer serving as a current path between them, and a gate electrode that controls the amount of current passing through the current path.
- An organic thin film transistor comprising the organic thin film of the invention is provided.
- the organic semiconductor layer is made of the organic thin film of the present invention, high charge transportability can be exhibited, and the transistor has high characteristics.
- this invention provides an organic solar cell and an optical sensor provided with the organic thin film of the said invention. Since these organic thin film elements also include the organic thin film of the present invention, the charge transport property necessary for the operation of each element can be obtained well and excellent characteristics can be exhibited.
- the present invention it is possible to provide a polymer having low LUMO, high charge transportability, and high solubility in a solvent.
- a monomer for obtaining such a polymer an organic thin film using the polymer, an organic thin film element including the organic thin film, an organic solar cell, and an optical sensor.
- the polymer of this embodiment has a repeating unit represented by the formula (I).
- Such a polymer can be used as an organic n-type semiconductor because it has a highly conjugated ( ⁇ -conjugated) side chain moiety.
- it since it has a highly flexible structure in the bonding portion with the main chain, it has excellent solubility in a solvent, and an almost homogeneous organic thin film can be formed using a solution. Therefore, an organic thin film element having high performance can be produced by using such a polymer.
- Ar 0 represents an aromatic ring which may have a substituent or a heterocyclic ring which may have a substituent.
- X 1 and X 2 are the same or different and each represents an oxygen atom or a sulfur atom, preferably an oxygen atom.
- Examples of the aromatic ring of Ar 0 include a benzene ring and a condensed ring, and those having 6 to 60 carbon atoms are preferable, and those having 6 to 20 carbon atoms are more preferable.
- Examples of the condensed ring include naphthalene ring, anthracene ring, tetracene ring, pentacene ring, pyrene ring, perylene ring, and fluorene ring.
- Examples of the substituent that the aromatic ring may have include a halogen atom, a saturated or unsaturated hydrocarbon group, an aryl group, an alkoxy group, an aryloxy group, a monovalent heterocyclic group, an amino group, a nitro group, and a cyano group. Is mentioned.
- heterocyclic ring a heterocyclic ring having 4 to 60 carbon atoms is preferable, and a heterocyclic ring having 4 to 20 carbon atoms is more preferable.
- examples of such a heterocyclic ring include thiophene, thienothiophene, dithienothiophene, thiazole, pyrrole, pyridine, pyrimidine and the like.
- substituent that the heterocyclic ring may have include the same substituents that the aromatic ring may have.
- the repeating unit represented by the formula (I) is preferably a repeating unit represented by the formula (Ia).
- X 1 and X 2 are as defined above.
- Ar 1 and Ar 2 are the same or different, and a divalent aromatic hydrocarbon group having 6 or more carbon atoms which may have a substituent or a divalent having 4 or more carbon atoms which may have a substituent.
- R 1 and R 2 are the same or different and each represents a hydrogen atom, a halogen atom or a monovalent group.
- the plurality of Ar 1 or Ar 2 may be the same or different.
- Z 1 is represented by formulas (i), (ii), (iii), (iv), (v), (vi), (vii), (viii) and (ix).
- R 3 , R 4 , R 5 and R 6 in these formulas are the same or different and represent a hydrogen atom or a monovalent group, and R 3 and R 4 are bonded to each other Thus, a ring may be formed, and the group represented by the formula (iv) may be horizontally reversed.
- Z 1 is any of the groups represented by the formulas (i) to (ix), but the group represented by the formulas (ii), (iii), (v), (viii) and (ix) Any one is preferable, and any one of the groups represented by formulas (ii), (iii) and (v) is more preferable. Of these, a group represented by the formula (ii) is particularly preferable.
- the ring structure of the portion containing Z 1 is a thiophene ring, a furan ring, and a pyrrole ring, particularly a thiophene ring, it exhibits characteristic electrical properties and can be expected to exhibit new electrical properties that have not existed before.
- R 1 and R 2 in formula (Ia) are the same or different and are a hydrogen atom, a halogen atom or a monovalent group.
- R 3 , R 4 , R 5 and R 6 are the same or different and are a hydrogen atom or a monovalent group.
- Examples of the halogen atom for R 1 and R 2 include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- Examples of the monovalent group represented by R 1 to R 6 include a linear or branched low molecular chain group, a monovalent cyclic group having 3 to 60 carbon atoms (monocyclic, condensed ring, carbocyclic ring). Or a heterocyclic ring, which may be saturated or unsaturated, and may have a substituent), saturated or unsaturated hydrocarbon group, hydroxyl group, alkoxy group, alkanoyloxy group, amino group, oxyamino group, alkylamino Group, dialkylamino group, alkanoylamino group, cyano group, nitro group, sulfo group, alkyl group substituted with halogen atom, alkoxysulfonyl group (alkoxy group may be substituted with halogen atom), alkylsulfonyl group ( The alkyl group may be substituted with a halogen atom.), Sulfamoyl group, alkylsulfamoyl group
- Examples of the saturated hydrocarbon group include a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, and a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms is preferable.
- Examples of the alkyl group include methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, iso-butyl group, tert-butyl group, 3-methylbutyl group, pentyl group, hexyl group and 2-ethylhexyl.
- alkyl group in a group containing an alkyl group in its structure include groups similar to these.
- Examples of the unsaturated hydrocarbon group include a vinyl group, 1-propenyl group, allyl group, propargyl group, isopropenyl group, 1-butenyl group and 2-butenyl group.
- alkanoyl group examples include formyl group, acetyl group, propionyl group, isobutyryl group, valeryl group and isovaleryl group. Further, examples of the alkanoyl group in a group containing an alkanoyl group in the structure (for example, alkanoyloxy group, alkanoylamino group) include the same groups as these.
- the alkanoyl group having 1 carbon atom means a formyl group, and the same applies to a group containing an alkanoyl group in its structure.
- R 1 and R 2 among the above, a hydrogen atom, a fluorine atom, an alkyl group having 1 to 20 carbon atoms, a fluoroalkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, A fluoroalkoxy group having 20 is preferable, and a hydrogen atom, a fluorine atom, an alkyl group having 1 to 20 carbon atoms, and a fluoroalkyl group having 1 to 20 carbon atoms are more preferable.
- At least one of R 1 and R 2 is preferably a group represented by the formula (III).
- Ar 3 represents a trivalent aromatic hydrocarbon group which may have a substituent or a trivalent heterocyclic group which may have a substituent
- Y 1 and Y 2 is the same or different and represents an oxygen atom, a sulfur atom or a group represented by the formula (a).
