WO2007020952A1 - 高分子材料およびそれを用いた素子 - Google Patents
高分子材料およびそれを用いた素子 Download PDFInfo
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- WO2007020952A1 WO2007020952A1 PCT/JP2006/316124 JP2006316124W WO2007020952A1 WO 2007020952 A1 WO2007020952 A1 WO 2007020952A1 JP 2006316124 W JP2006316124 W JP 2006316124W WO 2007020952 A1 WO2007020952 A1 WO 2007020952A1
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- 238000005286 illumination Methods 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 150000002466 imines Chemical group 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- LHJOPRPDWDXEIY-UHFFFAOYSA-N indium lithium Chemical compound [Li].[In] LHJOPRPDWDXEIY-UHFFFAOYSA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- YZASAXHKAQYPEH-UHFFFAOYSA-N indium silver Chemical compound [Ag].[In] YZASAXHKAQYPEH-UHFFFAOYSA-N 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- KXUHSQYYJYAXGZ-UHFFFAOYSA-N isobutylbenzene Chemical compound CC(C)CC1=CC=CC=C1 KXUHSQYYJYAXGZ-UHFFFAOYSA-N 0.000 description 1
- 125000005956 isoquinolyl group Chemical group 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GCICAPWZNUIIDV-UHFFFAOYSA-N lithium magnesium Chemical compound [Li].[Mg] GCICAPWZNUIIDV-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000004219 molecular orbital method Methods 0.000 description 1
- DCZNSJVFOQPSRV-UHFFFAOYSA-N n,n-diphenyl-4-[4-(n-phenylanilino)phenyl]aniline Chemical class C1=CC=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 DCZNSJVFOQPSRV-UHFFFAOYSA-N 0.000 description 1
- KKFHAJHLJHVUDM-UHFFFAOYSA-N n-vinylcarbazole Chemical compound C1=CC=C2N(C=C)C3=CC=CC=C3C2=C1 KKFHAJHLJHVUDM-UHFFFAOYSA-N 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006611 nonyloxy group Chemical group 0.000 description 1
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- 125000005069 octynyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C#C* 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000005003 perfluorobutyl group Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)* 0.000 description 1
- 125000005005 perfluorohexyl group Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)* 0.000 description 1
- 230000035699 permeability Effects 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
- DLRJIFUOBPOJNS-UHFFFAOYSA-N phenetole Chemical compound CCOC1=CC=CC=C1 DLRJIFUOBPOJNS-UHFFFAOYSA-N 0.000 description 1
- 125000004344 phenylpropyl group Chemical group 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 239000011574 phosphorus Chemical group 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229960002796 polystyrene sulfonate Drugs 0.000 description 1
- 239000011970 polystyrene sulfonate Substances 0.000 description 1
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 125000005551 pyridylene group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 125000005493 quinolyl group Chemical group 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- ZJMWRROPUADPEA-UHFFFAOYSA-N sec-butylbenzene Chemical compound CCC(C)C1=CC=CC=C1 ZJMWRROPUADPEA-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 239000011593 sulfur Chemical group 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical group [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000005034 trifluormethylthio group Chemical group FC(S*)(F)F 0.000 description 1
- 125000000876 trifluoromethoxy group Chemical group FC(F)(F)O* 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 239000013638 trimer Substances 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
- 238000007740 vapor deposition Methods 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
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L65/00—Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G61/02—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
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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
- C08G61/122—Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule derived from five- or six-membered heterocyclic compounds, other than imides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
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- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1092—Heterocyclic compounds characterised by ligands containing sulfur as the only heteroatom
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/14—Macromolecular compounds
- C09K2211/1408—Carbocyclic compounds
- C09K2211/1416—Condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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- C09K2211/1408—Carbocyclic compounds
- C09K2211/1425—Non-condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/188—Metal complexes of other metals not provided for in one of the previous groups
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/346—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising platinum
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Definitions
- the present invention relates to a polymer material and a device using the same.
- Non-Patent Document 1 Monthly Display, 2002, Vol. 8, September, 4 '7-5 1 page (published by Techno Times Co., Ltd.)).
- Patent Document 1 Japanese Patent Laid-Open No. 2-126,799). 0 0 4— 1 4 1 5 5).
- An object of the present invention is to provide a polymer material capable of providing an element having excellent practicality, such as white light emission and multicolor light emission, which can be driven at a low voltage, and has excellent light emission efficiency.
- the invention contains a composition comprising a fluorescent conjugated polymer (A) and a phosphorescent compound (B), or the structure of (A) and the structure of (B) are contained in the same molecule.
- the present invention provides a polymer material containing the above-described polymer, which satisfies the following conditions (1), (2), and (3).
- At least one of the emission peak wavelengths of the fluorescent conjugated polymer (A) is less than 500 nm Is
- the emission peak wavelength of the phosphorescent compound (B) is 500 nm or more.
- ET A represents the energy of the lowest excited ⁇ triplet state of the fluorescent conjugated polymer (A)
- ES B represents the ground state energy of the phosphorescent luminescent molecule (B)
- ET B represents the energy of the lowest excited triplet state of the phosphorescent compound (B).
- the polymer material of the present invention contains a composition comprising (a) a fluorescent conjugated polymer (A) and a phosphorescent compound (B), or (i) a fluorescent conjugated polymer (A ) And a phosphor having a phosphorescent light emitting molecule (B) structure in the same molecule.
- Fluorescent conjugated polymer is a conjugated polymer that exhibits at least fluorescence.
- Conjugated polymers are, for example, “The story of organic EL” (written by Katsumi Yoshino, Nikkan Kogyo Shimbun). It is a molecule in which multiple bonds and single bonds are repeatedly connected.
- Typical examples of the fluorescent synergistic polymer include a polymer having a repeating structure having the following structure or a structure obtained by appropriately combining the following structures.
- Examples of the fluorescent conjugated polymer (A) include those that do not contain an aromatic ring in the main chain (for example, polyacetylenes), or those that contain an aromatic ring in the main chain, but the chemical stability of the polymer. From the viewpoint, those containing an aromatic ring in the main chain are preferred.
- an aromatic ring such as phenylene, fluorene, dibenzothiophene, dibenzofuran, dibenzosilole, etc., which may have a substituent as described above, is mainly used as a repeating unit. What is included in the chain, and the combination of these aromatic rings Copolymers and copolymers obtained by combining other repeating units are preferred. Specific examples include a benzene ring which may have a substituent and / or a polymer compound having the following general formula (1) as a partial structure.
- n and n each independently represents an integer of 0 to 4, and R 2 each independently represents a bond with a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group or another atom.
