WO2016136425A1 - フッ素原子含有重合体及びその利用 - Google Patents
フッ素原子含有重合体及びその利用 Download PDFInfo
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- WO2016136425A1 WO2016136425A1 PCT/JP2016/053447 JP2016053447W WO2016136425A1 WO 2016136425 A1 WO2016136425 A1 WO 2016136425A1 JP 2016053447 W JP2016053447 W JP 2016053447W WO 2016136425 A1 WO2016136425 A1 WO 2016136425A1
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- MXQOYLRVSVOCQT-UHFFFAOYSA-N palladium;tritert-butylphosphane Chemical compound [Pd].CC(C)(C)P(C(C)(C)C)C(C)(C)C.CC(C)(C)P(C(C)(C)C)C(C)(C)C MXQOYLRVSVOCQT-UHFFFAOYSA-N 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 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
- 238000005191 phase separation Methods 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004344 phenylpropyl group Chemical group 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- WRHZVMBBRYBTKZ-UHFFFAOYSA-N pyrrole-2-carboxylic acid Chemical compound OC(=O)C1=CC=CN1 WRHZVMBBRYBTKZ-UHFFFAOYSA-N 0.000 description 1
- 150000003233 pyrroles Chemical class 0.000 description 1
- WPPDXAHGCGPUPK-UHFFFAOYSA-N red 2 Chemical group C1=CC=CC=C1C(C1=CC=CC=C11)=C(C=2C=3C4=CC=C5C6=CC=C7C8=C(C=9C=CC=CC=9)C9=CC=CC=C9C(C=9C=CC=CC=9)=C8C8=CC=C(C6=C87)C(C=35)=CC=2)C4=C1C1=CC=CC=C1 WPPDXAHGCGPUPK-UHFFFAOYSA-N 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 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
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- CGFYHILWFSGVJS-UHFFFAOYSA-N silicic acid;trioxotungsten Chemical compound O[Si](O)(O)O.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 CGFYHILWFSGVJS-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 1
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 description 1
- 229910001637 strontium fluoride Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 125000006488 t-butyl benzyl group Chemical group 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000005951 trifluoromethanesulfonyloxy group Chemical group 0.000 description 1
- 125000000876 trifluoromethoxy group Chemical group FC(F)(F)O* 0.000 description 1
- 125000006493 trifluoromethyl benzyl group Chemical group 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- XSVXWCZFSFKRDO-UHFFFAOYSA-N triphenyl-(3-triphenylsilylphenyl)silane Chemical compound C1=CC=CC=C1[Si](C=1C=C(C=CC=1)[Si](C=1C=CC=CC=1)(C=1C=CC=CC=1)C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 XSVXWCZFSFKRDO-UHFFFAOYSA-N 0.000 description 1
- DETFWTCLAIIJRZ-UHFFFAOYSA-N triphenyl-(4-triphenylsilylphenyl)silane Chemical compound C1=CC=CC=C1[Si](C=1C=CC(=CC=1)[Si](C=1C=CC=CC=1)(C=1C=CC=CC=1)C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 DETFWTCLAIIJRZ-UHFFFAOYSA-N 0.000 description 1
- HITRWHKLCHWBNZ-UHFFFAOYSA-N triphenyl-[4-(9-phenylfluoren-9-yl)phenyl]silane Chemical compound C1=CC=CC=C1C1(C=2C=CC(=CC=2)[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)C2=CC=CC=C2C2=CC=CC=C21 HITRWHKLCHWBNZ-UHFFFAOYSA-N 0.000 description 1
- RFDGVZHLJCKEPT-UHFFFAOYSA-N tris(2,4,6-trimethyl-3-pyridin-3-ylphenyl)borane Chemical compound CC1=C(B(C=2C(=C(C=3C=NC=CC=3)C(C)=CC=2C)C)C=2C(=C(C=3C=NC=CC=3)C(C)=CC=2C)C)C(C)=CC(C)=C1C1=CC=CN=C1 RFDGVZHLJCKEPT-UHFFFAOYSA-N 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 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
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 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
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C217/00—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton
- C07C217/76—Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings and etherified hydroxy groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C25/00—Compounds containing at least one halogen atom bound to a six-membered aromatic ring
- C07C25/18—Polycyclic aromatic halogenated hydrocarbons
- C07C25/22—Polycyclic aromatic halogenated hydrocarbons with condensed rings
-
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
- C07C43/14—Unsaturated ethers
- C07C43/17—Unsaturated ethers containing halogen
- C07C43/174—Unsaturated ethers containing halogen containing six-membered aromatic rings
- C07C43/1745—Unsaturated ethers containing halogen containing six-membered aromatic rings having more than one ether bound
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- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
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- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/025—Boronic and borinic acid compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G61/12—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
- C07C2603/06—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members
- C07C2603/10—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members containing five-membered rings
- C07C2603/12—Ortho- or ortho- and peri-condensed systems containing three rings containing at least one ring with less than six ring members containing five-membered rings only one five-membered ring
- C07C2603/18—Fluorenes; Hydrogenated fluorenes
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/10—Definition of the polymer structure
- C08G2261/14—Side-groups
- C08G2261/142—Side-chains containing oxygen
- C08G2261/1424—Side-chains containing oxygen containing ether groups, including alkoxy
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/10—Definition of the polymer structure
- C08G2261/14—Side-groups
- C08G2261/146—Side-chains containing halogens
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/10—Definition of the polymer structure
- C08G2261/19—Definition of the polymer structure partially conjugated
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/31—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain
- C08G2261/314—Condensed aromatic systems, e.g. perylene, anthracene or pyrene
- C08G2261/3142—Condensed aromatic systems, e.g. perylene, anthracene or pyrene fluorene-based, e.g. fluorene, indenofluorene, or spirobifluorene
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/31—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain
- C08G2261/316—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain bridged by heteroatoms, e.g. N, P, Si or B
- C08G2261/3162—Arylamines
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- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/34—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain
- C08G2261/342—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain containing only carbon atoms
- C08G2261/3424—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain containing only carbon atoms non-conjugated, e.g. paracyclophanes or xylenes
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
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- C08G2261/411—Suzuki reactions
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- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/50—Physical properties
- C08G2261/51—Charge transport
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- C08G2261/51—Charge transport
- C08G2261/512—Hole transport
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- C08G2261/90—Applications
- C08G2261/95—Use in organic luminescent diodes
Definitions
- the present invention relates to a fluorine atom-containing polymer and use thereof.
- a charge transporting thin film is used for the organic electroluminescence (EL) element.
- the method for forming the charge transporting thin film is roughly divided into a dry process typified by vapor deposition and a wet process typified by spin coating. These methods are appropriately used depending on the area of the thin film to be formed and the solubility of the material to be thinned in the organic solvent.
- the present invention has been made in view of the above circumstances, and for forming a thin film capable of realizing an organic EL element having excellent luminance characteristics even when used as a single layer between an anode and a light emitting layer in contact with them.
- the purpose is to provide material.
- a predetermined fluorine atom-containing polymer has excellent solubility in an organic solvent, and charge transportability comprising the fluorine atom-containing polymer.
- a thin film obtained from a substance, a charge transporting substance containing no fluorine atom, a dopant made of a heteropoly acid, and a charge transporting varnish containing an organic solvent is used as a single layer in a form in contact with the anode and the light emitting layer.
- the present inventors have found that an organic EL device having excellent luminance characteristics can be obtained even when the present invention is present.
- a fluorine atom containing polymer characterized by being a condensation polymer of [Wherein R 1 and R 2 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or 6 to 20 carbon atoms.
- An aryl group having 2 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an alkenyloxy group having 2 to 20 carbon atoms, an alkynyloxy group having 2 to 20 carbon atoms, and an aryl having 6 to 20 carbon atoms Represents an oxy group, a heteroaryloxy group having 2 to 20 carbon atoms, or an alkyl group having 2 to 20 carbon atoms containing at least one ether structure (provided that at least one of R 1 and R 2 represents the alkyl group or alkoxy group)
- R 3 and R 4 each independently represents a non-conjugated divalent organic group
- R 5 represents a hydrogen atom, or an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atom
- R 6 is an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or an alkyl group having 1 to 20 carbon atoms in which at least one hydrogen atom is substituted with a fluorine atom.
- Alkoxy group, alkenyloxy group having 2-20 carbon atoms, alkynyloxy group having 2-20 carbon atoms, aryl group having 6-20 carbon atoms, aralkyl group having 7-20 carbon atoms, alkylaralkyl group having 8-20 carbon atoms Represents a heteroaryl group having 2 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms or a heteroaryloxy group having 2 to 20 carbon atoms; R each independently represents a halogen atom, a nitro group, a cyano group, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an alkyl group having 2 to 20 carbon atoms which may be substituted with Z 1 .
- Z 1 is a halogen atom, a nitro group, a cyano group, or an aryl group having 6 to 20 carbon atoms, a heteroaryl group having 2 to 20 carbon atoms, or an alkoxy having 1 to 20 carbon atoms, which may be substituted with Z 3.
- Z 2 is a halogen atom, a nitro group, a cyano group, or an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an alkynyl group having 2 to 20 carbon atoms, which may be substituted with Z 3.
- Z 3 represents a halogen atom, a nitro group or a cyano group
- p and q each independently represents 0 or 1.
- R 3 and R 4 are —R c —Ar— (wherein R c represents an alkylene group having 1 to 20 carbon atoms, and Ar represents an arylene group having 6 to 20 carbon atoms).
- R 5 is an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or an alkyl group having 1 to 20 carbon atoms in which at least one hydrogen atom is substituted with a fluorine atom.
- Alkoxy group alkenyloxy group having 2-20 carbon atoms, alkynyloxy group having 2-20 carbon atoms, aryl group having 6-20 carbon atoms, aralkyl group having 7-20 carbon atoms, alkylaralkyl group having 8-20 carbon atoms
- Any one of 1 to 4 polymers which is a heteroaryl group having 2 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, or a heteroaryloxy group having 2 to 20 carbon atoms; 6.
- a charge transporting material comprising the polymer according to any one of 1 to 5.
- a charge transporting varnish comprising a charge transporting material of 7.6, a charge transporting material containing no fluorine atom, a dopant comprising a heteropolyacid, and an organic solvent. 8). 7. The charge transporting varnish according to 7, wherein the charge transporting material containing no fluorine atom is an aniline derivative.
- a charge transporting thin film produced using a charge transporting varnish of 9.7 or 8.
- An electronic device having a charge transporting thin film of 10.9.
- An organic electroluminescence device having a charge transporting thin film of 11.9.
- a method for producing a charge transporting thin film comprising applying a charge transporting varnish of 12.7 or 8 onto a substrate and evaporating a solvent.
- a fluorene derivative represented by the following formula (1 ′), a fluorene derivative represented by the following formula (2 ′), and a fluorene derivative represented by the following formula (3 ′) are subjected to condensation polymerization.
- R 1 to R 6 , R, p and q are the same as above.
- X A each independently represents a halogen atom or a pseudohalogen group.
- X B independently represents a group represented by the following formula (4) or (5).