- a 1 and A 2 are the same or different and each represents a hydrogen atom, a halogen atom or a monovalent group, and at least one of A 1 and A 2 is an electron-withdrawing group.
- the trivalent aromatic hydrocarbon group as Ar 3 in formula (III) refers to the remaining atomic group obtained by removing three hydrogen atoms from a benzene ring or condensed ring, preferably having 6 to 60 carbon atoms, More preferably, it has 6 to 20 carbon atoms. Examples of the condensed ring include those similar to the case of Ar 0 described above.
- the trivalent aromatic hydrocarbon group is preferably an atomic group remaining after removing three hydrogen atoms from a benzene ring or a fluorene ring.
- the trivalent aromatic hydrocarbon group may have a substituent. In that case, the carbon number of the trivalent aromatic hydrocarbon group does not include the carbon number of the substituent.
- substituents examples include a halogen atom, a saturated or unsaturated hydrocarbon group, an aryl group, an alkoxy group, an aryloxy group, a monovalent heterocyclic group, an amino group, a nitro group, and a cyano group.
- the trivalent heterocyclic group refers to a remaining atomic group obtained by removing three hydrogen atoms from a heterocyclic compound, and usually has 3 to 60 carbon atoms, preferably 3 to 20 carbon atoms.
- Examples of the heterocyclic compound include those similar to the case of Ar 0 described above.
- the trivalent heterocyclic group is preferably an atomic group remaining after removing two hydrogen atoms from thiophene or thienothiophene.
- the trivalent heterocyclic group may further have a substituent. In that case, the carbon number of the trivalent heterocyclic group does not include the carbon number of the substituent.
- substituents examples include a halogen atom, a saturated or unsaturated hydrocarbon group, an aryl group, an alkoxy group, an aryloxy group, a monovalent heterocyclic group, an amino group, a nitro group, and a cyano group.
- Examples of the halogen atom or monovalent group as A 1 and A 2 in the formula (a) include the same groups as those in the above R 1 and R 2 .
- Examples of the electron-withdrawing group include a cyano group, a nitro group, an aldehyde group, an acyl group, an alkoxycarbonyl group, a carboxyl group, a hydroxyl group, and a halogen atom.
- a cyano group, a nitro group, and a halogen atom are preferable, and a cyano group Is particularly preferred.
- LUMO can be further reduced.
- a group represented by the formula (IV) is particularly preferable.
- Y 3 and Y 4 are the same or different and are an oxygen atom, a sulfur atom or a group represented by the formula (a), and preferably an oxygen atom.
- R 0 represents a hydrogen atom or a monovalent group
- j is an integer from 1 to the number of substitutable sites on the ring to which R 0 is bonded. When a plurality of R 0 are present, they may be the same or different.
- Z 3 represents any one of groups represented by the formulas (xxi) to (xxix), and R 13 , R 14 , R 15 and R 16 in these formulas are the same or different and represent a hydrogen atom or a monovalent group.
- R 13 and R 14 may be bonded to each other to form a ring, and the group represented by the formula (xxiv) may be horizontally reversed.
- Z 3 in the formula (IV) is preferably a group represented by any one of the formulas (xxii), (xxiii), (xxv), (xxviii) and (xxix), and the formulas (xxii), (xxiii) and The group represented by any one of (xxv) is more preferable, and the group represented by the formula (xxii) is still more preferable.
- the ring containing Z 3 is a thiophene ring, a furan ring, or a pyrrole ring, particularly a thiophene ring, it exhibits characteristic electrical properties and can be expected to exhibit new electrical properties that have not existed before.
- R 0 and R 13 to R 16 the same groups as the monovalent groups shown as R 1 and R 2 can be applied.
- Ar 1 and Ar 2 are the same or different and are a divalent aromatic hydrocarbon group having 6 or more carbon atoms or a divalent heterocyclic group having 4 or more carbon atoms, These may have a substituent.
- the divalent aromatic hydrocarbon group represented by Ar 1 or Ar 2 refers to the remaining atomic group obtained by removing two hydrogen atoms from a benzene ring or condensed ring, preferably 6 to 60 carbon atoms, more preferably Is 6-20.
- the condensed ring include naphthalene ring, anthracene ring, tetracene ring, pentacene ring, pyrene ring, perylene ring, and fluorene ring.
- the remaining atomic group remove
- the carbon number of the divalent aromatic hydrocarbon group does not include the carbon number of the substituent.
- the substituent include a halogen atom, a saturated or unsaturated hydrocarbon group, an aryl group, an alkoxy group, an aryloxy group, a monovalent heterocyclic group, an amino group, a nitro group, and a cyano group.
- the divalent heterocyclic group represented by Ar 1 or Ar 2 refers to the remaining atomic group obtained by removing two hydrogen atoms from a heterocyclic compound, preferably 4 to 60 carbon atoms, more preferably It has 4 to 20 carbon atoms.
- the heterocyclic compound is an organic compound having a cyclic structure, and the elements constituting the ring include not only carbon atoms but also heteroatoms such as oxygen, sulfur, nitrogen, phosphorus, boron, and silicon in the ring. The thing included in.
- Examples of the divalent heterocyclic group include the remaining atomic groups obtained by removing two hydrogen atoms from thiophene, thienothiophene, dithienothiophene, thiazole, pyrrole, pyridine, and pyrimidine, and hydrogen atoms from thiophene, thienothiophene, and thiazole.
- the remaining atomic groups excluding 2 are preferred.
- the carbon number of the divalent heterocyclic group does not include the carbon number of the substituent.
- substituents examples include a halogen atom, a saturated or unsaturated hydrocarbon group, an aryl group, an alkoxy group, an aryloxy group, a monovalent heterocyclic group, an amino group, a nitro group, and a cyano group.
- R 7 and R 8 are the same or different and each represents a hydrogen atom or a monovalent group
- Z 2 represents the formula (xi), (xii), (xiii), (xiv), (xv), (x xvi), (xvii), (xviii) and (xix)
- R 9 , R 10 , R 11 and R 12 in these formulas are the same or different and each represents a hydrogen atom or Represents a monovalent group
- R 9 and R 10 may be bonded to each other to form a ring, and the group represented by the formula (xiv) may be horizontally reversed.
- Z 2 in the formula (II) is preferably a group represented by any one of the formulas (xiii), (xiii), (xv), (xviii) and (xix), and the formulas (xii), (xiii) ) And (xv) are more preferable, and a group represented by the formula (xii) is more preferable.