- R 2 s when there are a plurality of R 2 s, they may be the same or different:
- examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- the alkyl group may be linear, branched or cyclic.
- the number of carbons is usually about 1 to 10, preferably 1 to 10.
- Alkenyl groups are linear, min! Either ⁇ or ring may be used.
- the number of carbon atoms is usually about 2 to 10 and preferably 2 to 10 carbon atoms.
- an ethenyl group, a propenyl group, a butenyl group, a pentenyl group, a hexenyl group, a heptenyl group, and an octenyl group are preferable.
- the alkynyl group may be linear, branched or cyclic.
- the number of carbons is usually about 2 to 10 and preferably 2 to 10 carbons.
- an edenyl group, a propynyl group, a pentynyl group, a pentynyl group, a hexynyl group, a heptynyl group, and an octynyl group are preferable. .
- the alkoxy group may be linear, branched or cyclic.
- the number of carbon atoms is usually about 1 to 10 and preferably 1 to 10 carbon atoms.
- Examples include oral hexyl group, perfluorooctyl group, methoxymethyloxy group, 2-methoxyethyloxy group, pentyloxy group,
- the alkylthio group may be linear, branched or cyclic.
- the number of carbon atoms is usually about 1 to 10 and preferably 1 to 10 carbon atoms.
- pentylthio group pentylthio group, 2-ethylhex
- the aryl group usually has about 6 to 60 carbon atoms, preferably 6 to 48.
- a phenyl group, a dialkoxyphenyl group (CC u indicates that it has 1 to 2 carbon atoms, and the same shall apply hereinafter.).
- the 'aryl group is an atomic group obtained by removing one hydrogen atom from an aromatic hydrocarbon.
- the aromatic hydrocarbon includes those having a condensed ring and those in which two or more independent benzene rings or condensed rings are bonded directly or via a group such as vinylene.
- alkoxy examples include methoxy, ethoxy, propyloxy, i-propyloxy, butoxy, i-butoxy, t-butoxy, pentyloxy, hexyloxy, cyclohexyloxy, heptyloxy, octyloxy, and 2-ethylhexyloxy
- alkoxy, decyloxy, 3,7-dimethyloctyloxy, lauryloxy and the like are exemplified.
- C 1, C 2 -C 12 alkyl phenyl group examples include a methyl phenyl group, an ethenyl phenyl group, a dimethyl benzyl group, a propyl phenyl group, a mesityl group, a methyl ethyl phenyl group, an i-propyl phenyl group, and a butyl phenyl group.
- the aryloxy group usually has about 6 to 60 carbon atoms, preferably 6 to 48.
- An alkoxyphenoxy group and a C ⁇ C ⁇ alkyl phenoxy group are preferred.
- 12 alkoxy examples include methoxy, ethoxy, propyloxy, i-butoxypyroxy, butoxy, i-butoxy, t-butoxy, pentyloxy, hexyloxy, cyclohexyloxy, heptyloxy, octyloxy, 2-ethyl Examples include xyloxy, nonyloxy, decyloxy, 3,7-dimethyloctyloxy, lauryloxy and the like.
- C ⁇ Cu alkylphenoxy group examples include methylphenoxy group, ethylphenoxy group, dimethylphenoxy group, propylphenoxy group, 1,3,5-trimethylphenoxy group, methylethylphenoxy group.
- Nonylphenoxy group, decylphenoxy group, dodecylphenoxy group and the like are exemplified. '.
- the arylthio group usually has about 6 to 60 carbon atoms, preferably 6 to 48 carbon atoms.
- Pentafuru Oro phenylthio group are exemplified , C, ⁇ C 12 Arukokishifu two thio groups, ⁇ ⁇ Ji ⁇ ⁇ 'Rukirufue two thio groups are preferred.
- the arylalkyl group usually has about 7 to 60 carbon atoms, preferably 7 to 48.
- phenyl - C ⁇ Cu alkyl group, ⁇ Ji ⁇ alkoxy phenylalanine - C ⁇ C 12 alkyl group, C ⁇ C 12 alkylphenyl - C ⁇ C 12 alkyl group, 1 one-naphthyl - C , -C 12 alkyl group, 2-naphthyl -C, -C 12 such as an alkyl group are exemplified, C, -C 12 alkoxy Kishifue two Lou ⁇ 12 alkyl group, C, ⁇ C, 2 alkylphenyl - C, ⁇ C 12 alkyl group are preferable.
- the aryloxy group usually has about 7 to 60 carbon atoms, preferably 7 to 48 carbon atoms.
- the arylalkylthio group usually has about 7 to 60 carbon atoms, and preferably 7 'to 48 carbon atoms.
- Examples include 2-naphthyl-C, .about.C 12 alkylthio groups and the like, and .about.alkoxyphenyl C! C alkylthio groups, C, .about.C 12 alkyl phenyl groups C, .about.C 12 alkylthio groups are preferred.
- the aryl alkenyl group usually has about 7 to 60 carbon atoms, preferably 7 to 48 carbon atoms.
- the arylalkynyl group usually has about 7 to 60 carbon atoms, preferably 7 to 48 carbon atoms.
- the monovalent heterocyclic group means a remaining atomic group obtained by removing one hydrogen atom from a heterocyclic compound, and usually has about 4 to 60 carbon atoms, and is preferably 0 to 4-20.
- the carbon number of the heterocyclic group does not include the carbon number of the substituent.
- a heterocyclic compound is an organic compound having a cyclic structure in which the elements constituting the ring include not only carbon atoms but also heteroatoms such as oxygen, sulfur, nitrogen, phosphorus, and boron.
- thienyl group, and 0 12 alkyl Peltier group a pyrrolyl group, a furyl group, a pyridyl group, 1-2 alkyl pyridyl group, Pi Perijiru group, quinolyl group, isoquinolyl group and the like, thienyl groups, C , ⁇ C 12 Al
- a quiltenyl group, a pyridyl group, and a C, to C 12 alkylpyridyl group are preferred.
- R 5 and R 6 each independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group or an aryl group.
- a and b each independently represent an integer of 0 or 1.
- R 5 and R 6 may be the same or different X represents the same meaning as described above.
- Y represents one O—, one S—, or one C (R 3 6 ) It is preferable that (R 37 ) —.
- (R 36 ) and (R 37 ) have the same meaning as described above.
- the fluorescent conjugated polymer (A) used in the present invention may be a copolymer containing other repeating units in addition to those represented by the general formula (1).
- Examples of other repeating units include the following (3) to (4). .
- Ar, Ar 2 , Ar 3 , Ar 4 and Ar 5 each independently represent an arylene group or a divalent heterocyclic group.