- a 1 and A 2 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms.
- a 3 represents an alkanediyl having 1 to 20 carbon atoms.
- a fluorene derivative represented by the following formula. (Wherein R 1 ′ and R 2 ′ represent an alkyl group having 2 to 20 carbon atoms and containing at least one ether structure; p and q each independently represents 0 or 1. ] 15.
- a fluorene derivative represented by the following formula. wherein R 1 ′ and R 2 ′ represent an alkyl group having 2 to 20 carbon atoms and containing at least one ether structure; X A each independently represents a halogen atom or a pseudohalogen group; p and q each independently represents 0 or 1. ] 16.
- X B independently represents a group represented by the following formula (4) or (5).
- a 1 and A 2 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms.
- a 3 represents an alkanediyl having 1 to 20 carbon atoms.
- a group or an arylene group having 6 to 20 carbon atoms A fluorene derivative represented by the following formula.
- X independently represents a halogen atom, a pseudohalogen group, or a group represented by the following formula (4) or (5).
- a 1 and A 2 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms.
- a 3 represents an alkanediyl having 1 to 20 carbon atoms.
- a group or an arylene group having 6 to 20 carbon atoms)]
- the fluorine atom-containing polymer of the present invention can be suitably used as a charge transporting substance, and the thin film as a single layer is formed between the anode and the light emitting layer by using the charge transporting varnish of the present invention containing the polymer. Even when formed, an organic EL element having excellent luminance characteristics can be realized. The reason for this is not clear, but the charge transporting substance containing fluorine atoms easily migrates to the surface side of the thin film (light emitting layer side), so the charge transporting substance containing fluorine atoms is on the surface side of the thin film (light emitting layer side).
- a charge transporting material not containing them is unevenly distributed on the back side (anode side) of the thin film, phase-separated into a hole injection site and a hole transport site within a single layer, and is positively directed from the anode toward the light emitting layer.
- the hole injecting component functions as a hole injecting and transporting layer similar to the case where these two layers exist.
- the functional multilayer film in the device can be formed into a single film by using the charge transporting varnish of the present invention, it is possible to increase the yield and cost by simplifying the manufacturing process conditions, or the device. Can be made lighter and more compact.
- the charge transport varnish of the present invention can produce a thin film excellent in charge transport with good reproducibility even when using various wet processes capable of forming a film over a large area such as a spin coat method and a slit coat method. Therefore, it can sufficiently cope with recent progress in the field of organic EL.
- the thin film obtained from the charge transporting varnish of the present invention can be used as an antistatic film, an anode buffer layer of an organic thin film solar cell, or the like.
- the fluorine atom-containing polymer of the present invention includes a fluorene derivative that gives a repeating unit represented by the following formula (1), a fluorene derivative that gives a repeating unit represented by the following formula (2), and the following formula (3): It is a condensation polymer with the fluorene derivative which gives the repeating unit represented.
- R 1 and R 2 are each independently a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or a carbon number of 6
- at least one of R 1 and R 2 is the alkyl group, alkoxy group, alkenyloxy group, alkynyloxy group, aryloxy group, heteroaryloxy group or an alkyl group including at least one ether structure.
- the alkyl group having 1 to 20 carbon atoms may be linear, branched or cyclic, and specific examples thereof include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group and an isobutyl group.
- Straight chain having 1 to 20 carbon atoms such as s-butyl group, t-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group and n-decyl group Or a branched alkyl group; cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, cyclononyl group, cyclodecyl group, bicyclobutyl group, bicyclopentyl group, bicyclohexyl group, bicycloheptyl group, Examples thereof include cyclic alkyl groups having 3 to 20 carbon atoms such as a bicyclooctyl group, a bicyclononyl group, and a bicyclodecyl group.
- the alkenyl group having 2 to 20 carbon atoms may be linear, branched or cyclic, and specific examples thereof include ethenyl group, n-1-propenyl group, n-2-propenyl group and 1-methylethenyl group.
- the alkynyl group having 2 to 20 carbon atoms may be linear, branched or cyclic, and specific examples thereof include ethynyl group, n-1-propynyl group, n-2-propynyl group, n-1- Butynyl group, n-2-butynyl group, n-3-butynyl group, 1-methyl-2-propynyl group, n-1-pentynyl group, n-2-pentynyl group, n-3-pentynyl group, n-4 -Pentynyl group, 1-methyl-n-butynyl group, 2-methyl-n-butynyl group, 3-methyl-n-butynyl group, 1,1-dimethyl-n-propynyl group, n-1-hexynyl group, n Examples include a -1-decynyl group, an n-1-pentadecynyl group, and
- aryl group having 6 to 20 carbon atoms include phenyl group, 1-naphthyl group, 2-naphthyl group, 1-anthryl group, 2-anthryl group, 9-anthryl group, 1-phenanthryl group, 2-phenanthryl group. Group, 3-phenanthryl group, 4-phenanthryl group, 9-phenanthryl group and the like.
- heteroaryl group having 2 to 20 carbon atoms examples include 2-thienyl group, 3-thienyl group, 2-furanyl group, 3-furanyl group, 2-oxazolyl group, 4-oxazolyl group, 5-oxazolyl group, 3-isoxazolyl group, 4-isoxazolyl group, 5-isoxazolyl group, 2-thiazolyl group, 4-thiazolyl group, 5-thiazolyl group, 3-isothiazolyl group, 4-isothiazolyl group, 5-isothiazolyl group, 2-imidazolyl group, Examples include 4-imidazolyl group, 2-pyridyl group, 3-pyridyl group, 4-pyridyl group, and the like.
- the alkoxy group having 1 to 20 carbon atoms may be linear, branched or cyclic, and specific examples thereof include methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group.
- the alkenyloxy group having 2 to 20 carbon atoms may be linear, branched or cyclic, and specific examples thereof include ethenyloxy group, n-1-propenyloxy group, n-2-propenyloxy group, -Methylethenyloxy group, n-1-butenyloxy group, n-2-butenyloxy group, n-3-butenyloxy group, 2-methyl-1-propenyloxy group, 2-methyl-2-propenyloxy group, 1- Ethylethenyloxy group, 1-methyl-1-propenyloxy group, 1-methyl-2-propenyloxy group, n-1-pentenyloxy group, n-1-decenyloxy group, n-1-eicocenyloxy group Etc.
- the alkynyloxy group having 2 to 20 carbon atoms may be linear, branched or cyclic, and specific examples thereof include ethynyloxy group, n-1-propynyloxy group, n-2-propynyloxy group, n-1-butynyloxy group, n-2-butynyloxy group, n-3-butynyloxy group, 1-methyl-2-propynyloxy group, n-1-pentynyloxy group, n-2-pentynyloxy group, n -3-pentynyloxy group, n-4-pentynyloxy group, 1-methyl-n-butynyloxy group, 2-methyl-n-butynyloxy group, 3-methyl-n-butynyloxy group, 1,1-dimethyl- n-propynyloxy group, n-1-hexynyloxy group, n-1-decynyloxy group, n-1
- aryloxy group having 6 to 20 carbon atoms include phenyloxy group, 1-naphthyloxy group, 2-naphthyloxy group, 1-anthryloxy group, 2-anthryloxy group, 9-anthryloxy Group, 1-phenanthryloxy group, 2-phenanthryloxy group, 3-phenanthryloxy group, 4-phenanthryloxy group, 9-phenanthryloxy group and the like.
- heteroaryloxy group having 2 to 20 carbon atoms include 2-thienyloxy group, 3-thienyloxy group, 2-furanyloxy group, 3-furanyloxy group, 2-oxazolyloxy group, 4-oxazolyl Ruoxy group, 5-oxazolyloxy group, 3-isoxazolyloxy group, 4-isoxazolyloxy group, 5-isoxazolyloxy group, 2-thiazolyloxy group, 4-thiazolyloxy group, 5 -Thiazolyloxy group, 3-isothiazolyloxy group, 4-isothiazolyloxy group, 5-isothiazolyloxy group, 2-imidazolyloxy group, 4-imidazolyloxy group, 2-pyridyloxy group, 3-pyridyloxy group Group, 4-pyridyloxy group and the like.
- Examples of the alkyl group having 2 to 20 carbon atoms containing at least one ether structure include a linear or branched alkyl group in which at least one methylene group is substituted with an oxygen atom.
- the methylene group bonded to the fluorene skeleton is not substituted with an oxygen atom, and the adjacent methylene group is not substituted with an oxygen atom at the same time.
- Such a group is preferably a group represented by the formula (A) in view of availability of the raw material compound, and among these, a group represented by the formula (B) is more preferable. .
- R A represents a linear or branched alkylene group having 1 to 4 carbon atoms
- R B represents a linear or branched chain having 1 to [20- (the number of carbons of R A ) ⁇ r]
- r is an integer of 1 to 9.
- r is preferably 2 or more, more preferably 3 or more, and the availability of the raw material compound From the viewpoint, it is preferably 5 or less, more preferably 4 or less.
- alkyl group having 2 to 20 carbon atoms including at least one ether structure examples include —CH 2 OCH 3 , —CH 2 OCH 2 CH 3 , —CH 2 O (CH 2 ) 2 CH 3 , —CH 2 OCH (CH 3 ) 2 , -CH 2 O (CH 2 ) 3 CH 3 , -CH 2 OCH 2 CH (CH 3 ) 2 , -CH 2 OC (CH 3 ) 3 , -CH 2 O (CH 2 ) 4 CH 3 , -CH 2 OCH (CH 3 ) (CH 2 ) 2 CH 3 , -CH 2 O (CH 2 ) 2 CH (CH 3 ) 2 , -CH 2 OCH (CH 3 ) (CH 2 ) 3 CH 3 , -CH 2 O (CH 2 ) 5 CH 3 , -CH 2 OCH 2 CH (CH 3 ) (CH 2 ) 2 CH 3 , -CH 2 O (CH 2 ) 2 CH (CH 3 ) CH 2 CH 3 ,
- R 1 and R At least one of 2 is the alkyl group, alkoxy group, alkenyloxy group, alkynyloxy group, aryloxy group, heteroaryloxy group, or an alkyl group containing at least one ether structure.
- One of the groups is the alkyl group, alkoxy group, alkenyloxy group, alkynyloxy group, aryloxy group, heteroaryloxy group, or an alkyl group containing at least one ether structure.
- R 1 and R 2 contains an alkyl group or at least one ether structure
- R 1 and R 2 are both preferably an alkyl group having 2 to 20 carbon atoms containing at least one ether structure.
- p and q each independently represent 0 or 1, but from the viewpoint of ease of synthesis of the compound, both p and q are preferably 0 or 1.
- R 3 and R 4 each independently represents a non-conjugated divalent organic group.
- the non-conjugated divalent organic group is not particularly limited, but from the viewpoint of polymerizability, —R c —Ar— (wherein R c represents an alkylene group having 1 to 20 carbon atoms, Ar Represents an arylene group having 6 to 20 carbon atoms).
- non-conjugated divalent organic group examples include, but are not limited to, the following groups.
- R 5 represents a hydrogen atom, or an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or a carbon number in which at least one hydrogen atom may be substituted with a fluorine atom.