- the ring containing Z 2 is a thiophene ring, a furan ring, or a pyrrole ring, particularly a thiophene ring, it exhibits characteristic electrical properties and can be expected to exhibit new electrical properties that have not existed before.
- the polymer of the present embodiment may have a repeating unit represented by the formula (I) as a repeating unit, preferably a repeating unit represented by the formula (Ia). 1 type or 2 or more types can be contained.
- the polymer may further have one or more repeating units other than the formula (I) (preferably the formula (Ia)).
- the repeating unit other than the formula (I) preferably the formula (Ia)
- the repeating unit represented by the formula (V) is suitable.
- the repeating unit represented by Formula (V) it is possible to more appropriately adjust the solubility and mechanical, thermal, or electronic properties of the polymer.
- the repeating unit represented by Formula (V) can also contain 2 or more types.
- R 17 and R 18 are the same or different and each represents a hydrogen atom, a halogen atom or a monovalent group.
- the monovalent group the same groups as described above can be applied.
- R 17 and R 18 are preferably a hydrogen atom or an alkyl group.
- these ratios are preferably 100 moles.
- the latter is 10 to 1000 mol, more preferably 25 to 400 mol of the latter with respect to 100 mol of the former, and still more preferably 50 to 200 mol of the latter with respect to 100 mol of the former.
- R 0 , R 1 , R 2 , R 7 , R 8 , Z 1 , Z 2 and Z 3 are each as defined above.
- symbol may be the same or different.
- the property and durability at the time of setting it as an organic thin film element may be reduced when the polymerization reactive group remains in the terminal.
- the polymerization reactive group may be protected with a stable group.
- polymers those represented by the formulas (1) to (9) are particularly suitable. These polymers have low LUMO, excellent charge transportability, and extremely excellent solubility in solvents.
- R 1 , R 2 , R 7 and R 8 are all as defined above.
- the groups represented by the same symbol may be the same or different.
- P represents an integer of 1 to 20
- q, r, and s are the same or different and represent an integer of 0 to 20.
- k represents the degree of polymerization of the polymer, and can be appropriately selected according to the forming method when the organic thin film is formed using the polymer.
- k is preferably an integer of 3 to 500, more preferably an integer of 6 to 300, and still more preferably an integer of 20 to 200.
- the polymer of the present invention preferably has a polystyrene-equivalent number average molecular weight of 1 ⁇ 10 3 to 1 ⁇ 10 7. More preferably, it is 10 4 to 1 ⁇ 10 6 .
- the polymer may be produced by any method, but the following production method is particularly suitable.
- the polymer is preferably produced by preparing monomers represented by formulas (XI) and (XII) as raw material compounds and reacting them. Thereby, a polymer having a repeating unit represented by the formula (Ia) and a repeating unit represented by the formula (V) can be obtained satisfactorily.
- Such a production method is an example, and the structure, type, and the like of the raw material compound can be changed as appropriate according to the structure of the target polymer.
- Z 1 , Ar 1 , Ar 2 , X, R 1 , R 2 , R 17 , R 18 , m, and n are all as defined above.
- the method of reacting the monomer represented by the formula (XI) with the monomer represented by the formula (XII) is described in Journal of American Chemical Society, vol. 128 (2006) p.3510. Can be applied. That is, there can be mentioned a method of cyclopolymerization by reacting a monomer having a non-conjugated diene in the presence of a transition metal complex catalyst.
- a transition metal complex catalyst palladium diimine complex-tetraarylborate or the like can be applied.
- the reaction time is preferably 0.5 to 150 hours.
- the reaction temperature is preferably between ⁇ 10 ° C. and the boiling point of the solvent, more preferably 20 to 70 ° C.
- a polymer When a polymer is used as a material for an organic thin film element, its purity may affect the element characteristics. Therefore, before the reaction, it is preferable to polymerize after the monomer as the raw material compound is purified by a method such as distillation, sublimation purification, recrystallization and the like. Further, after the synthesis of the polymer, it is preferable to carry out a purification treatment such as reprecipitation purification, Soxhlet extraction, and fractionation by chromatography.
- Solvents used in the reaction include saturated hydrocarbons such as pentane, hexane, heptane, octane and cyclohexane, unsaturated hydrocarbons such as benzene, toluene, ethylbenzene and xylene, carbon tetrachloride, chloroform, dichloromethane, chlorobutane, bromobutane, chloro Halogenated saturated hydrocarbons such as pentane, bromopentane, chlorohexane, bromohexane, chlorocyclohexane and bromocyclohexane, halogenated unsaturated hydrocarbons such as chlorobenzene, dichlorobenzene and trichlorobenzene, methanol, ethanol, propanol, isopropanol, butanol, alcohols such as t-butyl alcohol, carboxylic acids such as formic acid, acetic acid and prop
- the polymer After the reaction, the polymer can be obtained through normal post-treatment such as quenching with water, extraction with an organic solvent, and evaporation of the solvent. Isolation and purification of the polymer can be performed by a method such as fractionation by chromatography or recrystallization.
- Organic thin film contains the polymer which has the characteristics mentioned above.
- the thickness of the organic thin film is preferably 1 nm to 100 ⁇ m, more preferably 2 nm to 1000 nm, still more preferably 5 nm to 500 nm, and particularly preferably 20 nm to 200 nm.
- the organic thin film may contain one kind of polymer alone or may contain two or more kinds of polymers. Moreover, in order to improve the electron transport property or hole transport property of an organic thin film, in addition to the polymer which concerns on the said embodiment, the hole transport material and the electron transport material may be mixed and contained.
- hole transporting material known materials can be used, for example, pyrazoline derivatives, arylamine derivatives, stilbene derivatives, triaryldiamine derivatives, oligothiophenes and derivatives thereof, polyvinylcarbazole and derivatives thereof, polysilanes and derivatives thereof, side chains.
- polysiloxane derivatives having an aromatic amine in the main chain polyaniline and derivatives thereof, polythiophene and derivatives thereof, polypyrrole and derivatives thereof, polyarylene vinylene and derivatives thereof, polythienylene vinylene and derivatives thereof, and the like can be given.