- Ar 5 , Ar 6 , Ar 7 and A r 8 each independently represent an aryl group or a monovalent heterocyclic group.
- Ar ⁇ Ar 6 , 8 1 " 7 and 8 ' may have a substituent.
- X and y each independently represents 0 or 1 s, and 0 ⁇ x + y ⁇ l. ] ⁇
- the arylene group is an atomic group obtained by removing two hydrogen atoms from an aromatic hydrocarbon, and usually has about 6 to 60 carbon atoms, preferably 6 to 20 carbon atoms.
- the aromatic hydrocarbon includes those having a condensed ring and those having two or more independent benzene rings or condensed rings bonded directly or via a group such as vinylene. Examples are given below.
- R represents an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, a 7 arylthio group, an aryl alkyl group, an aryl alkyl group, an aryl alkylthio group, an aryl alkenyl group.
- the terminal group of the conjugated polymer used in the present invention is left with a polymerization active group as it is, there is a possibility that the light emission characteristics and life when the device is made may be reduced, so even if it is protected with a stable group. good.
- Those having a conjugated bond continuous with the conjugated structure of the main chain are preferred, and examples thereof include a structure bonded to an aryl group or a heterocyclic group via a carbon-carbon bond.
- the substituents described in Chemical formula 10 of JP-A-9-45 4 78 are disclosed.
- the conjugated polymer used in the present invention may be a random, block or graft copolymer, or a polymer having an intermediate structure thereof, for example, a random copolymer having a block property. Also good. From the viewpoint of obtaining a polymer having a high quantum yield, a random copolymer having a block property and a block or graft copolymer are preferable to a complete lanthanum copolymer. If the main chain is branched and there are 3 or more ends, dendrimers are included.
- Conjugated polymer used in the present invention preferably has a number average molecular weight in terms of polystyrene is 1 0 3 to 1 0 8. More preferably, it is from 10 4 to 10 7 .
- the fluorescent conjugated polymer (A) contained in the polymer material used in the present invention, in combination with the phosphorescent compound (B), in addition to satisfying the conditions (1) to (3) includes the structure represented by the general formula (1), and further represented by the general formula (4). It is preferable from the viewpoint of practical characteristics of organic EL elements such as drive voltage and luminous efficiency. '
- the method for producing a conjugated polymer used in the polymer material of the present invention includes a step of dissolving a compound having a plurality of reactive substituents as a monomer in an organic solvent, if necessary.
- 'It can be carried out using potash or a suitable catalyst at a temperature not lower than the melting point of the organic solvent and not higher than the boiling point.
- the condensation polymerization can be carried out by using a known condensation reaction.
- a method described in JP-A-5-202355 can be mentioned. That is, polymerization by a Wittig reaction of a compound having a formyl group and a compound having a phosphonium methyl group, or a compound having a formyl group and a phosphonium methyl group, a compound having a pinyl group and a halogen atom.
- a method of polymerizing from a corresponding monomer by a Suzuki coupling reaction for example, a method of polymerizing by a Grignard reaction, a method of polymerizing by a Ni (0) complex , a method of polymerization with an oxidizer such as F e C 1 3, a method by decomposition of an intermediate polymer having a 5 electrochemically methods oxidative polymerization or an appropriate leaving group, can be exemplified.
- polymerization by Wittig reaction polymerization by Heck reaction, polymerization by K n .oevenage 1 reaction, polymerization by Suzuki coupling reaction, method by polymerization by Grignard reaction, nickel zero-valent complex
- the method of polymerizing by “0” is preferable because the structure can be easily controlled.
- the reactive substituent of the polymer raw material monomer used in the present invention is a halogen atom, an alkyl sulfonate group, an aryl sulfonate group, or an aryl alkyl sulfonate group
- a nickel zero-valent complex A production method in which condensation polymerization is carried out in the presence is preferred.
- Dihalogenated compounds bis (alkyl sulfonate) compounds, 5 bis (aryl sulfonate) compounds, bis (aryl alkyl sulfonate) compounds or halogen-alkyl sulfonate compounds, halogen aryl compounds Sulfonate compounds, Halogen-aryl alkyl sulfonate compounds, Alkyl sulfonate monoalkyl sulfonate compounds, Alkyl sulfonate toll alkyl sulfonate compounds, and aryl sulfonate-aryl alkyl sulfonate compounds 0 can be mentioned.
- the reactive substituent of the polymer raw material monomer used in the present invention is a halogen atom, an alkyl sulfonate group, an aryl sulfonate group, an aryl alkyl sulfonate group, a boric acid group, or a boron ester group.
- condensation polymerization is performed using a nickel catalyst or a palladium catalyst is preferable.
- raw material compounds include dihalogen compounds, bis (alkyl Examples thereof include a combination of a phonate compound, a bis (arylsulfonate) compound or a bis (arylalkylsulfonate) compound and a diborate compound or a diborate ester compound.
- halogen-boric acid compounds examples include monoalkyl sulfonate-boric acid compounds, aryl alkyl sulfonate-boric acid compounds, and arylalkyl sulfonate monoborate compounds.
- the organic solvent varies depending on the compound and reaction used, it is generally preferable that the solvent used is sufficiently deoxygenated to allow the reaction to proceed in an inert atmosphere in order to suppress side reactions. Further, it is preferable to perform a dehydration treatment in a circumferential manner. However, this is not the case in the case of a reaction in a two-phase system with water, such as the Su z u k i force Purinyu reaction.
- an alkali and a suitable catalyst are added suitably. These may be selected according to the reaction used.
- the alkali or catalyst is preferably one that is sufficiently dissolved in the solvent used in the reaction.
- the method of mixing the alkali or the catalyst is to slowly add the reaction solution or the catalyst solution while stirring the reaction solution under an inert atmosphere such as argon or nitrogen. A method of slowly adding the reaction solution to the solution is exemplified.
- the polymer used in the present invention is used in a polymer LED or the like, the purity of the polymer affects the performance of the device, such as light emission characteristics. Therefore, the monomer before polymerization was purified by methods such as distillation, sublimation purification, and recrystallization. It is preferable to polymerize later. Further, after the polymerization, it is preferable to carry out a purification treatment such as reprecipitation purification and fractionation by chromatography. '
- the phosphorescent compound shows light emission from a triplet excited state, and includes a compound having a metal complex structure.
- Examples of phosphorescent compounds having a metal complex structure that emits light from a triplet excited state include those conventionally used as low-molecular EL light-emitting materials. These include, for example, Nature, (1998), 395, 151, Appl. Phys. Let t. (199 9), 75 (1), 4, Proc. SPIE-Int. Soc. Opt. Eng. (2001), 4105 (Organic Light- Emi tti ng Materials and Devices IV), 119, J. Am. Chem. Soc., (2001), 123, 4304, Appl • Phys. Lett., (1997), 71 (18), 2596, Syn. Met., ( 1998), 94 (1), 103, Syn.