- R 5 represents an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, or an alkyl group having 1 to 20 carbon atoms in which at least one hydrogen atom is substituted with a fluorine atom.
- Alkoxy group alkenyloxy group having 2-20 carbon atoms, alkynyloxy group having 2-20 carbon atoms, aryl group having 6-20 carbon atoms, aralkyl group having 7-20 carbon atoms, alkylaralkyl group having 8-20 carbon atoms And a heteroaryl group having 2 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, or a heteroaryloxy group having 2 to 20 carbon atoms.
- R 6 represents an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, wherein at least one hydrogen atom is substituted with a fluorine atom,
- An alkoxy group having 1 to 20 carbon atoms, an alkenyloxy group having 2 to 20 carbon atoms, an alkynyloxy group having 2 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, and 8 carbon atoms Represents an alkylaralkyl group having 20 carbon atoms, a heteroaryl group having 2-20 carbon atoms, an aryloxy group having 6-20 carbon atoms, or a heteroaryloxy group having 2-20 carbon atoms.
- aralkyl group having 7 to 20 carbon atoms examples include benzyl group, phenylethyl group, phenylpropyl group, naphthylmethyl group, naphthylethyl group, naphthylpropyl group, and the like.
- alkyl aralkyl group having 8 to 20 carbon atoms include methylbenzyl group, ethylbenzyl group, n-propylbenzyl group, isopropylbenzyl group, n-butylbenzyl group, isobutylbenzyl group, s-butylbenzyl group, t -Butylbenzyl group, n-pentylbenzyl group, n-hexylbenzyl group, n-heptylbenzyl group, n-octylbenzyl group, n-nonylbenzyl group, n-decylbenzyl group, methylphenylethyl group, ethylphenylethyl group N-propylphenylethyl group, isopropylphenylethyl group, n-butylphenylethyl group, isobutylphenylethyl group, s-
- an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an alkyl having 8 to 20 carbon atoms in which at least one hydrogen atom is substituted with a fluorine atom Aralkyl groups and the like are preferable.
- a fluorine atom-containing group is provided outside the conjugated system, the electronic state of the polymer is not affected. Therefore, the number of carbon atoms in which at least one hydrogen atom in the alkyl part is substituted with a fluorine atom is 8
- An alkylaralkyl group of ⁇ 20 is preferred.
- trifluoromethyl group 2,2,2-trifluoroethyl group, pentafluoroethyl group, 2,2,3,3-tetrafluoropropyl group, 2,2,3,3,3-penta Fluoropropyl group, heptafluoropropyl group, 2,2,2-trifluoro-1- (trifluoromethyl) ethyl group, nonafluorobutyl group, 4,4,4-trifluorobutyl group, undecafluoropentyl group, 2,2,3,3,4,4,5,5,5-nonafluoropentyl group, 2,2,3,3,4,4,5,5-octafluoropentyl group, tridecafluorohexyl group, 2,2,3,3,4,4,5,5,6,6,6-undecafluorohexyl group 2,2,3,3,4,4,5,5,6,6-deca Fluorohexyl group, 3,3,4,4,5,5,6,6,6-nonafluorohexyl
- each R independently represents a halogen atom, a nitro group, a cyano group, an alkyl group having 1 to 20 carbon atoms which may be substituted with Z 1 , or 2 to 20 carbon atoms.
- Z 1 is a halogen atom, a nitro group, a cyano group, or an aryl group having 6 to 20 carbon atoms, a heteroaryl group having 2 to 20 carbon atoms, or an alkoxy having 1 to 20 carbon atoms, which may be substituted with Z 3.
- Z 2 is a halogen atom, a nitro group, a cyano group, or an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an alkynyl group having 2 to 20 carbon atoms, which may be substituted with Z 3.
- Z 3 represents a halogen atom, a nitro group or a cyano group.
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- R is preferably a hydrogen atom, a halogen atom, a nitro group, a cyano group or an alkyl group having 1 to 20 carbon atoms which may be substituted with Z 1 , and a hydrogen atom, a fluorine atom or a carbon which may be substituted with Z 1
- An alkyl group having 1 to 4 is more preferable, and a hydrogen atom is most preferable.
- the ratio of the repeating unit represented by the formula (1) in the polymer to the repeating unit represented by the formula (2) and the repeating unit represented by the formula (3) is a molar ratio.
- the total of the repeating unit represented by the formula (2) and the repeating unit represented by the formula (3) is about 1 to 4 with respect to the repeating unit 1 represented by the formula (1).
- the ratio of the repeating unit represented by the formula (2) in the polymer to the repeating unit represented by the formula (3) is represented by the formula (2).
- the repeating unit represented by the formula (3) is preferably about 0.7 to 1.3, more preferably about 0.8 to 1.2, and still more preferably about 0.1 to 1. It is about 9 to 1.1.
- the lower limit of the weight average molecular weight (Mw) of the fluorine atom-containing polymer of the present invention is preferably 1,000, more preferably 5,000, and still more preferably 10 from the viewpoint of improving the charge transport property of the polymer.
- the upper limit is preferably 200,000, more preferably 150,000, and still more preferably 100,000 from the viewpoint of improving the solubility of the polymer.
- Mw and number average molecular weight (Mn) are weight average molecular weights in terms of polystyrene measured by gel permeation chromatography (GPC).
- the fluorine atom-containing polymer of the present invention is represented by a fluorene derivative that gives a repeating unit represented by the formula (1), a fluorene derivative that gives a repeating unit represented by the formula (2), and a formula (3). It can be synthesized by condensation polymerization with a fluorene derivative giving a repeating unit.
- a fluorene derivative represented by the formula (1 ′), a fluorene derivative represented by the formula (2 ′), a fluorene derivative represented by the formula (3 ′), and It can be synthesized by the coupling reaction of Hereinafter, the case of synthesizing by the Suzuki-Miyaura coupling reaction will be described as an example.
- R 1 to R 6 , R, p and q are the same as described above.
- X A each independently represents a halogen atom or a pseudohalogen group.
- X B independently represents a group represented by the following formula (4) or (5).
- a 1 and A 2 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms.
- a 3 represents an alkanediyl having 1 to 20 carbon atoms. Represents a group or an arylene group having 6 to 20 carbon atoms.
- halogen atom alkyl group and aryl group are the same as those described above.
- pseudohalogen group examples include fluoroalkylsulfonyloxy groups such as methanesulfonyloxy group, trifluoromethanesulfonyloxy group, and nonafluorobutanesulfonyloxy group; aromatic sulfonyloxy groups such as benzenesulfonyloxy group and toluenesulfonyloxy group, and the like. It is done.
- alkanediyl group having 1 to 20 carbon atoms examples include methylene group, ethylene group, propane-1,2-diyl group, propane-1,3-diyl group, 2,2-dimethylpropane-1,3-diyl group, 2-ethyl-2-methylpropane-1,3-diyl group, 2,2-diethylpropane-1,3-diyl group, 2-methyl-2-propylpropane-1,3-diyl group, butane-1, 3-diyl group, butane-2,3-diyl group, butane-1,4-diyl group, 2-methylbutane-2,3-diyl group, 2,3-dimethylbutane-2,3-diyl group, pentane- 1,3-diyl group, pentane-1,5-diyl group, pentane-2,3-diyl group, pentane-2,4-diyl group
- Examples of the arylene group having 6 to 20 carbon atoms include 1,2-phenylene group, 1,2-naphthylene group, 2,3-naphthylene group, 1,8-naphthylene group, 1,2-anthrylene group, 2,3 -Anthrylene group, 1,2-phenanthrylene group, 3,4-phenanthrylene group, 9,10-phenanthrylene group and the like.
- the condensation reaction can be performed without a solvent, but is usually performed using a solvent. Any solvent can be used as long as it does not inhibit the reaction. Examples thereof include cyclic ethers such as tetrahydrofuran and 1,4-dioxane; N, N-dimethylformamide (DMF), N, N-dimethylacetamide (DMAc ), Amides such as N-methyl-2-pyrrolidone (NMP); ketones such as methyl isobutyl ketone and cyclohexanone; halogenated hydrocarbons such as methylene chloride, chloroform, 1,2-dichloroethane and chlorobenzene; benzene, toluene, xylene and the like And aromatic hydrocarbons. These solvents can be used alone or in combination of two or more. Of these, 1,4-dioxane, toluene, xylene and the like are particularly preferable.
- Examples of the catalyst used in the condensation reaction include [1,1′-bis (diphenylphosphino) ferrocene] palladium (II) dichloride (PdCl 2 (dppf)), tetrakis (triphenylphosphine) palladium (Pd (PPh 3 ) 4 ), Bis (triphenylphosphine) dichloropalladium (Pd (PPh 3 ) 2 Cl 2 ), bis (benzylideneacetone) palladium (Pd (dba) 2 ), tris (benzylideneacetone) dipalladium (Pd 2 (dba) 3 )
- palladium catalysts such as bis (tri-t-butylphosphine) palladium (Pd (Pt-Bu 3 ) 2 ) and palladium (II) acetate (Pd (OAc) 2 ).
- the charging ratio of the fluorene derivative represented by the formula (1 ′), the fluorene derivative represented by the formula (2 ′), and the fluorene derivative represented by (3 ′) is a molar ratio, and the formula (1 ′
- the total number of moles of the fluorene derivative represented by the formula (2 ′) and the fluorene derivative represented by (3 ′) is preferably about 0.7 to 1.3 with respect to the fluorene derivative 1 represented by It is more preferably about 0.8 to 1.2.
- the reaction temperature during the condensation is usually 40 to 200 ° C.
- the reaction time is variously selected depending on the reaction temperature, but is usually about 30 minutes to 50 hours.
- the fluorene derivative represented by the formula (1 ′) can be synthesized using a compound represented by the following formula (6) as a starting material.
- a compound represented by formula (6), a compound represented by formula (7-1), and a compound represented by formula (7-2) are reacted.
- an intermediate represented by the formula (8) is synthesized.
- X A , X B , R 1 , R 2 and R are the same as described above.
- the charge ratio of the compound represented by Formula (6), the compound represented by Formula (7-1), and the compound represented by Formula (7-2) is: In terms of molar ratio, the compound represented by formula (7-1) and the compound represented by (7-2) are about 1 to 3 with respect to compound 1 represented by formula (6).
- Examples of the solvent used in the reaction represented by Scheme B include dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylacetamide, tetrahydrofuran, dioxane, acetonitrile, toluene and the like.
- Dimethyl sulfoxide is preferred because the starting compound is well dissolved and the reaction proceeds smoothly.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 100 ° C.
- the reaction time is usually 0.1 to 100 hours.
- the fluorene derivative represented by the formula (1 ′) in which p and q are 0 is obtained by reacting the intermediate represented by the formula (8) with the compound represented by the formula (9) in the presence of a catalyst.
- the intermediate represented by (10) can be synthesized (Scheme C) and further halogenated using a halogenating agent (Scheme D).
- the charge ratio of the compound represented by Formula (8) and the compound represented by Formula (9) is a molar ratio with respect to Compound 1 represented by Formula (8).