- known materials can be used, such as oxadiazole derivatives, anthraquinodimethane and its derivatives, benzoquinone and its derivatives, naphthoquinone and its derivatives, anthraquinone and its derivatives, tetracyanoanthraquinodimethane and Derivatives thereof, fluorenone derivatives, diphenyldicyanoethylene and derivatives thereof, diphenoquinone derivatives, or metal complexes of 8-hydroxyquinoline and derivatives thereof, polyquinoline and derivatives thereof, polyquinoxaline and derivatives thereof, polyfluorene and derivatives thereof, and fullerenes such as C60 And derivatives thereof.
- the organic thin film may contain a charge generating material in order to generate a charge by light absorbed in the organic thin film.
- charge generation materials such as azo compounds and derivatives thereof, diazo compounds and derivatives thereof, metal-free phthalocyanine compounds and derivatives thereof, metal phthalocyanine compounds and derivatives thereof, perylene compounds and derivatives thereof, and polycyclic quinone compounds. And derivatives thereof, squarylium compounds and derivatives thereof, azurenium compounds and derivatives thereof, thiapyrylium compounds and derivatives thereof, and fullerenes such as C60 and derivatives thereof.
- the organic thin film may contain other materials necessary for developing various functions.
- examples of other materials include a sensitizer for sensitizing the function of generating a charge by absorbed light, a stabilizer for increasing stability, a UV absorber for absorbing UV light, and the like. .
- the organic thin film may contain a polymer compound material other than the polymer of the above embodiment as a polymer binder in order to improve mechanical properties.
- a polymer binder those not extremely disturbing the electron transport property or hole transport property are preferable, and those having no strong absorption against visible light are preferably used.
- Such polymer binders include poly (N-vinylcarbazole), polyaniline and derivatives thereof, polythiophene and derivatives thereof, poly (p-phenylene vinylene) and derivatives thereof, poly (2,5-thienylene vinylene) and derivatives thereof.
- Derivatives, polycarbonate, polyacrylate, polymethyl acrylate, polymethyl methacrylate, polystyrene, polyvinyl chloride, polysiloxane and the like are exemplified.
- Examples of the method for producing an organic thin film include a film formation method using a polymer and a solution containing an electron transporting material or a hole transporting material mixed as necessary, a polymer binder, and the like. Moreover, when a polymer has sublimation property, a thin film can also be formed by a vacuum evaporation method.
- any solvent that dissolves a polymer, an electron transporting material, a hole transporting material, a polymer binder, or the like may be used.
- the solvent include unsaturated hydrocarbon solvents such as toluene, xylene, mesitylene, tetralin, decalin, bicyclohexyl, n-butylbenzene, sec-butylbenzene, tert-butylbenzene, carbon tetrachloride, chloroform, dichloromethane, dichloroethane, Halogenated saturated hydrocarbon solvents such as chlorobutane, bromobutane, chloropentane, bromopentane, chlorohexane, bromohexane, chlorocyclohexane and bromocyclohexane, halogenated unsaturated hydrocarbon solvents such as chlorobenzene, dichlorobenzene and trichloro
- film forming methods using a solution examples include spin coating, casting, micro gravure coating, gravure coating, bar coating, roll coating, wire bar coating, dip coating, spray coating, and screen printing.
- Application methods such as a flexographic printing method, an offset printing method, an ink jet printing method, a dispenser printing method, a nozzle coating method, and a capillary coating method can be used. Of these, spin coating, flexographic printing, ink jet printing, dispenser printing, nozzle coating, and capillary coating are preferred.
- the step of producing the organic thin film may include a step of orienting the polymer.
- the main chain molecules or the side chain molecules are arranged in one direction, so that the electron mobility or the hole mobility is improved.
- a method known as a liquid crystal alignment method can be used as a method of aligning the polymer.
- the rubbing method, the photo-alignment method, the sharing method (shear stress application method) and the pulling coating method are simple, useful and easy to use as the alignment method, and the rubbing method and the sharing method are preferable.
- the organic thin film of the above-described embodiment includes the polymer of the above-described embodiment, it has excellent charge (electron or hole) transportability. Therefore, this organic thin film can efficiently transport electrons or holes injected from electrodes or the like, or electric charges generated by light absorption, etc., and can be used for various electric elements (organic thin film elements) using the organic thin film. Can be applied.
- the polymer of the above embodiment tends to be excellent in environmental stability, it is possible to produce an organic thin film element having stable performance even in normal air by forming a thin film using these polymers. It becomes.
- examples of the organic thin film element will be described.
- the organic thin film transistor includes a source electrode and a drain electrode, an organic semiconductor layer containing the above-described polymer (that is, an active layer), and a gate electrode that controls the amount of current passing through the current path. Any structure may be used, and field effect type, electrostatic induction type and the like are exemplified.
- a field-effect organic thin film transistor includes a source electrode and a drain electrode, an organic semiconductor layer including a polymer that serves as a current path between them, a gate electrode that controls the amount of current passing through the current path, and an organic semiconductor layer and a gate electrode. It is preferable to provide an insulating layer disposed therebetween.
- the source electrode and the drain electrode are preferably provided in contact with the organic semiconductor layer containing the polymer, and the gate electrode is preferably provided with an insulating layer in contact with the organic semiconductor layer interposed therebetween.
- the electrostatic induction type organic thin film transistor has a source electrode and a drain electrode, an organic semiconductor layer containing a polymer serving as a current path between them, and a gate electrode for controlling an amount of current passing through the current path. It is preferable to be provided in the organic semiconductor layer.
- the source electrode, the drain electrode, and the gate electrode provided in the organic semiconductor layer are preferably provided in contact with the organic semiconductor layer containing the polymer.
- the structure of the gate electrode may be any structure as long as a current path flowing from the source electrode to the drain electrode is formed and the amount of current flowing through the current path can be controlled by a voltage applied to the gate electrode. It is done.
- FIG. 1 is a schematic cross-sectional view of an organic thin film transistor (field effect organic thin film transistor) according to a first embodiment.
- An organic thin film transistor 100 shown in FIG. 1 includes a substrate 1, a source electrode 5 and a drain electrode 6 formed on the substrate 1 with a predetermined interval, and a source electrode 5 and a drain electrode 6 so as to cover the substrate 1. Formed on the insulating layer 3 so as to cover the region of the insulating layer 3 formed between the source electrode 5 and the drain electrode 6, the insulating layer 3 formed on the organic semiconductor layer 2, and the insulating layer 3 between the source electrode 5 and the drain electrode 6.
- the gate electrode 4 is provided.
- FIG. 2 is a schematic cross-sectional view of an organic thin film transistor (field effect organic thin film transistor) according to a second embodiment.