- the sum of the orbital coefficients of the outermost shell d orbits of the central metal in the highest occupied orbital path (HOMO) of the metal body is preferably 0.3 or more from the viewpoint of obtaining high efficiency.
- the metal complex is preferably neutral from the viewpoint of obtaining high EL efficiency.
- the central metal of a phosphorescent light emitting complex is usually a metal having an atomic number of 50 or more, which has a spin-orbit interaction, and can cause a cross-over between a singlet state and a triplet state.
- a metal having an atomic number of 50 or more which has a spin-orbit interaction, and can cause a cross-over between a singlet state and a triplet state.
- gold, platinum, iridium, osmium, rhenium, tungsten, europium, terbium, thulium, dysprosium, samarium, prasedium, gadolinium, and 'yttripium atoms are preferred, and gold, platinum, iridium, O Suminium, rhenium and tungsten atoms, more preferably gold, platinum, iridium, osmium and rhenium atoms, most preferably gold, platinum, iridium and rhenium atoms.
- a ligand of the phosphorescent light emitting complex it is preferable that carbon is contained in the coordination atom in terms of obtaining high efficiency.
- 2-phenylviridine, 2-phenylquinoline, 1_phenylisoquinoline examples include 2- or 3-phenylquinoxaline, benzo [h] quinoline, and derivatives thereof.
- the ligand may have a substituent in order to improve solubility as long as the light emission characteristics are not impaired.
- An arylene group or a halogeno group which may be present, and a plurality of Ras in the same compound may be the same or different.
- the polymer material of the present invention satisfies the following conditions (1), (2) and (3).
- At least one of the emission peak wavelengths of the fluorescent conjugated polymer (A) is less than 500 nm
- the emission peak wavelength of the phosphorescent compound (B) is 50011 m or more
- the emission peak of the fluorescent light emitting molecule has a longer wavelength than the emission peak of the fluorescent conjugated polymer.
- the emission of the fluorescent conjugated polymer is blue. It is necessary to emit light in a region close to light emission.
- ET A -ES A0 The energy difference between the ground state and the lowest excited triplet state (in order, ET A -ES A0 ) for each of the fluorescent conjugated polymer in (Eq l) and the phosphorescent light emitting molecule that emits light from the triplet excited state.
- ET B -ES B0 the difference between the energy difference of the phosphorescent light emitting molecule and the energy difference of the fluorescent conjugated polymer used as a matrix is used. Since the relative magnitude relationship is important for obtaining higher luminous efficiency, it is usually determined by a computational scientific method.
- the phosphorescent compound (A) When the phosphorescent compound (A) has a metal complex structure, the phosphorescent compound (A) is in the highest occupied molecular orbital (HOMO) calculated by the computational scientific method as long as the above (Eq l) is satisfied.
- High brightness or high luminous efficiency is obtained when the sum of the squares of the orbital coefficients of the outermost shells of the central metal in the sum of the squares of all the orbital coefficients is one third or more. It is preferable in terms of point, and more preferably 2/5 or more.
- the ground state energy and lowest excited triplet state energy of fluorescent polymers and phosphorescent materials, and the orbital coefficient of outermost shell d orbital in metal complex HOMO As computational scientific methods used to calculate the ratio of the sum of squares, molecular orbital methods and density functional methods based on semi-empirical and non-empirical methods are known.
- the quantum structure calculation program Gaussian 03 is used to calculate the optimized structure in the ground state of the triplet light-emitting compound by density functional, and the ground state HOM 0 energy level and the ground state LUMO energy.
- the level and the VOMO of each trajectory in HOMO are analyzed, and the sum of the squares of the orbital coefficients of the outermost shell d orbits of the central metal in HOMO occupies the sum of the squares of all the atomic orbital coefficients. The percentage was determined. Furthermore, using the time-dependent density functional method, the energy difference between the ground state and the lowest excited triplet state of the compound (hereinafter referred to as the lowest excited triplet energy), the ground state and the lowest excited singlet state. The energy difference (hereinafter referred to as the lowest excitation singlet energy) was calculated.
- the Hartley-Fock method (hereinafter sometimes referred to as the HF method) is used to find the optimal ground state structure, and the time ft density density functional method is used to calculate the conjugated polymer The lowest excited triplet energy of the molecule was calculated.
- the metal complex has a side chain such as an alkyl group in the ligand, the structure excluding the substituent is the calculation target structure.
- the method described in non-patent literature JOURNAL OF PHYS I CAL. CHEMI STRY A 20 02, Vol. 106, p 1634 was used. '
- the side chain is calculated as a methyl group).
- the singlet excitation energy and triplet excitation energy in the copolymer were determined by the same calculation method as in the above-mentioned homopolymer with the minimum unit considered from the copolymerization ratio as a unit. Note that the calculated value is J ouna lo f Amerian Chemi cal. Soc iety, Vol. 123, 4304 (2001).
- the HOMO, LUMO, singlet excitation energy and triplet excitation energy in the copolymer can be obtained by the same calculation method as in the above-mentioned homopolymer, with the minimum unit considered from the copolymerization ratio as a unit. it can.
- the polymer material of the present invention has the following two aspects.
- the amount of the fluorescent conjugated polymer (A) and the phosphorescent compound (B) in (a) above, the structure of the fluorescent conjugated polymer (A) in (ii '), and the phosphorescent compound (B) The amount of the structure varies depending on the type of fluorescent conjugated polymer to be combined and the characteristics to be optimized.Therefore, the amount of the fluorescent conjugated polymer (A) is 100 parts by weight.
- the phosphorescent luminescent molecule (B) is usually from 0.01 to 40 parts by weight, preferably from 0.1 to 10 parts by weight, more preferably from 0.1 to 1 part by weight. In particular, when a plurality of phosphorescent compounds having different emission peak wavelengths are included, it is preferable to reduce the content of molecules having longer wavelength emission peaks from the viewpoint of multicolor emission.
- an example of a polymer having the structure of the fluorescent conjugated polymer (A) and the structure of the phosphorescent compound (B) in the same molecule As: ..
- the phosphorescent compound (B) at the end of the fluorescent conjugated polymer (A) A polymer having a structure; a polymer having a structure of a phosphorescent compound (B) in the side chain of the fluorescent conjugated polymer (A).
- Examples of the polymer in the embodiment (ii) include the partial structure represented by the general formula (1), the number average molecular weight in terms of polystyrene is 10 3 to 10 8 , and the side chain, main chain And / or those having a phosphorescent compound structure at the terminal.