- the number of compounds represented by formula (9) is about 2 to 4.
- Examples of the catalyst used in the reaction represented by Scheme C include the palladium catalyst described above.
- Examples of the solvent used in the reaction represented by Scheme C include toluene, dioxane, N, N-dimethylformamide, N, N-dimethylacetamide and the like. From the viewpoint of reactivity, toluene, dioxane and the like are preferable.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 140 ° C.
- the reaction time is usually 0.1 to 100 hours.
- a known halogenating agent can be used, and specific examples include N-bromosuccinimide and the like.
- the amount of the halogenating agent used is about 4 to 6 with respect to the compound 1 represented by the formula (10) in molar ratio.
- Examples of the solvent used in the reaction represented by Scheme D include dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylacetamide, tetrahydrofuran, dioxane, acetonitrile, toluene, chloroform and the like.
- Dimethyl sulfoxide, N, N-dimethylformamide, chloroform and the like are preferred because the raw material compound is well dissolved and the reaction proceeds smoothly.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 140 ° C.
- the reaction time is usually 0.1 to 100 hours.
- a fluorene derivative represented by the formula (1 ′) in which p and q are 1 is obtained by reacting a compound represented by the formula (11) with a compound represented by the formula (12) in the presence of a catalyst. 13) After synthesizing the intermediate represented by (13) (Scheme E), the intermediate represented by Formula (8) and the intermediate represented by Formula (13) are reacted in the presence of a catalyst to obtain Formula (14). ) Is synthesized (Scheme F) and further halogenated using a halogenating agent (Scheme G).
- the charge ratio of the compound represented by Formula (11) and the compound represented by Formula (12) is a molar ratio with respect to Compound 1 represented by Formula (11).
- the number of compounds represented by formula (12) is about 1 to 3.
- Examples of the catalyst used in the reaction of Scheme E include the palladium catalyst described above.
- Examples of the solvent used in the reaction of Scheme E include dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylacetamide, tetrahydrofuran, dioxane, acetonitrile, toluene and the like. From the viewpoints of solubility and reactivity of the raw material compound, dioxane is preferred.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 100 ° C.
- the reaction time is usually 0.1 to 100 hours.
- the charge ratio of the compound represented by Formula (8) and the compound represented by Formula (13) is a molar ratio with respect to Compound 1 represented by Formula (8).
- the number of compounds represented by formula (13) is about 2 to 4.
- Examples of the catalyst used in the reaction of Scheme F include those described in the reaction represented by Scheme C.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 140 ° C.
- the reaction time is usually 0.1 to 100 hours.
- Examples of the halogenating agent and the solvent used in the reaction represented by Scheme G include the same as those described in the reaction represented by Scheme D.
- the amount of the halogenating agent used is about 4 to 6 with respect to the compound 1 represented by the formula (14) in terms of molar ratio.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 140 ° C.
- the reaction time is usually 0.1 to 100 hours.
- the target compound After completion of the reaction represented by each of the above schemes, it may be used as it is in the next step without being purified, or may be purified.
- the target compound When purifying, the target compound can be obtained according to a conventional method.
- the fluorene derivative represented by the formula (2 ′) is obtained by reacting the compound represented by the formula (15) with the compounds represented by the formulas (16-1) and (16-2). After synthesizing the represented intermediate (Scheme H), it can be synthesized by reacting this with the compound represented by Formula (12) in the presence of a catalyst (Scheme I).
- a fluorene derivative represented by the formula (2 ′′) is obtained by reacting a compound represented by the formula (15) with a compound represented by the formula (16-1 ′). After synthesizing the intermediate represented by (17 ′) (Scheme H ′), it can be synthesized by reacting this with the compound represented by Formula (12) in the presence of a catalyst (Scheme I).
- Ar, X A , X B , R c , R 3 and R 4 are the same as described above.
- the charge ratio of the compound represented by Formula (15) to the compound represented by Formulas (16-1) and (16-2) is a molar ratio represented by Formula (15).
- the number of the compounds represented by the formulas (16-1) and (16-2) is about 1 to 3 with respect to the compound 1 represented by
- the charge ratio of the compound represented by Formula (15) and the compound represented by Formula (16-1 ′) is a molar ratio represented by Formula (15).
- the amount of the compound represented by the formula (16-1 ′) is about 1 to 3 with respect to the compound 1.
- Examples of the solvent used in the reaction represented by Schemes H and H ′ include dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylacetamide, tetrahydrofuran, dioxane, acetonitrile, toluene and the like. From the viewpoint of reactivity, tetrahydrofuran, N, N-dimethylformamide and the like are preferable.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 140 ° C.
- the reaction time is usually 0.1 to 100 hours.
- the charge ratio of the compound represented by Formula (17) and the compound represented by Formula (12) is a molar ratio with respect to Compound 1 represented by Formula (17).
- the number of compounds represented by formula (12) is about 1 to 3.
- the charging ratio of the compound represented by Formula (17 ′) and the compound represented by Formula (12) is a molar ratio represented by Formula (17 ′).
- the number of the compounds represented by the formula (12) is about 1 to 3 with respect to the compound 1.
- the reaction temperature is usually from ⁇ 50 ° C. to the boiling point of the solvent used, but is preferably in the range of 0 to 140 ° C.
- the reaction time is usually 0.1 to 100 hours.
- the target compound After completion of the reaction represented by each of the above schemes, it may be used as it is in the next step without being purified, or may be purified.
- the target compound When purifying, the target compound can be obtained according to a conventional method.
- the fluorene derivative represented by the formula (3 ′) is obtained by reacting the compound represented by the formula (6) with the compounds represented by the formulas (18-1) and (18-2). After the represented intermediate is synthesized (Scheme J), it can be synthesized by reacting this with the compound represented by the formula (12) in the presence of a catalyst (Scheme K).
- Scheme J the represented intermediate is synthesized (Scheme J)
- Scheme K the represented intermediate is synthesized by reacting this with the compound represented by the formula (12) in the presence of a catalyst.
- X A , X B , R 5 and R 6 are the same as described above.
- the charge ratio of the compound represented by Formula (6) and the compound represented by Formula (18-1) and (18-2) is a molar ratio represented by Formula (6).
- the number of the compounds represented by the formulas (18-1) and (18-2) is about 1 to 3 with respect to the compound 1 represented by
- Examples of the solvent used in the reaction represented by Scheme J include the same solvents as those described in the reaction represented by Scheme H.
- the charging ratio of the compound represented by Formula (19) and the compound represented by Formula (12) is a molar ratio with respect to Compound 1 represented by Formula (19).
- the number of compounds represented by formula (12) is about 1 to 3.
- Examples of the catalyst and the solvent used in the reaction represented by Scheme K include the same as those described in the reaction represented by Scheme E.
- the target compound After completion of the reaction represented by each of the above schemes, it may be used as it is in the next step without being purified, or may be purified.
- the target compound When purifying, the target compound can be obtained according to a conventional method.
- the monomer represented by the formula (1 ′) is represented by the monomer represented by the formula (2 ′) or the formula (3 ′). Since the monomer represented by the formula (2 ′) does not react with the monomer represented by the formula (3 ′), it can be represented by the formula (1).
- the repeating unit adjacent to the repeating unit is either the repeating unit represented by the formula (2) or the repeating unit represented by the formula (3). For the same reason, both the repeating unit adjacent to the repeating unit represented by formula (2) and the repeating unit adjacent to the repeating unit represented by formula (3) are both the repeating units represented by formula (1). It is.
- the fluorine atom-containing polymer of the present invention can be suitably used as a charge transport material.
- charge transportability is synonymous with conductivity and is synonymous with hole transportability.
- the charge transporting substance may be a substance having a charge transporting property per se, or a substance having a charge transporting property when used together with a dopant.
- the charge transporting varnish may be one that has charge transporting property itself, and the solid film obtained thereby may have charge transporting property.
- the charge transporting varnish of the present invention includes a charge transporting material composed of the fluorine atom-containing polymer, a charge transporting material not containing a fluorine atom, a dopant composed of a heteropoly acid, and an organic solvent.
- charge transporting substances that do not contain fluorine atoms examples include charge transporting oligomers such as aniline derivatives, thiophene derivatives, and pyrrole derivatives.
- the molecular weight of the charge transporting oligomer is usually 200 to 5,000, but is preferably 300 or more, more preferably 400 or more, and still more preferably 500 from the viewpoint of preparing a varnish that gives a thin film having high charge transporting properties. From the viewpoint of preparing a uniform varnish that gives a thin film with high flatness, it is preferably 4,000 or less, more preferably 3,000 or less, and even more preferably 2,000 or less.
- an aniline derivative is preferable in consideration of the solubility in an organic solvent and the balance of charge transporting properties of the obtained thin film.
- the aniline derivative include oligoaniline derivatives described in JP-A No. 2002-151272, oligoaniline compounds described in WO 2004/105446, oligoaniline compounds described in WO 2008/032617, and WO 2008/032616. Oligoaniline compounds described in No. 2013, aryl diamine compounds described in International Publication No. 2013/042623, and the like.
- aniline derivative represented by following formula (20) can also be used conveniently.
- X 1 represents —NY 1 —, —O—, —S—, — (CR 17 R 18 ) L — or a single bond, and when m or n is 0, NY 1 -is represented.
- Y 1 independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms or an alkynyl group having 2 to 20 carbon atoms, which may be substituted with Z 11 , or Z 1 Represents an aryl group having 6 to 20 carbon atoms or a heteroaryl group having 2 to 20 carbon atoms, which may be substituted with 12 ;
- an alkyl group having 1 to 20 carbon atoms an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, and a heteroaryl group having 2 to 20 carbon atoms.
- R 17 and R 18 are each independently a hydrogen atom, chlorine atom, bromine atom, iodine atom, nitro group, cyano group, amino group, aldehyde group, hydroxy group, thiol group, sulfonic acid group, carboxylic acid group
- Z may be substituted with 11, alkyl group having 1 to 20 carbon atoms, alkenyl or alkynyl group having 2 to 20 carbon atoms having 2 to 20 carbon atoms, optionally substituted by Z 12, C 6 -C 20 aryl groups or heteroaryl groups having 2 to 20 carbon atoms, or —NHY 2 , —NY 3 Y 4 , —C (O) Y 5 , —OY 6 , —SY 7 , —SO 3 Y 8 , —C It represents a group (O) OY 9 , —OC (O) Y 10 , —C (O) NHY 11 or —C (O) NY 12 Y 13
- Y 2 to Y 13 are each independently an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an alkynyl group having 2 to 20 carbon atoms, which may be substituted with Z 11 , or Z Represents an aryl group having 6 to 20 carbon atoms or a heteroaryl group having 2 to 20 carbon atoms, which may be substituted with 12 ;
- Z 11 may be substituted with a chlorine atom, bromine atom, iodine atom, nitro group, cyano group, amino group, aldehyde group, hydroxy group, thiol group, sulfonic acid group, carboxylic acid group, or Z 13 .
- An aryl group having 6 to 20 carbon atoms or a heteroaryl group having 2 to 20 carbon atoms is represented.