- the organic thin film transistor 110 shown in FIG. 2 includes a substrate 1, a source electrode 5 formed on the substrate 1, an organic semiconductor layer 2 formed on the substrate 1 so as to cover the source electrode 5, The drain electrode 6 formed on the organic semiconductor layer 2 with a predetermined interval, the insulating layer 3 formed on the organic semiconductor layer 2 and the drain electrode 6, and the insulation between the source electrode 5 and the drain electrode 6 And a gate electrode 4 formed on the insulating layer 3 so as to cover the region of the layer 3.
- FIG. 3 is a schematic cross-sectional view of an organic thin film transistor (field effect organic thin film transistor) according to a third embodiment.
- An organic thin film transistor 120 shown in FIG. 3 includes a substrate 1, an organic semiconductor layer 2 formed on the substrate 1, a source electrode 5 and a drain electrode 6 formed on the organic semiconductor layer 2 with a predetermined interval, The insulating layer 3 formed on the organic semiconductor layer 2 so as to partially cover the source electrode 5 and the drain electrode 6, the region of the insulating layer 3 where the source electrode 5 is formed below, and the drain electrode 6 below And a gate electrode 4 formed on the insulating layer 3 so as to partially cover the formed region of the insulating layer 3.
- FIG. 4 is a schematic cross-sectional view of an organic thin film transistor (field effect organic thin film transistor) according to a fourth embodiment.
- 4 includes a substrate 1, a gate electrode 4 formed on the substrate 1, an insulating layer 3 formed on the substrate 1 so as to cover the gate electrode 4, and the gate electrode 4 at the bottom.
- FIG. 5 is a schematic cross-sectional view of an organic thin film transistor (field effect organic thin film transistor) according to a fifth embodiment.
- An organic thin film transistor 140 shown in FIG. 5 includes a substrate 1, a gate electrode 4 formed on the substrate 1, an insulating layer 3 formed on the substrate 1 so as to cover the gate electrode 4, and the gate electrode 4 at the bottom.
- FIG. 6 is a schematic cross-sectional view of an organic thin film transistor (field effect organic thin film transistor) according to a sixth embodiment.
- An organic thin film transistor 150 shown in FIG. 6 includes a substrate 1, a gate electrode 4 formed on the substrate 1, an insulating layer 3 formed on the substrate 1 so as to cover the gate electrode 4, and the gate electrode 4 at the bottom.
- An organic semiconductor layer 2 formed so as to cover the region of the insulating layer 3 formed on the substrate, a source electrode 5 formed on the insulating layer 3 so as to partially cover the region of the organic semiconductor layer 2, and an organic semiconductor A source electrode 5 and a drain electrode 6 formed on the insulating layer 3 at a predetermined interval so as to partially cover the region of the layer 2 are provided.
- FIG. 7 is a schematic cross-sectional view of an organic thin film transistor (static induction organic thin film transistor) according to a seventh embodiment.
- the organic thin film transistor 160 shown in FIG. 7 has a predetermined interval on the substrate 1, the source electrode 5 formed on the substrate 1, the organic semiconductor layer 2 formed on the source electrode 5, and the organic semiconductor layer 2.
- the organic semiconductor layer 2 and / or the organic semiconductor layer 2a contain the polymer of the present invention, and the current path between the source electrode 5 and the drain electrode 6 (Channel).
- the gate electrode 4 controls the amount of current passing through the current path (channel) in the organic semiconductor layer 2 and / or the organic semiconductor layer 2a by applying a voltage.
- Such a field effect organic thin film transistor can be manufactured by a known method, for example, a method described in JP-A-5-110069.
- the electrostatic induction organic thin film transistor can be produced by a known method, for example, a method described in JP-A-2004-006476.
- the substrate 1 it is sufficient that the characteristics as an organic thin film transistor are not hindered, but a glass substrate, a flexible film substrate, or a plastic substrate can be used.
- the organic semiconductor layer 2 When forming the organic semiconductor layer 2, it is advantageous and preferable in production to use a compound soluble in a solvent such as an organic solvent. And since the polymer of embodiment mentioned above has high solubility with respect to a solvent, the organic thin film used as the organic-semiconductor layer 2 is formed favorably using the manufacturing method of the organic thin film demonstrated above. Can do.
- a material having high electrical insulation may be used, and a known material can be used.
- a known material can be used.
- SiOx, SiNx, Ta2O5, polyimide, polyvinyl alcohol, polyvinylphenol, organic glass, and a photoresist are mentioned. From the viewpoint of lowering the voltage, a material having a high dielectric constant is preferable.
- the surface of the insulating layer 3 is treated with a surface treatment agent such as a silane coupling agent in order to improve the interface characteristics between the insulating layer 3 and the organic semiconductor layer 2. It is also possible to form the organic semiconductor layer 2 after surface modification.
- a surface treatment agent such as a silane coupling agent
- the surface treatment agent include silylamine compounds such as long-chain alkylchlorosilanes, long-chain alkylalkoxysilanes, fluorinated alkylchlorosilanes, fluorinated alkylalkoxysilanes, and hexamethyldisilazane.
- the surface of the insulating layer may be treated with ozone UV or O 2 plasma.
- a protective film on the organic thin film transistor after the organic thin film transistor is manufactured in order to protect the element.
- an organic thin-film transistor is interrupted
- the influence from the process of forming the display device driven on an organic thin-film transistor with a protective film can be reduced.
- Examples of the method for forming the protective film include a method of covering with a UV curable resin, a thermosetting resin or an inorganic SiONx film.
- a method of covering with a UV curable resin, a thermosetting resin or an inorganic SiONx film In order to effectively cut off from the atmosphere, it is preferable to perform the steps from the preparation of the organic thin film transistor to the formation of the protective film without exposure to the atmosphere (for example, in a dry nitrogen atmosphere or in a vacuum).
- FIG. 8 is a schematic cross-sectional view of the solar cell according to the embodiment.
- a solar cell 200 shown in FIG. 8 includes an organic semiconductor layer composed of a substrate 1, a first electrode 7a formed on the substrate 1, and an organic thin film containing the polymer formed on the first electrode 7a. 2 and a second electrode 7 b formed on the organic semiconductor layer 2.
- a transparent or translucent electrode is used as one of the first electrode 7a and the second electrode 7b.
- an electrode material metals such as aluminum, gold, silver, copper, alkali metal, alkaline earth metal, and their translucent films and transparent conductive films can be used.
- each electrode is preferably selected so that the difference in work function is large.
- a charge generating agent, a sensitizer and the like can be added and used in order to increase photosensitivity.