- the polymer structure having the structure of the phosphorescent compound (B) in the side chain of the fluorescent conjugated polymer (A) is represented by the following formula, for example. (LX) n
- Ar 18 is selected from the group consisting of a divalent aromatic group, or an oxygen atom, a key atom, a germanium atom, a tin atom, a phosphorus atom, a boron atom, a sulfur atom, a selenium atom, and a tellurium atom.
- 3 ⁇ 4Ar 18 has 1 to 4 groups represented by —L—X, and X represents light emission from a triplet excited state.
- Tona 'Ru may be replaced with a group selected from the group R 68, R 69 R TM, R 71 , R 72 , R 73 , R 74 , R 75 , R 76 , R 77 , R 78 , R 79 each independently comprises a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic group and a cyano group. represents a group selected from the group.
- a r 18 further alkyl groups in addition to the group represented by one L one X, an alkoxy group, an alkylthio group, Ariru group, Ariruokishi group, ⁇ Li one thio group, ⁇ Alkyl group, aryl alkoxy group, aryl alkylthio group, aryl alkenyl group, aryl alkynyl group, amino group, substituted amino group, silyl group, substituted silyl group, halogen atom, acyl group, acyloxy group, imine residue , ' May have a substituent selected from the group consisting of an amide group, an acid imide group, a monovalent heterocyclic group, a strong lpoxyl group, a substituted lpoxyl group and a cyano group.
- Ar 18 has a plurality of substituents, they may be the same or different.
- n represents an integer of 1 to 4.
- divalent aromatic groups are: phenylene, pyridinylene, pyrimidylene, naphthylene Or a ring represented by the above general formula (1).
- the polymer structure having the structure of the phosphorescent compound (B) in the main chain of the fluorescent conjugated polymer (A) is represented by the following formula, for example.
- L,, and L 2 represent the structure of the phosphorescent luminescent molecule, and the bond in the formula is bonded to the repeating unit in which the structure of the fluorescent luminescent molecule forms the polymer main chain. .
- the structure of the polymer having the structure of the phosphorescent compound (B) at the end of the fluorescent conjugated polymer (A) is represented by the following formula, for example.
- L 3 represents a monovalent group including the structure of the phosphorescent compound (B), and the bond is possessed by the phosphorescent light emitting molecule (B) ′ material and is bonded to X.
- X is a single bond, an optionally substituted alkenylene group, an optionally substituted alkynylene group, an optionally substituted arylene group, or an optionally substituted divalent complex. Represents a cyclic group.
- the polymer having the structure (B) of the phosphorescent compound in the side chain, main chain, and terminal is, for example, using a monomer having a phosphorescent light emitting part as one of the raw materials, and the above method. Can be manufactured.
- the polymer material of the present invention may further contain at least one material selected from a pore transport material, an electron transport material, and a light emitting material.
- the composition and polymer compound of the present invention are particularly useful for the production of light-emitting devices such as polymer light-emitting devices as liquid compositions.
- the liquid composition is one in which the polymer material (composition and polymer compound) of the present invention contains a solvent as necessary.
- the liquid composition is generally called ink, ink composition, solution or the like.
- this liquid composition for example, a composition in a solution state
- a similar method can be applied even when a charge transport material or a light emitting material is mixed, it is very advantageous in production.
- At the time of drying may be dried and heated at 5 0 to 1 5 0 ° about C, or may be dried under reduced pressure to about 1 0- 3 P a.
- Film formation methods using liquid compositions include spin coating, 'casting, micro-loglapia coating, gravure coating, coating, roll coating, wire-bar coating, dip coating, Coating methods such as spray coating, screen printing, flexographic printing, offset printing, and inkjet printing can be used.
- the proportion of the solvent in the liquid composition is usually 1% by weight to 99.9% by weight, preferably 60% by weight to 99.9% by weight, based on the total weight of the liquid composition. More preferably, it is 90% by weight to 99.8% by weight.
- the viscosity of the liquid composition varies depending on the printing method, but it is preferably in the range of 0.5 to 50 O mPa ⁇ s at 25 ° C.
- the composition passes through a discharge device.
- the viscosity is in the range of 0.5 to 2 O mPa's at 25 ° C. in order to prevent self-assembly and bending during discharge.
- the sum of the weights of the polymer containing the repeating units represented by the above formulas (11-1) and (1-2) and the compound exhibiting phosphorescence, or the weight of the polymer compound is obtained from the liquid composition. It is usually 20% by weight to 100% by weight, preferably 40% by weight to 100% by weight, based on the total weight of all components excluding the solvent.
- the solution contained in the liquid composition is preferably one that can dissolve or disperse components other than the solvent in the liquid composition.
- the solvent include chlorinated solvents such as chloroform, formaldehyde, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, benzene, o-dichlorobenzene, tetrahydrofuran, dioxane and the like.
- solvents may be used alone or in combination.
- Solvent types include aromatic hydrocarbon solvents and aliphatic hydrocarbon solvents from the viewpoints of solubility in organic solvents of components other than the solvent in the liquid composition, uniformity during film formation, and viscosity characteristics.
- Ester solvents and ketone solvents are preferred, toluene, xylene, ethylbenzene, jetylbenzene, trimethylbenzene, mesitylene, n-propylbenzene, i-propylbenzene, ⁇ -butylbenzene, i-butylbenzene, s-butyl Benzene, Anisol, Ethoxybenzene, 1-Methylnaphthalene, Cyclohexane, Cyclohexanone, Cyclohexylbenzene, Bicyclohexyl, Cyclohexenylcyclohexanone, n-Heptylcyclohexane, n-Hexylcyclohexane
- the type of solvent contained in the liquid composition is preferably 2 or more, more preferably 2 to 3 types, and more preferably 2 types from the viewpoints of film forming properties and device characteristics. Further preferred.
- the liquid composition contains two types of solvents, one of them may be in a solid state at 25 ° C.
- one type of solvent has a boiling point of 180 ° C or higher, and the other one type of solvent preferably has a boiling point of 180 ° C or lower, and one type of solvent has a boiling point. More preferably, the solvent has a boiling point of 200 ° C. or higher, and the other one solvent has a boiling point of 180 ° C. or lower 5.
- the component excluding the solvent from the liquid composition is dissolved in the solvent, and one of the two solvents includes At 25 ° C., it is preferable that 0.2% by weight or more of the component obtained by removing the solvent from the liquid composition is dissolved.
- the liquid composition contains three types of solvents, one or two of them may be in a solid state at 25 ° C.
- at least one of the three solvents is a solvent having a boiling point of 180 ° C or higher, and at least one solvent is a solvent having a boiling point of 180 ° C or lower.