- Z 12 may be substituted with chlorine atom, bromine atom, iodine atom, nitro group, cyano group, amino group, aldehyde group, hydroxy group, thiol group, sulfonic acid group, carboxylic acid group, or Z 13 ,
- An alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an alkynyl group having 2 to 20 carbon atoms is represented.
- Z 13 represents a chlorine atom, bromine atom, iodine atom, nitro group, cyano group, amino group, aldehyde group, hydroxy group, thiol group, sulfonic acid group, or carboxylic acid group.
- alkyl group, alkenyl group, alkynyl group, aryl group and heteroaryl group of R 17 , R 18 and Y 2 to Y 13 are the same as those described above.
- R 17 and R 18 a hydrogen atom or an alkyl group Z 11 to have ⁇ 1 to 20 carbon atoms substituted by are preferred, and a methyl group which may be substituted with a hydrogen atom or Z 11 More preferred are both hydrogen atoms.
- L represents the number of groups represented by — (CR 17 R 18 ) — and is an integer of 1 to 20, preferably 1 to 10, more preferably 1 to 5, and even more preferably 1 to 2. 1 is optimal.
- the plurality of R 17 may be the same or different from each other, and the plurality of R 18 may be the same or different from each other.
- X 1 is preferably —NY 1 — or a single bond.
- Y 1 hydrogen atom or an alkyl group of Z 11 has been having 1 to 20 carbon atoms substituted with, more preferably a methyl group which may be substituted with a hydrogen atom or a Z 11, a hydrogen atom Is the best.
- R 11 to R 16 are each independently a hydrogen atom, a chlorine atom, a bromine atom, an iodine atom, a nitro group, a cyano group, an amino group, an aldehyde group, a hydroxy group, a thiol group, or a sulfonic acid group.
- Z 11 an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms or an alkynyl group having 2 to 20 carbon atoms, or substituted by Z 12
- Preferred is an aryl group having 6 to 20 carbon atoms or a heteroaryl group having 2 to 20 carbon atoms, or —NHY 2 , —NY 3 Y 4 , —C (O) Y 5 , —OY 6 , —SY 7 , —SO 3 represents Y 8 , —C (O) OY 9 , —OC (O) Y 10 , —C (O) NHY 11 or —C (O) NY 12 Y 13 (Y 2 to
- R 11 to R 14 are each a hydrogen atom, an alkyl group having 1 to 10 carbon atoms which may be substituted with Z 11 , or a carbon number 6 which may be substituted with Z 12.
- An aryl group having ⁇ 14 is preferred, a hydrogen atom, an alkyl group having 1 to 10 carbon atoms optionally substituted with Z 11 is more preferred, and all hydrogen atoms are optimal.
- R 15 and R 16 are each a hydrogen atom, an alkyl group having 1 to 10 carbon atoms that may be substituted with Z 11 , an aryl group having 6 to 14 carbon atoms that may be substituted with Z 12 , or preferably optionally substituted diphenylamino group (-NY 3 Y 4 groups Y 3 and Y 4 is a phenyl group optionally substituted by Z 12) with Z 12, a hydrogen atom, or substituted with Z 12
- An optionally substituted diphenylamino group is more preferred, and at the same time, a hydrogen atom or a diphenylamino group is even more preferred.
- R 11 to R 14 may be hydrogen atoms and alkyl groups having 1 to 10 carbon atoms which may be substituted with Z 11 , and R 15 and R 16 may be substituted with hydrogen atoms and Z 12.
- a good diphenylamino group, X 1 is —NY 1 — or a single bond, and Y 1 is preferably a hydrogen atom or a combination of methyl groups, R 11 to R 14 are hydrogen atoms, and R 15 and R 16 are simultaneously hydrogen atoms or A combination of a diphenylamino group, X 1 is —NH— or a single bond is more preferable.
- m and n each independently represent an integer of 0 or more and satisfy 1 ⁇ m + n ⁇ 20.
- the Y 1 ⁇ Y 13 and R 11 ⁇ R 18, Z 11 is preferably an aryl group which may having 6 to 20 carbon atoms optionally substituted by Z 13, a phenyl group which may be substituted with Z 13 Is more preferred and not present (ie, unsubstituted).
- Z 12 is preferably an alkyl group which may having 1 to 20 carbon atoms substituted with Z 13, more preferably an alkyl group having 1 to 4 carbon atoms optionally substituted by Z 13, the absence (i.e. Is unsubstituted).
- Z 13 is optimally absent (ie, unsubstituted).
- the alkyl group, alkenyl group and alkynyl group preferably have 10 or less carbon atoms, more preferably 6 or less, and even more preferably 4 or less.
- the carbon number of the aryl group and heteroaryl group is preferably 14 or less, more preferably 10 or less, and even more preferably 6 or less.
- the method for synthesizing the aniline derivative is not particularly limited, but Bulletin of Chemical Society of Japan, 67, pp. 1749-1752 (1994), Synthetic Metals, 84, pp. 119-120 (1997), Thin Solid Films, 520 (24), pp. 157 7157-7163 (2012), International Publication No. 2008/032617, International Publication No. 2008/032616, International Publication No. 2008/129947, International Publication No. 2013/084664, etc. The method is mentioned.
- aniline derivative represented by the formula (20) include, but are not limited to, those represented by the following formula.
- DPA represents a diphenylamino group
- Ph represents a phenyl group
- TPA represents a p- (diphenylamino) phenyl group.
- the content of the charge transporting substance in the varnish of the present invention is preferably about 0.1 to 20% by mass with respect to the entire varnish from the viewpoint of suppressing the precipitation of the charge transporting substance.
- the use ratio of the charge transporting substance composed of a fluorine atom-containing polymer and the charge transporting substance not containing a fluorine atom is a mass ratio in consideration of further improving the luminance characteristics of the obtained organic EL element.
- the charge transport material 1 containing no fluorine atom the charge transport material comprising a fluorine atom-containing polymer is preferably about 0.1 to 5, more preferably about 0.5 to 3, and still more preferably 0. It is about .5 to 1.
- the charge transport varnish of the present invention contains a heteropolyacid as a dopant. Therefore, not only high hole acceptability from transparent electrodes represented by indium tin oxide (ITO) and indium zinc oxide (IZO), but also high hole acceptability from metal anodes represented by aluminum. A thin film having excellent charge transportability can be obtained.
- the heteropolyacid typically has a structure in which a hetero atom is located at the center of a molecule, which is represented by a chemical structure of Keggin type represented by formula (A1) or Dawson type represented by formula (A2), and vanadium ( V), molybdenum (Mo), tungsten (W) and other oxoacids such as isopolyacids, and polyacids formed by condensation of oxoacids of different elements.
- oxo acids of different elements mainly include silicon (Si), phosphorus (P), and arsenic (As) oxo acids.
- heteropolyacids include phosphomolybdic acid, silicomolybdic acid, phosphotungstic acid, silicotungstic acid, and phosphotungstomolybdic acid. You may use these individually by 1 type or in combination of 2 or more types.
- the heteropolyacid used by this invention is available as a commercial item, and can also be synthesize
- the heteropolyacid is preferably phosphotungstic acid or phosphomolybdic acid, and more preferably phosphotungstic acid.
- a dopant consists of 2 or more types of heteropolyacids, it is preferable that at least 1 is the phosphotungstic acid or phosphomolybdic acid among the 2 or more types of heteropolyacid, and it is more preferable that it is phosphotungstic acid.
- heteropolyacids are those obtained as commercially available products or known synthesis methods, even if the number of elements is large or small from the structure represented by the general formula in quantitative analysis such as elemental analysis. Therefore, as long as it is appropriately synthesized, it can be used in the present invention.
- phosphotungstic acid is generally represented by the chemical formula H 3 (PW 12 O 40 ) ⁇ nH 2 O
- phosphomolybdic acid is represented by the chemical formula H 3 (PMo 12 O 40 ) ⁇ nH 2 O, respectively.
- P (phosphorus), O (oxygen), W (tungsten) or Mo (molybdenum) in this formula is large or small, it is obtained as a commercial product, or As long as it is appropriately synthesized according to a known synthesis method, it can be used in the present invention.
- the mass of the heteropolyacid defined in the present invention is not the mass of pure phosphotungstic acid (phosphotungstic acid content) in the synthesized product or commercially available product, but a commercially available form and a known synthesis. In a form that can be isolated by the method, it means the total mass in a state containing hydration water and other impurities.
- the heteropolyacid contained in the charge transporting varnish of the present invention is a charge that does not contain fluorine atoms in mass ratio, considering that a charge transporting thin film giving high brightness can be obtained with good reproducibility when used in an organic EL device.
- the transporting substance 1 it is preferably about 2 to 10, more preferably about 2.5 to 9.0.
- Organic solvent As the organic solvent used when preparing the charge transporting varnish, a highly soluble solvent that can dissolve the charge transporting substance and the dopant well can be used.
- Examples of such highly soluble solvents include organic solvents such as cyclohexanone, N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone, and 1,3-dimethyl-2-imidazolidinone. However, it is not limited to these. These solvents can be used singly or in combination of two or more, and the amount used can be 5 to 100% by mass in the total solvent used in the varnish.
- both the charge transporting substance and the dopant are completely dissolved in the solvent.
- the varnish has a viscosity of 10 to 200 mPa ⁇ s, particularly 35 to 150 mPa ⁇ s at 25 ° C., and a boiling point of 50 to 300 ° C., particularly 150 to 250 ° C. at normal pressure (atmospheric pressure).
- At least one high-viscosity organic solvent can be contained.
- Examples of the high viscosity organic solvent include cyclohexanol, ethylene glycol, ethylene glycol diglycidyl ether, 1,3-octylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, 1,3-butanediol, Examples include 2,3-butanediol, 1,4-butanediol, propylene glycol, hexylene glycol, and the like, but are not limited thereto.
- the addition ratio of the high-viscosity organic solvent to the entire solvent used in the varnish of the present invention is preferably within a range where no solid is precipitated, and the addition ratio is preferably 5 to 90% by mass as long as no solid is precipitated.
- solvents are used in an amount of 1 to 90% by weight, preferably 1 to 90%, based on the total solvent used in the varnish. It is also possible to mix at a ratio of 50% by mass.
- solvents examples include propylene glycol monomethyl ether, ethylene glycol monobutyl ether, diethylene glycol diethyl ether, diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, dipropylene glycol monomethyl ether, propylene glycol monomethyl ether
- solvents include, but are not limited to, ether acetate, diethylene glycol monoethyl ether, diacetone alcohol, ⁇ -butyrolactone, ethyl lactate, and n-hexyl acetate. These solvents can be used alone or in combination of two or more.
- the viscosity of the varnish of the present invention is appropriately set according to the thickness of the thin film to be produced and the solid content concentration, but is usually 1 to 50 mPa ⁇ s at 25 ° C.
- the solid content concentration of the charge transporting varnish in the present invention is appropriately set in consideration of the viscosity and surface tension of the varnish, the thickness of the thin film to be produced, etc., but is usually 0.1 to 10.0 mass. In consideration of improving the coatability of the varnish, it is preferably 0.5 to 5.0% by mass, more preferably 1.0 to 3.0% by mass.