- the substrate 1 a silicon substrate, a glass substrate, a plastic substrate, or the like can be used.
- FIG. 9 is a schematic cross-sectional view of the photosensor according to the first embodiment.
- An optical sensor 300 shown in FIG. 9 includes an organic semiconductor layer 2 made of an organic thin film containing a substrate 1, a first electrode 7a formed on the substrate 1, and a polymer formed on the first electrode 7a.
- FIG. 10 is a schematic cross-sectional view of an optical sensor according to the second embodiment.
- An optical sensor 310 illustrated in FIG. 10 is formed on the substrate 1, the first electrode 7a formed on the substrate 1, the charge generation layer 8 formed on the first electrode 7a, and the charge generation layer 8.
- the organic semiconductor layer 2 which consists of an organic thin film containing the made polymer, and the 2nd electrode 7b formed on the organic semiconductor layer 2 are provided.
- FIG. 11 is a schematic cross-sectional view of an optical sensor according to the third embodiment.
- An optical sensor 320 shown in FIG. 11 includes an organic semiconductor layer 2 composed of a substrate 1, a first electrode 7a formed on the substrate 1, and an organic thin film containing a polymer formed on the first electrode 7a. And a second electrode 7 b formed on the organic semiconductor layer 2.
- a transparent or translucent electrode is used as one of the first electrode 7a and the second electrode 7b.
- the charge generation layer 8 is a layer that absorbs light and generates charges.
- an electrode material metals such as aluminum, gold, silver, copper, alkali metal, alkaline earth metal, and their translucent films and transparent conductive films can be used.
- organic semiconductor layer 2 organic thin film
- a carrier generating agent, a sensitizer and the like can be added and used in order to increase photosensitivity.
- the base material 1 a silicon substrate, a glass substrate, a plastic substrate, etc. can be used as the base material 1.
- the nuclear magnetic resonance (NMR) spectrum is obtained using the product name JMN-270 (270 MHz at 1 H measurement) manufactured by JEOL (JEOL Ltd.) or the product name JMNLA-600 (600 MHz at 19 F measurement) manufactured by the same company. It was measured. Chemical shifts are expressed in parts per million (ppm). Tetramethylsilane (TMS) was used for the internal standard of 0 ppm.
- the coupling constant (J) is shown in hertz, and the abbreviations s, d, t, q, m, and br are singlet, doublet, triplet, quadruple, respectively. Represents a line, a multiplet, and a broad line.
- MS mass spectrometry
- EI electron ionization
- DI direct sample introduction
- GCMS-QP5050A trade name
- silica gel in the column chromatography separation trade name Silicagel 60N (40-50 ⁇ m) manufactured by Kanto Chemical Co., Ltd. was used. All chemical substances are reagent grade and purchased from Wako Pure Chemical Industries, Ltd., Tokyo Chemical Industry Co., Ltd., Kanto Chemical Co., Ltd., Nacalai Tesque Co., Ltd., Sigma Aldrich Japan Co., Ltd., or Daikin Chemicals Co., Ltd.
- Example 1 The polymer D was manufactured through the synthesis
- the number average molecular weight of polystyrene conversion of the obtained polymer D was 3100. Further, the reduction potential of the polymer D was ⁇ 1.98 V, indicating a low LUMO level, and the oxidation potential was 0.90 V. Furthermore, the other measurement result of the polymer D was as follows. 1 H NMR (400 MHz, CDCl 3 ) ⁇ 0.88-1.33 (broad), 6.77-7.22 (broad), 7.26-7.50 (broad), 7.77-8.16 ( broadcast)
- Example 2 ⁇ Synthesis 2 of Polymer D> Instead of stirring at room temperature for 48 hours, Polymer D was synthesized in the same manner as Polymer 1 Synthesis 1 in Example 1 except that stirring was performed at 40 ° C. for 48 hours. As a result, a polymer D having a polystyrene-equivalent number average molecular weight of 3800 was obtained.
- Example 5 The polymer L was manufactured through the synthesis
- the obtained compound is put into an eggplant flask, dissolved in THF, concentrated sulfuric acid is added thereto, and the mixture is stirred at room temperature. Subsequently, the reaction mixture obtained is poured onto ice and extracted with ethyl acetate, and then the organic layer is washed with saturated aqueous sodium hydrogen carbonate solution and water, and then dried over magnesium sulfate. Then, the solvent was distilled off under reduced pressure, and purified the resulting solid with GPC (CHCl 3), to give a compound J represented by the following formula.
- Example 6 ⁇ Preparation of organic thin film transistor and evaluation of transistor characteristics>
- a low resistance silicon wafer (a structure serving as a gate electrode / insulating layer) with a thermal oxide film (silicon oxide film) is immersed in ethanol, distilled water, and acetone in this order, and ultrasonic cleaning is performed. Thereafter, this silicon wafer is subjected to UV-ozone cleaning to obtain a substrate having a hydrophilic surface.
- This substrate is immersed in hexamethyldisilazane: chloroform at room temperature and ultrasonically washed with chloroform to obtain a surface-treated substrate.
- a coating solution in which the polymer D synthesized in Example 1 is dissolved in chloroform is prepared.
- This solution is formed on a surface-treated substrate by spin coating to form an organic thin film.
- a gold electrode (a source electrode and a drain electrode) is formed by vacuum deposition using a metal mask to produce an organic thin film transistor.