- at least one of the three types of solvents is a solvent having a boiling point of 200 T or more and 300 ° C. or less, and at least one of the solvents is more preferably a solvent having a boiling point of 180 ° C. or less. .
- 5% of the two types of the solvent out of the three types of the solvent is dissolved in the solvent by 0.2% by weight or more of the component obtained by removing the solvent from the liquid composition.
- 0.2% by weight or more of the component excluding the solvent from the liquid composition is dissolved in the solvent.
- the solvent having the highest boiling point is 40 to 90% by weight of the total solvent contained in the liquid composition from the viewpoint of viscosity and film formability. It is preferably 0, more preferably 50 to 90% by weight, and even more preferably 65 to 85% by weight.
- a combination of anisole and bishexyl hexyl As a solvent contained in the liquid composition, from the viewpoint of viscosity and film formability, a combination of anisole and bishexyl hexyl, a! A combination of tool and cyclohexylbenzene, a combination of xylene and bihexyl hexyl, 5 combinations of xylene and cyclohexylbenzene, and a combination of mesitylene and methylbenzoate are preferred.
- solubility parameter of the solvent preferably 10 or less, and more preferably 7 or less. This solubility parameters can be obtained by the method described in “Solvent Handbook” (published by Kodansha, 1966).
- the optical element of the present invention is characterized by having a layer containing the polymer material of the present invention between electrodes composed of an anode and a cathode.
- the above light-emitting elements include polymer LEDs with an electron transport layer between the cathode and the light-emitting layer. • Polymer LEDs with a hole-transport layer between the anode and the light-emitting layer. A polymer LED with an electron transport layer between them and a hole transport layer between the anode and the light-emitting layer; a polymer with a hole blocking layer between the light-emitting layer and the cathode LED etc. are mentioned.
- the light emitting layer is a layer having a function of emitting light
- the hole transporting layer is a layer having a function of transporting holes
- the electron transporting layer is a layer having a function of transporting electrons. It is.
- the electron transport layer and the hole transport layer are collectively referred to as a charge transport layer.
- the charge blocking layer means a layer having a function of confining holes or electrons in the light emitting layer, transporting electrons and confining holes to the hole blocking layer, and transporting holes.
- the layer that confines electrons is called an electron blocking layer.
- a polymer LED having a layer containing a conductive polymer adjacent to the electrode between the at least one electrode and the light emitting layer; the electrode between the at least one electrode and the light emitting layer.
- a polymer LED with a buffer layer with an average film thickness of 2 nm or less is exemplified.
- Two or more light emitting layers, hole transport layers, and electron transport layers may be used independently.
- charge transport layers provided adjacent to the electrodes, those that have the function of improving the charge injection efficiency from the electrodes and have the effect of lowering the driving voltage of the device are particularly those of the charge injection layer (hole injection Layer, electron injection layer). .
- the above-described charge injection layer or an insulating layer having a thickness of 2 nm or less may be provided adjacent to the electrode.
- a thin buffer layer may be inserted at the interface between the charge transport layer and the light emitting layer in order to improve adhesion and prevent mixing.
- a hole blocking layer may be inserted at the interface with the light emitting layer in order to transport electrons and confine holes.
- the order and number of layers to be stacked, and the thickness of each layer can be used as appropriate in consideration of luminous efficiency and device life.
- a polymer LED provided with a charge injection layer includes a polymer LED provided with a charge injection layer adjacent to the cathode, and a charge injection layer adjacent to the anode.
- a layer containing a conductive polymer, provided between the anode and the hole transport layer, and intermediate between the anode material and the hole transport material contained in the hole transport layer A layer containing a material having an ionization potential of a value, provided between the cathode and the electron transport layer; Examples thereof include a layer containing a material having an electron affinity with a value intermediate to that of the electron transporting material contained in the child transporting layer.
- the electric conductivity of the conducting polymer is preferably from 1 0- 5 S / cm or more 10 3 SZcm, leak current between light emitting pixels for the smaller is more preferably at most 10- 5 SZcm least 10 2 SZcm, 10- 5 S Zcm least 1 O'SZcm less is more preferred.
- the electrical conductivity of the conducting polymer in order to more than 10- 5 S cm or more 10 3 SZ cm, a suitable amount of ions de Solo flop into the conducting polymer.
- the kind of ions to be doped is “anoshi” for the hole injection layer and “click” for the electron injection layer.
- Examples of anions include polystyrene sulfonate ions, alkylbenzene sulfonate ions, camphor sulfonate ions, etc.
- examples of cations include lithium ions, sodium ions, potassium ions, tetraptyl ammonium ions. Etc. are exemplified.
- the film thickness of the charge injection layer is, for example, 1 nm to: L 00 nm, and 2 nm to 50 nm is preferable. '
- the material used for the charge injection layer may be selected as appropriate in relation to the material of the electrode and the adjacent layer ', polyaniline and its derivatives, polythiophene and its derivatives: polypyrrole ⁇ and its derivatives, polyphenylene vinylene And derivatives thereof, polyphenylene vinylene and derivatives thereof, polyquinoline and derivatives thereof, polyquinoxaline and derivatives thereof, conductive polymers such as polymers containing an aromatic amine structure in the main chain or side chain, metal phthalocyanine (copper Phthalocyanine) and the like.
- An insulating layer having a thickness of 2 nm or less has a function of facilitating charge injection.
- the material for the above-mentioned layer include metal fluorides, metal oxides, and organic insulating materials.
- a polymer ED with an insulating layer with a thickness of 2 nm or less is an ED, a polymer LED with an insulating layer with a thickness of 2 nm or less adjacent to the cathode, and a film with a thickness of 2 nm or less adjacent to the anode.
- Anode Z Insulating layer with a film thickness of 2 nm or less r) Anode Z Light-emitting layer Z Insulation layer / cathode with film thickness of 2 nm or less
- Anode Z Insulating layer with a film thickness of 2 nm or less
- the hole blocking layer has a function of transporting electrons and confining holes transported from the anode, and is provided at the cathode side interface of the light emitting layer and is larger than the ionization potential of the light emitting layer. It is composed of a material having an ionization potential, such as bathocuproine, 8'-hydroxyquinoline or a metal complex of a derivative thereof.
- the thickness of the hole blocking layer is, for example, 1 nm to 100 nm, and preferably 2 nm to 50 nm.
- the film formation method from the liquid composition includes spin coating method, casting method, micro log rapier coating method, gravure coating method, bar coat method, roll coating method, wire bar coating method, dip coating method, spray coating.
- Application methods such as a printing method, a screen printing method, a flexographic printing method, an offset printing method, and an ink jet printing method can be used.