- solid content means what remove
- the method for preparing the varnish is not particularly limited.
- the charge transporting material comprising the fluorine atom-containing polymer of the present invention is first dissolved in a solvent, and the charge transporting material does not contain a fluorine atom, or a heteropolyacid.
- the method of adding the dopant which consists of one by one, and the method of dissolving the mixture of these substances in a solvent are mentioned.
- organic solvents when there are a plurality of organic solvents, for example, these are first dissolved in a solvent that well dissolves the charge transporting material made of the fluorine atom-containing polymer of the present invention and the charge transporting material not containing a fluorine atom, Other solvents may be added thereto, and a charge transporting substance composed of a fluorine atom-containing polymer, a charge transporting substance not containing a fluorine atom, or the like are dissolved in a mixed solvent of a plurality of organic solvents sequentially or simultaneously. You may let them.
- the charge transporting varnish is composed of a charge transporting material comprising the fluorine atom-containing polymer of the present invention, a charge transporting material not containing fluorine atoms, and the like. After dissolving in a solvent, it is desirable to filter using a sub-micron order filter or the like.
- a charge transporting thin film can be formed on a base material by applying the charge transporting varnish of the present invention on the base material and baking it.
- Examples of the varnish coating method include, but are not limited to, a dip method, a spin coating method, a transfer printing method, a roll coating method, a brush coating method, an ink jet method, a spray method, and a slit coating method. It is preferable to adjust the viscosity and surface tension of the varnish depending on the coating method.
- the firing atmosphere is not particularly limited, and a thin film having a uniform film formation surface and high charge transportability can be obtained not only in the air atmosphere but also in an inert gas such as nitrogen or in a vacuum. it can.
- the firing temperature is appropriately set within a range of about 100 to 260 ° C. in consideration of the use of the obtained thin film, the degree of charge transportability imparted to the obtained thin film, and the like.
- the temperature is preferably about 140 to 250 ° C, more preferably about 150 to 230 ° C.
- two or more steps of temperature change may be applied for the purpose of developing a higher uniform film forming property or causing the reaction to proceed on the substrate.
- the heating may be performed using an appropriate device such as a hot plate or an oven.
- the film thickness of the charge transporting thin film is not particularly limited, and can be about 5 to 200 nm when used in an organic EL device.
- a charge transporting thin film as a hole injecting and transporting layer, considering that the degree of phase separation of the two kinds of charge transporting materials used in the present invention is increased to further increase the luminance characteristics and lifetime characteristics of the organic EL element, 10 to 100 nm is preferable, 20 to 50 nm is more preferable, and 25 to 45 nm is even more preferable.
- As a method of changing the film thickness there are methods such as changing the solid content concentration in the varnish and changing the amount of the solution on the substrate during coating.
- Organic EL device examples of materials and methods for producing an OLED element using the charge transporting varnish of the present invention include, but are not limited to, the following.
- the electrode substrate to be used is preferably cleaned in advance by liquid cleaning with a detergent, alcohol, pure water or the like.
- the anode substrate is subjected to surface treatment such as UV ozone treatment or oxygen-plasma treatment immediately before use. It is preferable.
- the surface treatment may not be performed.
- An example of a method for producing an OLED element having a functional single film (hole injection transport layer) composed of a thin film obtained from the charge transport varnish of the present invention is as follows.
- the charge transporting varnish of the present invention is applied on the anode substrate and baked by the above-described method to produce a functional single film on the electrode. This is introduced into a vacuum deposition apparatus, and a light emitting layer, an electron transport layer, an electron injection layer, and a cathode metal are sequentially deposited to form an OLED element. If necessary, an electron blocking layer may be provided between the light emitting layer and the hole injecting and transporting layer.
- anode material examples include transparent electrodes typified by indium tin oxide (ITO) and indium zinc oxide (IZO), metal anodes typified by aluminum, alloys thereof, and the like. What performed the chemical conversion process is preferable. Polythiophene derivatives and polyaniline derivatives having high charge transporting properties can also be used.
- metals constituting the metal anode include scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, yttrium, zirconium, niobium, molybdenum, ruthenium, rhodium, palladium, cadmium.
- Materials for forming the light emitting layer include tris (8-quinolinolato) aluminum (III) (Alq 3 ), bis (8-quinolinolato) zinc (II) (Znq 2 ), bis (2-methyl-8-quinolinolato)- 4- (p-phenylphenolate) aluminum (III) (BAlq), 4,4′-bis (2,2-diphenylvinyl) biphenyl, 9,10-di (naphthalen-2-yl) anthracene, 2-t -Butyl-9,10-di (naphthalen-2-yl) anthracene, 2,7-bis [9,9-di (4-methylphenyl) -fluoren-2-yl] -9,9-di (4- Methylphenyl) fluorene, 2-methyl-9,10-bis (naphthalen-2-yl) anthracene, 2- (9,9-spirobifluoren-2-yl) -9,9-spir
- Materials for forming the electron injection layer include lithium oxide (Li 2 O), magnesium oxide (MgO), alumina (Al 2 O 3 ), lithium fluoride (LiF), sodium fluoride (NaF), magnesium fluoride ( MgF 2 ), cesium fluoride (CsF), strontium fluoride (SrF 2 ), molybdenum trioxide (MoO 3 ), aluminum, lithium acetylacetonate (Li (acac)), lithium acetate, lithium benzoate, etc. .
- cathode material examples include aluminum, magnesium-silver alloy, aluminum-lithium alloy, lithium, sodium, potassium, cesium and the like.
- Examples of the material for forming the electron block layer include tris (phenylpyrazole) iridium.
- the method for producing a PLED element using the charge transporting varnish of the present invention is not particularly limited, and examples thereof include the following methods.
- the functionality comprising the thin film obtained from the charge transporting varnish of the present invention by forming the light emitting polymer layer.
- a PLED element having a single film can be produced. Specifically, the charge transporting varnish of the present invention is applied on the anode substrate, a functional single film is produced by the above-described method, a light emitting polymer layer is formed thereon, and a cathode electrode is further deposited. Thus, a PLED element is obtained.
- the same materials as those used in the production of the OLED element can be used, and the same cleaning treatment and surface treatment can be performed.
- a solvent is added to the light-emitting polymer material, or a material to which a dopant is added, and the solvent is dissolved or uniformly dispersed. After coating on the functional single film, The method of forming into a film by baking is mentioned.
- Examples of the light-emitting polymer material include polyfluorene derivatives such as poly (9,9-dialkylfluorene) (PDAF), poly (2-methoxy-5- (2′-ethylhexoxy) -1,4-phenylenevinylene) (MEH). -PPV) and the like, polythiophene derivatives such as poly (3-alkylthiophene) (PAT), polyvinylcarbazole (PVCz) and the like.
- PDAF poly (9,9-dialkylfluorene)
- MEH 2-methoxy-5- (2′-ethylhexoxy) -1,4-phenylenevinylene
- PVT polythiophene derivatives
- PVCz polyvinylcarbazole
- Examples of the solvent include toluene, xylene, chloroform and the like, and examples of the dissolution or uniform dispersion method include stirring, heating and stirring, and ultrasonic dispersion.
- the application method is not particularly limited, and examples thereof include an inkjet method, a spray method, a dip method, a spin coating method, a transfer printing method, a roll coating method, and a brush coating method.
- the application is preferably performed under an inert gas such as nitrogen or argon.
- the firing method a method of heating with an oven or a hot plate under an inert gas or in a vacuum can be mentioned.
- the organic EL device of the present invention may be sealed together with a water catching agent or the like according to a standard method in order to prevent deterioration of characteristics.
- N-bromosuccinimide (2.73 g, 15.4 mmol) was added to a DMF solution (58 mL) of compound 2 (2.90 g, 3.7 mmol) at 0 ° C., and the mixture was stirred at room temperature for 1 hour. After completion of the reaction, water (58 mL) was added at 0 ° C., and the organic layer was extracted with ethyl acetate, dried over sodium sulfate, and concentrated. The resulting crude product was subjected to silica gel column chromatography (eluent: hexane / ethyl acetate). (4/1 ⁇ 3/1)) to obtain compound 3 as a white solid (yield 3.95 g, yield 93%).
- T-BuOK (6.73 g, 60 mmol) was added to a THF solution (20 mL) of fluorene (3.32 g, 20 mmol) at room temperature, and then 4-bromobenzyl bromide (11.0 g, 44 mmol) in THF (46 mL) at room temperature. ) was added dropwise and heated to reflux for 8 hours. After completion of the reaction, the mixture was allowed to cool to room temperature, and water (30 mL) was added. The organic layer is extracted with ethyl acetate, dried over magnesium sulfate, and concentrated.
- Example 2 Charge transporting varnish B A charge transporting varnish B was obtained in the same manner as in Example 1 except that the polymer 2 was used instead of the polymer 1.
- OLED element organic EL element
- the substrate used for evaluating the electrical characteristics was 25 mm ⁇ 25 mm ⁇ 0.7 t of indium tin oxide patterned on the surface with a film thickness of 150 nm.
- a glass substrate hereinafter abbreviated as ITO substrate
- the ITO substrate was used after removing impurities on the surface using an O 2 plasma cleaning apparatus (150 W, 30 seconds).
- Example 3 Production of OLED device using charge transporting varnish A
- the charge transporting varnish A obtained in Example 1 was applied to an ITO substrate using a spin coater and then dried at 80 ° C for 1 minute. Further, it was baked at 230 ° C. for 15 minutes to form a uniform thin film of 30 nm on the ITO substrate.
- tris (8-quinolinolato) aluminum (III) (Alq 3 ), lithium fluoride, and aluminum were deposited using a vapor deposition apparatus (vacuum degree 1.0 ⁇ 10 ⁇ 5 Pa). Thin films were sequentially stacked to obtain an OLED element.
- the deposition rate was 0.2 nm / second for Alq 3 and aluminum, and 0.02 nm / second for lithium fluoride, and the film thicknesses were 40 nm, 0.5 nm, and 100 nm, respectively.
- the characteristic was evaluated. Sealing was performed according to the following procedure.
- the organic EL element is placed between the sealing substrates, and the sealing substrate is bonded with an adhesive (XNR5516Z-B1 manufactured by Nagase ChemteX Corporation). It was. At this time, a water catching agent (manufactured by Dynic Co., Ltd., HD-071010W-40) was housed in the sealing substrate together with the OLED element.
- the bonded sealing substrate was irradiated with UV light (wavelength: 365 nm, irradiation amount: 6,000 mJ / cm 2 ), and then annealed at 80 ° C. for 1 hour to cure the adhesive.
- Example 4 Preparation of OLED element using charge transporting varnish B The same method as in Example 3 except that instead of the charge transporting varnish A, the charge transporting varnish B obtained in Example 2 was used. Thus, an OLED element was produced.
- Table 1 shows the current density, luminance, and current efficiency at a driving voltage of 5V.