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Abstract
Description
本実施形態の重合体は、式(I)で表される繰り返し単位を有する。かかる重合体は、共役性の高い(π共役系の)側鎖部分を有することから、有機n型半導体として用いることができる。また、主鎖との結合部分に柔軟性の高い構造を有することから、溶媒への溶解性が優れており、溶液を用いてほぼ均質な有機薄膜を形成することができる。したがって、このような重合体を用いることで、高い性能を有する有機薄膜素子を製造することができる。
次に、重合体の製造方法の好適な実施形態について説明する。
次に、好適な実施形態に係る有機薄膜について説明する。本実施形態の有機薄膜は、上述した特徴を有する重合体を含むものである。
上述した実施形態の有機薄膜は、上記実施形態の重合体を含むことから、優れた電荷(電子又はホール)輸送性を有するものとなる。したがって、この有機薄膜は、電極等から注入された電子又はホール、或いは、光吸収により発生した電荷等を効率よく輸送できるものであり、有機薄膜を用いた各種の電気素子(有機薄膜素子)に応用することができる。また、上記実施形態の重合体は、環境安定性にも優れる傾向にあるため、これらを用いて薄膜を形成することで、通常の大気中においても性能が安定している有機薄膜素子が製造可能となる。以下、有機薄膜素子の例について説明する。
まず、好適な実施形態に係る有機薄膜トランジスタについて説明する。有機薄膜トランジスタは、ソース電極及びドレイン電極、これらの間の電流経路となり上述した重合体を含む有機半導体層(すなわち活性層である。以下同様)、電流経路を通る電流量を制御するゲート電極を備えた構造であればよく、電界効果型、静電誘導型などが例示される。
次に、本発明の有機薄膜の太陽電池への応用を説明する。図8は、実施形態に係る太陽電池の模式断面図である。図8に示す太陽電池200は、基板1と、基板1上に形成された第1の電極7aと、第1の電極7a上に形成された上記重合体を含有する有機薄膜からなる有機半導体層2と、有機半導体層2上に形成された第2の電極7bと、を備えるものである。
次に、本発明の有機薄膜の光センサへの応用を説明する。図9は、第1実施形態に係る光センサの模式断面図である。図9に示す光センサ300は、基板1と、基板1上に形成された第1の電極7aと、第1の電極7a上に形成された重合体を含有する有機薄膜からなる有機半導体層2と、有機半導体層2上に形成された電荷発生層8と、電荷発生層8上に形成された第2の電極7bと、を備えるものである。
まず、下記の実施例及び比較例で行った測定の条件について説明する。
以下に示す化合物A、B及びCの合成を経て、重合体Dを製造した。
出発原料である1,3-ジブロモ-4H-シクロペンタ[c]チオフェン-4,6(5H)-ジオン(下記式で表される化合物A)をKhanh,L.P.;Dallemagne,P.;Rault,S.Synlett,1999,9,1450-1452.の記載を参照して合成した。
100mLナスフラスコに化合物A(300mg,0.97mmol)を入れ、THF(10mL)に溶解させた。これに、1,8-ジアザビシクロ[5,4,0]-ウンデカ-7-エン(0.43mL,2.91mmol)を加え、70℃で15分間撹拌し、さらに臭化アリル(0.25mL,2.91mmol)を加えて70℃で4時間撹拌した。水を加えて反応を停止した後、酢酸エチルで抽出した。有機層を水洗し、溶媒を減圧留去して、固体を得た。得られた固体をカラムクロマトグラフィー(シリカゲル、ヘキサン:酢酸エチル=10:1、容積比)で精製して、下記式で表される化合物B(220mg,収率55%)を淡黄色固体として得た。
1H NMR(400MHz,CDCl3)δ2.52(d,4H,J=7.6Hz),5.01(d,2H,J=10.2),5.08(d,2H,J=17.3Hz),5.50-5.61(m,2H)
MS(EI)m/z 390(M+).
蓋付き試験管に化合物B(122mg,0.313mmol)を入れ、トルエンに溶解させた。これに2-トリブチルスタニルチオフェン(292mg,0.782mmol)を加え、窒素雰囲気下、テトラキス(トリフェニルホスフィン)パラジウム(0)を加え、120℃で12時間撹拌した。その後、カラムクロマトグラフィー(シリカゲル、ヘキサン:酢酸エチル =5:1、容積比)を行うことによって、原料化合物である下記式で表される化合物C(93mg,収率75%)を黄色固体として得た。
1H NMR(400MHz,CDCl3)δ 2.57(d,4H,J=7.6Hz), 4.97(d,2H,J=11.7),5.08(d,2H,J=16.8Hz),5.58-5.68(m,2H),7.14(dd,2H,J=3.6Hz,5.1Hz), 7.45(dd,J=1.2Hz,5.1Hz)8.12(dd,J=1. Hz,3.7 Hz)
MS(EI)m/z396(M+).
蓋付き試験管に化合物C(60mg,0.151mmol)を入れ、ジクロロメタンに溶解させた。これに、下記式で表される化合物E(21mg,0.0038mmol)、及び化合物F(3.3mg,0.0038mmol)を加え、室温で48時間撹拌した。
1H NMR(400MHz,CDCl3)δ0.88-1.33(broad),6.77-7.22(broad),7.26-7.50(broad),7.77-8.16(broad)
<重合体Dの合成2>
室温で48時間攪拌する代わりに、40℃で48時間攪拌を行ったこと以外は、実施例1の重合体Dの合成1と同様にして重合体Dの合成を行った。その結果、ポリスチレン換算の数平均分子量が3800である重合体Dを得た。
<重合体Dの合成3>
化合物Eに代えて、下記式で表される化合物Mを用いたこと以外は、実施例1の重合体Dの合成1と同様にして重合体Dの合成を行った。その結果、ポリスチレン換算の数平均分子量が3200である重合体Dが得られた。
<重合体Dの合成4>
室温で48時間攪拌する代わりに、40℃で48時間攪拌を行ったこと以外は、実施例3の重合体Dの合成3と同様にして重合体Dの合成を行った。その結果、ポリスチレン換算の数平均分子量が3600である重合体Dを得た。
以下に示す化合物G、H、J及びKの合成を経て、重合体Lを製造した。
50mlナスフラスコに化合物A(300mg,0.968mmol)を入れ、ベンゼン(20ml)に溶解させた。これにエチレングリコール(1.08ml、19.36mmol)、p-トルエンスルホン酸一水和物(17mg,0.0968mmol)を入れて100℃で36時間撹拌した。水を加えて反応を停止し、酢酸エチルで抽出した後、水洗した。溶媒を減圧留去した後、カラムクロマトグラフィー(シリカゲル、3/1(容積比) ヘキサン/酢酸エチル)で精製して、下記式で表される化合物G(348mg,収率90 %)を茶色固体として得た。
TLC Rf=0.17(3/1 ヘキサン/酢酸エチル、容積比)
1H NMR(400MHz,CDCl3)δ 2.81(s,2H,),4.05-4.13(m,2H),4.23-4.31(m,2H)
MS(EI)m/z398(M+).