- Printing methods such as a screen printing method, a flexographic printing method, an offset printing method, and an ink jet printing method are preferable in that pattern formation and multicolor coating are easy.
- the film thickness of the light emitting layer varies depending on the material used, and may be selected so that the drive voltage and the light emission efficiency are appropriate.
- the thickness is 1 nm to '1, preferably 2 nm to 5 0 nm, more preferably 5 nm to 200 nm. '
- a light emitting material other than the light emitting material of the present invention may be mixed and used in the light emitting layer.
- a light emitting layer containing a light emitting material other than the present invention may be laminated with a light emitting layer containing a light emitting material of the present invention.
- low molecular weight compounds include naphthalene derivatives, anthracene or derivatives thereof, perylene or derivatives thereof, dyes such as polymethine, xanthene, coumarin, and cyanine, and metal complexes of 8-hydroxyquinoline or derivatives thereof.
- An aromatic amine, tetraphenylcyclopentene or a derivative thereof, or tetraphenylbutadiene or a derivative thereof can be used.
- the hole transport material used is polyvinyl carbazole or a derivative thereof, polysilane or a derivative thereof, a polysiloxane derivative having an aromatic amine in the side chain or the main chain.
- JP-A-6 3-7 0 2 5 7, JP-A-6 3-17 5 8 60, JP-A-2-13 5 3 59 Gazette, 2-1 3 5 3 6 1 Gazette, 2-2 0 9 9 8 8 Gazette, 3-3 7 9 9 2 Gazette, 3-1 5 2 1 8 4 Gazette Examples are shown here.
- a hole transport material used for the hole transport layer polyvinyl carbazol or a derivative thereof, polysilane or a derivative thereof, a polysiloxane derivative having an aromatic amine compound group in a side chain or a main chain
- Polymer hole transport such as polyaniline or its derivative, polythiophene or its derivative, poly (p-phenylenevinylene) or its derivative, or poly (2,5-Chenylenepinylene) or its derivative
- the material is preferred, and more preferably a polyvinyl carbazole or a derivative thereof, a polysilane or a derivative thereof, or a polysiloxane derivative having an aromatic amine in a side chain or main chain.
- a low molecular hole transport material it is preferable to use it dispersed in a polymer binder.
- Polypinylcarbazole or a derivative thereof can be obtained, for example, from a vinyl monomer by cation polymerization or radical polymerization.
- polysiloxane or its derivatives have almost no hole transporting property in the siloxane skeleton structure, those having the structure of the above low molecular hole transporting material in the side chain or main chain are preferably used.
- the method of forming the hole transport layer particularly those having a hole transporting aromatic amine in the side chain or main chain, but for low molecular hole transport materials, a polymer binder
- a method of forming a film from the mixed solution is exemplified.
- a method by film formation from a solution is exemplified. '
- the solvent used for film formation from a solution is not particularly restricted providing it can dissolve a hole transport material.
- the solvent include chlorine solvents such as chloroform, methylene chloride and dichloroethane; ether solvents such as tetrahydrofuran; aromatic hydrocarbon solvents such as toluene and xyle; ketone solvents such as acetone and methyl ethyl ketone; Examples are ester solvents such as ethyl acetate, butyl acetate, and ethyl cellosolve acetate.
- Film deposition methods from solution include spin coating from solution, casting method, micro gravure coating method, gravure coating method, bar coating method, roll coating method, wire bar coating method, dip coating method, spray coating Application methods such as a printing method, a screen printing method, a flexographic printing method, an offset printing method, and an ink jet printing method can be used.
- the polymer binder to be mixed those that do not extremely inhibit charge transport are preferable, and those that do not strongly absorb visible light are suitably used.
- the high molecular weight binder include polycarbonate, polyacrylate, polymethyl acrylate, polymethyl methacrylate, polystyrene, polyvinyl chloride, polysiloxane and the like. '..
- the film thickness of the hole transport layer varies depending on the material used and may be selected so that the drive voltage and the light emission efficiency are appropriate, but at least no pinholes are generated. Thickness is necessary, and if it is too thick, the drive voltage of the element increases, which is not preferable. Therefore, the thickness T of the hole transport layer is, for example, 1 nm to 1 m, preferably 2 nm to 500 nm, and more preferably 5 nm to 200 nm.
- the polymer LED of the present invention has an electron transport layer
- known electron transport materials can be used, such as oxadiazole derivatives, anthraquinodimethane or derivatives thereof, benzoquinone or derivatives thereof, naphthoquinone or derivatives thereof.
- oxadiazole derivatives benzoquinone or ⁇ ⁇ derivatives, anthraquinone or derivatives thereof, or metal complexes of 8-hydroxyquinoline or derivatives thereof, polyquinoline or derivatives thereof, polyquinoxaline or derivatives thereof, polyfluorene or derivatives thereof Derivatives are preferred, and 2- (4-biphenylyl) -5- (4't-butylphenyl) -1,3,4-oxadiazol, benzoquinone, anthraquinone, tris (8-quinolinol) aluminum, and polyquinoline preferable.
- the method for forming the electron transport layer there are no particular restrictions on the method for forming the electron transport layer, but for low molecular weight electron transport materials, the vacuum deposition method from powder, or by film formation from a solution or molten state, the polymer electron transport material may be solution or Each method is exemplified by film formation from a molten state.
- a polymer binder When forming a film from a solution or a molten state, a polymer binder may be used in combination.
- the solvent used for film formation from a solution is not particularly limited as long as it can dissolve an electron transport material and / or a polymer binder.
- the solvent include chlorine solvents such as chloroform, methyl chloride and dichloroethane; ether solvents such as tetrahydrofuran; aromatic hydrocarbon solvents such as toluene and xylene; ketones such as acetone and methyl ethyl ketone.
- the solvent include ester solvents such as a solvent, ethyl acetate, butyl acetate, and ethyl cellosolve acetate. ⁇
- the film formation method from a solution or molten state includes spin coating method, casting method, micro gravure coating method, gravure coating method, bar coating method, roll coating method, wire barco method, dipco method, spray Coating methods such as coating, screen printing, flexographic printing, offset printing, and inkjet printing can be used. Monkey.
- polymer binder to be mixed those not extremely disturbing charge transport are preferable, and those that do not strongly absorb visible light are suitably used.