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Abstract
Description
1.下記式(1)で表される繰り返し単位を与えるフルオレン誘導体と、下記式(2)で表される繰り返し単位を与えるフルオレン誘導体と、下記式(3)で表される繰り返し単位を与えるフルオレン誘導体との縮合重合体であることを特徴とするフッ素原子含有重合体。
R3及びR4は、それぞれ独立に、非共役系の2価の有機基を表し;
R5は、水素原子、又は少なくとも1つの水素原子がフッ素原子で置換されていてもよい、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、炭素数8~20のアルキルアラルキル基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基若しくは炭素数2~20のヘテロアリールオキシ基を表し;
R6は、少なくとも1つの水素原子がフッ素原子で置換された、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、炭素数8~20のアルキルアラルキル基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基又は炭素数2~20のヘテロアリールオキシ基を表し;
Rは、それぞれ独立に、ハロゲン原子、ニトロ基、シアノ基、Z1で置換されていてもよい、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基若しくは炭素数2~20のアルキニルオキシ基、又はZ2で置換されていてもよい、炭素数6~20のアリール基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基若しくは炭素数2~20のヘテロアリールオキシ基を表し;
Z1は、ハロゲン原子、ニトロ基、シアノ基、又はZ3で置換されていてもよい、炭素数6~20のアリール基、炭素数2~20のヘテロアリール基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基若しくは炭素数2~20のヘテロアリール基を表し;
Z2は、ハロゲン原子、ニトロ基、シアノ基、又はZ3で置換されていてもよい、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基若しくは炭素数2~20のヘテロアリール基を表し;
Z3は、ハロゲン原子、ニトロ基又はシアノ基を表し;
p及びqは、それぞれ独立に、0又は1を表す。]
2.重量平均分子量が、1,000~200,000である1の重合体。
3.R1及びR2が、ともに炭素数1~20のアルキル基又はともに少なくとも1つのエーテル構造を含む炭素数2~20のアルキル基である1又は2の重合体。
4.R3及びR4が、-Rc-Ar-(式中、Rcは、炭素数1~20のアルキレン基を表し、Arは、炭素数6~20のアリーレン基を表す。)である1~3のいずれかの重合体。
5.R5が、少なくとも1つの水素原子がフッ素原子で置換された、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、炭素数8~20のアルキルアラルキル基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基又は炭素数2~20のヘテロアリールオキシ基である1~4のいずれかの重合体。
6.1~5のいずれかの重合体からなる電荷輸送性物質。
7.6の電荷輸送性物質、フッ素原子を含有しない電荷輸送性物質、ヘテロポリ酸からなるドーパント、及び有機溶媒を含む電荷輸送性ワニス。
8.前記フッ素原子を含有しない電荷輸送性物質が、アニリン誘導体である7の電荷輸送性ワニス。
9.7又は8の電荷輸送性ワニスを用いて作製される電荷輸送性薄膜。
10.9の電荷輸送性薄膜を有する電子デバイス。
11.9の電荷輸送性薄膜を有する有機エレクトロルミネッセンス素子。
12.7又は8の電荷輸送性ワニスを基材上に塗布し、溶媒を蒸発させることを特徴とする電荷輸送性薄膜の製造方法。
13.下記式(1')で表されるフルオレン誘導体と、下記式(2')で表されるフルオレン誘導体と、下記式(3')で表されるフルオレン誘導体とを縮合重合させることを特徴とする1のフッ素原子含有重合体の製造方法。
14.下記式で表されるフルオレン誘導体。
p及びqは、それぞれ独立に、0又は1を表す。]
15.下記式で表されるフルオレン誘導体。
XAは、それぞれ独立に、ハロゲン原子又は擬ハロゲン基を表し;
p及びqは、それぞれ独立に、0又は1を表す。]
16.下記式で表されるフルオレン誘導体。
17.下記式で表されるフルオレン誘導体。
本発明のフッ素原子含有重合体は、下記式(1)で表される繰り返し単位を与えるフルオレン誘導体と、下記式(2)で表される繰り返し単位を与えるフルオレン誘導体と、下記式(3)で表される繰り返し単位を与えるフルオレン誘導体との縮合重合体である。
-(RAO)r-RB (A)
-(CH2CH2O)r-CH3 (B)
(式中、RAは炭素数1~4の直鎖状又は分岐状のアルキレン基を表し、RBは炭素数1~[20-(RAの炭素数)×r]の直鎖状又は分岐状のアルキル基を表し、rは1~9の整数である。rは、ドーパントとの相溶性の観点から、好ましくは2以上、より好ましくは3以上であり、原料化合物の入手容易性の観点から、好ましくは5以下、より好ましくは4以下である。)
-CH2CH2O(CH2)5CH3、-CH2CH2OCH(CH3)(CH2)3CH3、-CH2CH2OCH2CH(CH3)(CH2)2CH3、-CH2CH2O(CH2)2CH(CH3)CH2CH3、-CH2CH2O(CH2)3CH(CH3)2、-CH2CH2OC(CH3)2(CH2)2CH3、-CH2CH2OCH(CH2CH3)(CH2)2CH3、-CH2CH2OC(CH3)2CH(CH3)2、-CH2CH2O(CH2)6CH3、-CH2CH2O(CH2)7CH3、-CH2CH2OCH2CH(CH2CH3)(CH2)3CH3、-CH2CH2O(CH2)8CH3、-CH2CH2O(CH2)9CH3、-CH2CH2O(CH2)10CH3、-CH2CH2O(CH2)11CH3、-CH2CH2O(CH2)12CH3、-CH2CH2O(CH2)13CH3、-CH2CH2O(CH2)14CH3、-CH2CH2O(CH2)15CH3、-CH2CH2O(CH2)16CH3、-CH2CH2O(CH2)17CH3、-CH2CH2CH2OCH3、-CH2CH2CH2OCH2CH3、-CH2CH2CH2O(CH2)2CH3、-CH2CH2CH2OCH(CH3)2、-CH2CH2CH2O(CH2)3CH3、-CH2CH2CH2OCH2CH(CH3)2、-CH2CH2CH2OC(CH3)3、-CH2CH2CH2O(CH2)4CH3、-CH2CH2CH2OCH(CH3)(CH2)2CH3、-CH2CH2CH2OCH2CH(CH3)2、-CH2CH2CH2O(CH2)2CH(CH3)2、-CH2CH2CH2OC(CH3)3、-CH2CH2CH2OCH(CH3)(CH2)3CH3、-CH2CH2CH2O(CH2)5CH3、-CH2CH2CH2OCH(CH3)(CH2)3CH3、-CH2CH2CH2OCH2CH(CH3)(CH2)2CH3、-CH2CH2CH2O(CH2)2CH(CH3)CH2CH3、-CH2CH2CH2O(CH2)3CH(CH3)2、-CH2CH2CH2OC(CH3)2(CH2)2CH3、-CH2CH2CH2OCH(CH2CH3)(CH2)2CH3、-CH2CH2CH2OC(CH3)2CH(CH3)2、-CH2CH2CH2O(CH2)6CH3、-CH2CH2CH2O(CH2)7CH3、-CH2CH2CH2OCH2CH(CH2CH3)(CH2)3CH3、-CH2CH2OCH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH3、-CH2CH2CH2OCH2CH2CH2OCH3、-CH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH3、-CH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH3、-CH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH3、-CH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH2CH2CH2OCH3、-CH2CH2CH2CH2OCH2CH2CH2CH2OCH2CH2CH2CH2OCH3、-CH2CH2CH2CH2OCH2CH2CH2CH2OCH2CH2CH2CH2OCH2CH2CH2CH2OCH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH2OCH2CH3、-CH2CH2OCH2CH2OCH2CH3、-CH2CH2OCH2CH2OCH2CH2OCH2CH3、-CH2CH2CH2O(CH2)8CH3、-CH2CH2CH2O(CH2)9CH3、-CH2CH2CH2O(CH2)10CH3、-CH2CH2CH2O(CH2)11CH3、-CH2CH2CH2O(CH2)12CH3、-CH2CH2CH2O(CH2)13CH3、-CH2CH2CH2O(CH2)14CH3、-CH2CH2CH2O(CH2)15CH3、-CH2CH2CH2O(CH2)16CH3等が挙げられる。
本発明のフッ素原子含有重合体は、式(1)で表される繰り返し単位を与えるフルオレン誘導体と、式(2)で表される繰り返し単位を与えるフルオレン誘導体と、式(3)で表される繰り返し単位を与えるフルオレン誘導体との縮合重合によって合成することができる。
本発明のフッ素原子含有重合体は、電荷輸送性物質として好適に使用できる。本発明において、電荷輸送性とは、導電性と同義であり、正孔輸送性と同義である。電荷輸送性物質とは、それ自体に電荷輸送性があるものでもよく、ドーパントと共に用いた際に電荷輸送性があるものでもよい。電荷輸送性ワニスとは、それ自体に電荷輸送性があるものでもよく、それにより得られる固形膜が電荷輸送性を有するものでもよい。
本発明の電荷輸送性ワニスは、前記フッ素原子含有重合体からなる電荷輸送性物質、フッ素原子を含有しない電荷輸送性物質、ヘテロポリ酸からなるドーパント、及び有機溶媒を含む。
フッ素原子を含有しない電荷輸送性物質としては、アニリン誘導体、チオフェン誘導体、ピロール誘導体等の電荷輸送性オリゴマーが挙げられる。電荷輸送性オリゴマーの分子量は、通常、200~5,000であるが、電荷輸送性の高い薄膜を与えるワニスを調製する観点から、好ましくは300以上、より好ましくは400以上、より一層好ましくは500以上であり、平坦性の高い薄膜を与える均一なワニスを調製する観点から、好ましくは4,000以下であり、より好ましくは3,000以下であり、より一層好ましくは2,000以下である。
本発明の電荷輸送性ワニスは、ドーパントとしてヘテロポリ酸を含む。それゆえ、インジウム錫酸化物(ITO)、インジウム亜鉛酸化物(IZO)に代表される透明電極からの高正孔受容能のみならず、アルミニウムに代表される金属陽極からの高正孔受容能を示す電荷輸送性に優れた薄膜を得ることができる。
電荷輸送性ワニスを調製する際に用いられる有機溶媒としては、電荷輸送性物質及びドーパントを良好に溶解し得る高溶解性溶媒を用いることができる。
本発明の電荷輸送性ワニスを基材上に塗布して焼成することで、基材上に電荷輸送性薄膜を形成させることができる。
本発明の電荷輸送性ワニスを用いてOLED素子を作製する場合の使用材料や作製方法としては、下記のようなものが挙げられるが、これらに限定されない。
(1)1H-NMR:日本電子(株)製ECX-300
(2)LC/MS:Waters社製、ZQ 2000、AB Sciex社製、TripleTOF5600+
(3)MALDI-TOF-MS:ブルカー社製、autoflex III smartbeam
(4)基板洗浄:長州産業(株)製、基板洗浄装置(減圧プラズマ方式)
(5)ワニスの塗布:ミカサ(株)製、スピンコーターMS-A100
(6)膜厚測定:(株)小坂研究所製、微細形状測定機サーフコーダET-4000
(7)GPC測定:(株)島津製作所製(カラム:SHODEX GPC KF-804L+GPC KF-805L、カラム温度:40℃、検出器:UV検出器(254nm)及びRI検出器、溶離液:THF、カラム流速:1.0mL/min)
(8)EL素子の作製:長州産業(株)製、多機能蒸着装置システムC-E2L1G1-N
(9)EL素子の輝度等の測定:(有)テック・ワールド製、I-V-L測定システム
1H-NMR (300MHz, CDCl3): δ 2.33(app t, J=7.8Hz, 4H), 2.78(app t, J=7.8Hz, 4H), 3.19-3.22(m, 4H), 3.35(s, 6H), 3.37-3.41(m, 4H), 3.50-3.52(m, 8H), 7.46(dd, J=1.8, 8.4Hz, 2H), 7.51(d, J=8.4Hz, 2H), 7.53(d, J=1.8Hz, 2H).