50ml二口ナスフラスコに化合物G(100mg,0.251mmol)を入れ、THFに溶解させた。そこにn-ブチルリチウム(1.6Mヘキサン溶液,0.314ml,0.502mmol)を-78℃で加えた。これを1時間撹拌した後、塩化トリブチルスズ(0.143ml、0.527mmol)を加え、徐々に室温まで昇温した。2時間後、水を加えて反応を停止し、酢酸エチルで抽出した。抽出した有機層を水で洗ってから硫酸マグネシウムで乾燥させた。その後、溶媒を減圧留去し、粗生成物をカラムクロマトグラフィー(アルミナ、10/1(ヘキサン/酢酸エチル、容積比)で精製して、下記式で表される化合物H(112mg,収率55%)を黄色液体として得た。
1H NMR(400MHz,CDCl3)δ0.83-0.93(m,18H),1.01-1.18(m,12H),1.27-1.37(m,12H),1.51-1.67(m,10-H),1.46-1.63(m,12H),2.65(s,2H),3.97-4.03(m,2H),4.06-4.12(m,2H)
MS(EI)m/z818(M+).
化合物H、下記式で表される化合物I及びテトラキス(トリフェニルホスフィン)パラジウム(0)を蓋付き試験管に入れ、トルエンに溶解させる。これを加熱しながら撹拌した後、室温で放冷する。溶媒を減圧留去し、粗生成物をシリカカラムクロマトグラフィーに通してから、GPC(CHCl3)で精製する。
化合物Jを100mLナスフラスコに入れ、THFに溶解させる。これに1,8-ジアザビシクロ[5,4,0]-ウンデカ-7-エンを加え、加熱しながら撹拌し、さらに臭化アリルを加えて加熱しながら撹拌する。水を加えて反応を停止し、酢酸エチルで抽出する。有機層を水洗して、溶媒を減圧留去する。得られた固体をカラムクロマトグラフィー(シリカゲル)で精製して、原料化合物である下記式で表される化合物Kを得ることができる。
蓋付き試験管に化合物Kを入れ、ジクロロメタンに溶解させる。これに、上記の化合物E及び化合物Fを加え、室温で48時間撹拌する。溶媒を減圧留去し、粗生成物をシリカカラムクロマトグラフィー(CHCl3)に通してから、GPC(CHCl3)で精製すると、下記式で表される重合体Lを得ることができる。
<有機薄膜トランジスタの作製及びそのトランジスタ特性の評価>
熱酸化膜(シリコン酸化膜)付の低抵抗シリコンウエハー(ゲート電極/絶縁層となる構造)を、エタノール、蒸留水、アセトンの順でそれぞれに浸漬し、超音波洗浄を行う。その後、このシリコンウエハーをUV-オゾン洗浄して、表面が親水性である基板を得る。この基板を、ヘキサメチルジシラザン:クロロホルムに室温で浸漬し、クロロホルムで超音波洗浄し、表面処理された基板を得る。
Claims (14)
- 式(I)で表される繰り返し単位が、式(I-a)で表される繰り返し単位である、請求項1記載の重合体。
- 前記Z1が、式(ii)で表される基である、請求項2又は3記載の重合体。
- 前記Z2が、式(xii)で表される基である、請求項3又は4記載の重合体。
- 式(III)で表される基が、式(IV)で表される基である、請求項6記載の重合体。
- 式(XI-a)で表される単量体。
- 請求項1~7のいずれか一項に記載の重合体を含む、有機薄膜。
- 請求項10記載の有機薄膜を備える、有機薄膜素子。
- ソース電極及びドレイン電極と、これら電極の間の電流経路となる有機半導体層と、前記電流経路を通る電流量を制御するゲート電極と、を備えた有機薄膜トランジスタであって、
前記有機半導体層が請求項10記載の有機薄膜を備える、有機薄膜トランジスタ。 - 請求項10記載の有機薄膜を備える、有機太陽電池。
- 請求項10記載の有機薄膜を備える、光センサ。
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CN2010800112702A CN102348728A (zh) | 2009-03-11 | 2010-03-08 | 聚合物、使用了该聚合物的有机薄膜和具有其的有机薄膜元件 |
US13/255,681 US20120091437A1 (en) | 2009-03-11 | 2010-03-08 | Polymer, organic thin film comprising the polymer, and organic thin-film element including same |
EP10750790.7A EP2407494A4 (en) | 2009-03-11 | 2010-03-08 | POLYMER, ORGANIC THIN FILM WITH THE POLYMER AND ORGANIC THIN LAYERING ELEMENT THEREOF |
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JP2009-058656 | 2009-03-11 | ||
JP2009058656A JP2010209262A (ja) | 2009-03-11 | 2009-03-11 | 重合体、この重合体を用いた有機薄膜及びこれを備える有機薄膜素子 |
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US (1) | US20120091437A1 (ja) |
EP (1) | EP2407494A4 (ja) |
JP (1) | JP2010209262A (ja) |
KR (1) | KR20110131260A (ja) |
CN (1) | CN102348728A (ja) |
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Cited By (1)
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JP2013107972A (ja) * | 2011-11-21 | 2013-06-06 | Sumitomo Chemical Co Ltd | 化合物及びそれを用いた有機光電変換素子 |
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JP5791995B2 (ja) * | 2011-08-02 | 2015-10-07 | 株式会社Adeka | 新規化合物、光電変換材料及び光電変換素子 |
CN105374938B (zh) * | 2014-08-12 | 2018-01-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | 一种场效应有机太阳能电池及其制备方法 |
WO2019191482A1 (en) * | 2018-03-30 | 2019-10-03 | Becton, Dickinson And Company | Water-soluble polymeric dyes having pendant chromophores |
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- 2009-03-11 JP JP2009058656A patent/JP2010209262A/ja not_active Withdrawn
-
2010
- 2010-03-08 US US13/255,681 patent/US20120091437A1/en not_active Abandoned
- 2010-03-08 KR KR1020117023209A patent/KR20110131260A/ko not_active Application Discontinuation
- 2010-03-08 CN CN2010800112702A patent/CN102348728A/zh active Pending
- 2010-03-08 WO PCT/JP2010/053797 patent/WO2010104037A1/ja active Application Filing
- 2010-03-08 EP EP10750790.7A patent/EP2407494A4/en not_active Withdrawn
- 2010-03-11 TW TW099107049A patent/TW201041918A/zh unknown
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JP2013107972A (ja) * | 2011-11-21 | 2013-06-06 | Sumitomo Chemical Co Ltd | 化合物及びそれを用いた有機光電変換素子 |
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KR20110131260A (ko) | 2011-12-06 |
EP2407494A4 (en) | 2013-05-15 |
JP2010209262A (ja) | 2010-09-24 |
TW201041918A (en) | 2010-12-01 |
EP2407494A1 (en) | 2012-01-18 |
US20120091437A1 (en) | 2012-04-19 |
CN102348728A (zh) | 2012-02-08 |
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