LC/MS (ESI+) m/z; 634[M+NH4]+
1H-NMR (300MHz, CDCl3): δ 2.13(app t, J=7.2Hz, 4H), 2.88(app t, J=7.2Hz, 4H), 3.28-3.31(m, 4H), 3.34(s, 6H), 3.45-3.51(m, 8H), 3.54-3.58(m, 4H), 6.98-7.11(m, 16H), 7.22-7.27(m, 8H), 7.44(d, J=8.1Hz, 2H).
LC/MS (ESI+) m/z; 794[M+H]+
1H-NMR(300MHz, CDCL3): δ 2.14(app t, J=7.2Hz, 4H), 2.86(app t, J= 7.2Hz, 4H), 3.26-3.33(m, 4H), 3.35(s, 6H), 3.41-3.57(m, 12H), 6.83-7.05(m, 12H), 7.25-7.47(m, 10H).
LC/MS (ESI+) m/z; 1131[M+Na]+
1H-NMR(300MHz, CDCL3): δ 1.33(s, 12H), 7.01-7.12(m, 8H), 7.23-7.28(m, 4H), 7.66(d, J=8.7Hz, 2H).
LC/MS (ESI+) m/z; 372[M+H]+
1H-NMR(300MHZ,CDCl3): δ 2.45(app t, J=7.2Hz, 4H), 2.84(app t, J= 7.2Hz, 4H), 3.20-3.23(m, 4H), 3.29(s, 6H), 3.37-3.50(m, 12H), 7.02-7.07(m, 4H), 7.14-7.19(m, 12H), 7.24-7.31(m, 8H), 7.53-7.61(m,8H), 7.72(d, J=8.1Hz, 2H).
LC/MS (ESI+) m/z; 963[M+NH4]+
1H-NMR(300MHz, CDCl3): δ 2.46(app t, J=7.2Hz,4H), 2.84(app t, J=7.2Hz, 4H), 3.20-3.24(m, 4H), 3.30(s,6H), 3.37-3.50(m, 12H), 7.01(d, J=9.0Hz, 8H), 7.15(d, J=8.4Hz, 4H), 7.38(d, J=9.0Hz, 8H), 7.56-7.61(m, 8H), 7.73(d, J=7.8Hz, 2H).
LC/MS (ESI+) m/z; 1278[M+NH4]+
1H-NMR(300MHz, CDCl3): δ 3.31(s, 4H), 6.48(d, J=8.4Hz, 4H), 7.00(d, J=8.7Hz, 4H), 7.20-7.31(m, 4H), 7.39-7.42(m, 4H).
MALDI-TOF-MS m/z; 526[M+Na]+
1H-NMR (300MHz, CDCl3): δ 1.27(s, 24H), 3.34(s, 4H), 6.68(d, J=7.8Hz,4H), 7.17-7.26 (m,4H), 7.35-7.41(m, 8H).
LC/MS (APCI+) m/z; 598[m]+
1H-NMR(300MHz, CDCl3): δ 3.41(s, 4H), 6.73(d, J=8.4Hz, 4H), 7.19-7.22(m, 6H), 7.38(dd, J=1.8, 8.4Hz, 2H), 7.59(d, J=1.2Hz, 2H).
1H-NMR(300MHz, CDCl3): δ 1.41(s, 24H), 3.45(s, 4H), 6.71(d, J=7.8Hz, 4H), 7.13(d, J=7.8Hz, 4H), 7.43(d, J=7.5Hz, 2H), 7.70(d, J=7.8Hz, 2H), 7.83(s, 2H).
LC/MS (ESI+) m/z; 780[M+HCOO]-
[実施例1]電荷輸送性ワニスA
ポリマー1(64mg)、国際公開第2013/084664号記載の方法に従って合成したオリゴアニリン化合物1(18mg)及びリンタングステン酸(関東化学(株)製)(89mg)の混合物に、窒素循環型グローブボックス内で1,3-ジメチルイミダゾリジノン(2g)を加えて、50℃で加熱攪拌して、溶解させた。これにシクロヘキサノール(2g)を加えて攪拌し、緑色溶液を得た。この溶液を孔径0.2μmのシリンジフィルターでろ過して、電荷輸送性ワニスAを得た。
ポリマー1のかわりにポリマー2を用いた以外は、実施例1と同様の方法で電荷輸送性ワニスBを得た。
ポリマー1を用いず、オリゴアニリン化合物1及びリンタングステン酸の使用量を、20mg及び100mgとした以外は、実施例1と同様の方法で電荷輸送性ワニスCを得た。
電気特性を評価する際の基板には、インジウム錫酸化物が表面上に膜厚150nmでパターニングされた25mm×25mm×0.7tのガラス基板(以下ITO基板と略す)を用いた。ITO基板は、O2プラズマ洗浄装置(150W、30秒間)を用いて、表面上の不純物を除去してから使用した。
実施例1で得られた電荷輸送性ワニスAを、スピンコーターを用いてITO基板に塗布した後、80℃で1分間乾燥し、更に230℃で15分間焼成し、ITO基板上に30nmの均一な薄膜を形成した。
次いで、薄膜を形成したITO基板に対し、蒸着装置(真空度1.0×10-5Pa)を用いてトリス(8-キノリノラート)アルミニウム(III)(Alq3)、フッ化リチウム、及びアルミニウムの薄膜を順次積層し、OLED素子を得た。この際、蒸着レートは、Alq3及びアルミニウムについては0.2nm/秒、フッ化リチウムについては0.02nm/秒の条件でそれぞれ行い、膜厚は、それぞれ40nm、0.5nm及び100nmとした。
なお、空気中の酸素、水等の影響による特性劣化を防止するため、OLED素子は封止基板により封止した後、その特性を評価した。封止は、以下の手順で行った。
酸素濃度2ppm以下、露点-85℃以下の窒素雰囲気中で、有機EL素子を封止基板の間に収め、封止基板を接着材(ナガセケムテックス(株)製、XNR5516Z-B1)により貼り合わせた。この際、捕水剤(ダイニック(株)製、HD-071010W-40)をOLED素子と共に封止基板内に収めた。
貼り合わせた封止基板に対し、UV光を照射(波長:365nm、照射量:6,000mJ/cm2)した後、80℃で1時間、アニーリング処理して接着材を硬化させた。
電荷輸送性ワニスAのかわりに実施例2で得られた電荷輸送性ワニスBを用いた以外は、実施例3と同様の方法でOLED素子を作製した。
電荷輸送性ワニスAのかわりに比較例1で得られた電荷輸送性ワニスCを用いた以外は、実施例3と同様の方法でOLED素子を作製した。
Claims (17)
- 下記式(1)で表される繰り返し単位を与えるフルオレン誘導体と、下記式(2)で表される繰り返し単位を与えるフルオレン誘導体と、下記式(3)で表される繰り返し単位を与えるフルオレン誘導体との縮合重合体であることを特徴とするフッ素原子含有重合体。
R3及びR4は、それぞれ独立に、非共役系の2価の有機基を表し;
R5は、水素原子、又は少なくとも1つの水素原子がフッ素原子で置換されていてもよい、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、炭素数8~20のアルキルアラルキル基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基若しくは炭素数2~20のヘテロアリールオキシ基を表し;
R6は、少なくとも1つの水素原子がフッ素原子で置換された、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、炭素数8~20のアルキルアラルキル基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基又は炭素数2~20のヘテロアリールオキシ基を表し;
Rは、それぞれ独立に、ハロゲン原子、ニトロ基、シアノ基、Z1で置換されていてもよい、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基若しくは炭素数2~20のアルキニルオキシ基、又はZ2で置換されていてもよい、炭素数6~20のアリール基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基若しくは炭素数2~20のヘテロアリールオキシ基を表し;
Z1は、ハロゲン原子、ニトロ基、シアノ基、又はZ3で置換されていてもよい、炭素数6~20のアリール基、炭素数2~20のヘテロアリール基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基若しくは炭素数2~20のヘテロアリール基を表し;
Z2は、ハロゲン原子、ニトロ基、シアノ基、又はZ3で置換されていてもよい、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基若しくは炭素数2~20のヘテロアリール基を表し;
Z3は、ハロゲン原子、ニトロ基又はシアノ基を表し;
p及びqは、それぞれ独立に、0又は1を表す。] - 重量平均分子量が、1,000~200,000である請求項1記載の重合体。
- R1及びR2が、ともに炭素数1~20のアルキル基又はともに少なくとも1つのエーテル構造を含む炭素数2~20のアルキル基である請求項1又は2記載の重合体。
- R3及びR4が、-Rc-Ar-(式中、Rcは、炭素数1~20のアルキレン基を表し、Arは、炭素数6~20のアリーレン基を表す。)である請求項1~3のいずれか1項記載の重合体。
- R5が、少なくとも1つの水素原子がフッ素原子で置換された、炭素数1~20のアルキル基、炭素数2~20のアルケニル基、炭素数2~20のアルキニル基、炭素数1~20のアルコキシ基、炭素数2~20のアルケニルオキシ基、炭素数2~20のアルキニルオキシ基、炭素数6~20のアリール基、炭素数7~20のアラルキル基、炭素数8~20のアルキルアラルキル基、炭素数2~20のヘテロアリール基、炭素数6~20のアリールオキシ基又は炭素数2~20のヘテロアリールオキシ基である請求項1~4のいずれか1項記載の重合体。
- 請求項1~5のいずれか1項記載の重合体からなる電荷輸送性物質。
- 請求項6記載の電荷輸送性物質、フッ素原子を含有しない電荷輸送性物質、ヘテロポリ酸からなるドーパント、及び有機溶媒を含む電荷輸送性ワニス。
- 前記フッ素原子を含有しない電荷輸送性物質が、アニリン誘導体である請求項7記載の電荷輸送性ワニス。
- 請求項7又は8記載の電荷輸送性ワニスを用いて作製される電荷輸送性薄膜。
- 請求項9記載の電荷輸送性薄膜を有する電子デバイス。
- 請求項9記載の電荷輸送性薄膜を有する有機エレクトロルミネッセンス素子。
- 請求項7又は8記載の電荷輸送性ワニスを基材上に塗布し、溶媒を蒸発させることを特徴とする電荷輸送性薄膜の製造方法。
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