- polymer binder poly (N-vinylcarbazol), polyaniline or a derivative thereof, polythiophene or a derivative thereof, poly (p-benylene vinylene) or a derivative thereof, poly (2, 5-Chenylenevinylene) or derivatives thereof, polycarbonate, polyacrylate, polymethyl acrylate, polymethyl methacrylate, polystyrene, polyvinyl chloride, or polysiloxane. '
- the film thickness of the electron transport layer varies depending on the material used, and it may be selected so that the drive voltage and the light emission efficiency are appropriate, but at least a thickness that does not cause pinholes is required. If the thickness is too thick, the drive voltage of the element increases, which is not preferable. Accordingly, the film thickness of the electron transport layer is, for example, 1 nm to 1 im, preferably 2 nm to 500 nm, and more preferably 5 nm to 200 nm.
- the substrate for forming the polymer LED of the present invention may be any substrate that does not change when forming electrodes and forming each layer of the polymer LED.
- glass, plastic, polymer film, silicon substrate Etc. are exemplified.
- the opposite electrode is preferably transparent or translucent.
- At least one of the electrodes composed of an anode and a cathode is transparent or translucent, and the anode side is transparent or translucent.
- a conductive metal oxide film, a translucent metal thin film, or the like As the material of the anode, a conductive metal oxide film, a translucent metal thin film, or the like is used. Specifically, films made of conductive glass composed of indium oxide, zinc oxide, tin oxide, and their composites such as indium tin oxide (ITO), indium zinc zinc oxide, etc. ( NESA, etc.), gold, platinum, silver, copper, etc. are used, and ITO, indium / zinc / oxide, and tin oxide are preferable. Examples of the production method include vacuum deposition, sputtering, ion plating, and plating. In addition, an organic transparent conductive film such as polyaniline or a derivative thereof, polythiophene or an derivative thereof may be used as the anode.
- the film thickness of the anode can be appropriately selected in consideration of light transmission and electrical conductivity. For example, from 10 nm to 10 nm, preferably from 20 nm to 1 zm, and more preferably from 50 nm to 500 nm.
- a layer with a thickness of 2 nm or less may be provided.
- the material of the cathode used in the polymer LED of the present invention is preferably a material having a low work function.
- metals such as lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, barium, aluminum, scandium, vanadium, zinc, yttrium, indium, cerium, samarium, europium, terbium, ytterbium, and the like
- Graphite 'intercalation compound or the like is used.
- the cathode may have a laminated structure of two or more layers.
- the film thickness of the cathode can be appropriately selected in consideration of electric conductivity and durability. For example, it is 10 nm to 10 / m, Preferably it is 20 nm-1 zm, More preferably, it is 50 nm-500 nm.
- a vacuum deposition method, a sputtering method, a laminating method in which a metal thin film is thermocompression-bonded, or the like is used.
- a layer made of a conductive polymer or a layer made of metal oxide, metal fluoride, organic insulating material or the like with an average film thickness of 2 nm or less is provided between the cathode and the organic layer.
- a protective layer for protecting the polymer LED may be attached after the cathode is produced. In order to stably use the polymer LED for a long period of time, it is preferable to attach a protective layer and Z or a protective cover in order to protect the device from the outside.
- the protective layer a polymer compound, metal oxide, metal fluoride, metal boride and the like can be used.
- the protective par is a glass plate and the surface is subjected to low water permeability treatment.
- a plastic plate or the like can be used, and a method in which the cover is bonded to the element substrate with a heat effect resin or a photo-curing resin and sealed is preferably used. If the space is maintained using a spacer, it is easy to prevent the element from being scratched. If an inert gas such as nitrogen or argon is sealed in the space, the cathode can be prevented from being oxidized. Further, a desiccant such as barium oxide can be installed in the space in the manufacturing process. It becomes easy to suppress the adsorbed moisture from damaging the device. Of these, it is preferable to take one or more measures.
- the polymer light-emitting device of the present invention can be used for a backlight of a planar light source, a segment display device, a dot matrix display device or a liquid crystal display device.
- the planar anode and cathode may be arranged so as to overlap each other.
- both the anode and the cathode may be formed in stripes and arranged so as to be orthogonal to each other. Partial color display and multi-power display are possible by coating different types of luminescent materials with different luminescent colors or by using color filters or luminescence conversion filters.
- the dot matrix element can be driven passively or may be driven actively in combination with TFT or the like.
- planar light-emitting element is a self-luminous thin type and can be suitably used as a planar light source for a backlight of a liquid crystal display device or a planar illumination light source. If a flexible substrate is used, it can also be used as a curved light source or display device.
- examples will be shown to describe the present invention in more detail, but the present invention is not limited thereto. Is not to be done.
- polystyrene-equivalent number average molecular weight is gel permeation chromatography using te, trahydrofuran as a solvent (GPC: HLC-8220 GPC, manufactured by Tosohichi or SCL-10A, manufactured by Shimadzu Corporation) Determined by
- a glass substrate with a 150 nm thick ITO film formed by sputtering is spin-coated using a solution of poly (ethylene dioxythiophene) -nopolystyrene sulfonic acid (Peier, Baytro nP) by spin coating. And dried on a hot plate at 200 ° C. for 10 minutes. Next, a film was formed at a rotational speed of 1000 rpm by spin coating using the prepared toluene solution. The film thickness was about 10.0 nm.
- the fluorescent polymer compound (1) emits fluorescence with a peak wavelength of 435 nm
- the fluorescent polymer compound (2) emits fluorescence with a peak wavelength of 480 nm
- the phosphorescent compound (P 1) emits phosphorescence with a peak wavelength of 510 nm.
- Show. 'The device showed light emission of about 100 cdZm 2 at about 5 V, and the maximum luminance was 30000 cdZm 2 or more. The maximum luminous efficiency was 3: O c dZA.
- Fluorescent polymer (1) Fluorescent polymer (2)
- Phosphorescent compound (PI) The fluorescent polymer compounds (1) and '(2) were synthesized according to the method described in JP-A-2004-143419. '.
- the fluorescent polymer compound (2) was synthesized according to the method described in JP-A-2004-002654.
- the phosphorylated compound (P 1) was synthesized according to the method described in WO 03 ⁇ 040256 A2.
- the difference between the lowest excited triplet energy and the ground state energy of the fluorescent polymer compound (1) calculated by computational science was 2.08 eV.
- the difference between the lowest excited triplet energy and the ground state energy of the phosphorescent compound () calculated by computational science was 2. OO eV. From the above, it was confirmed that the fluorescent polymer compounds (1) and (2) have a larger difference between the lowest excited triplet energy and the ground state energy than the phosphorescent compound (P1). ,
- the chemical structure to be calculated is that for the fluorescent polymer compound (1).
- the structure of the phosphorescent compound () was optimized by the 3 LYP level density functional method.
- the basis function lanl2dz was used for iridium contained in the phosphorescent compound (P1), and 6-31g * was used for other atoms in the phosphorescent compound (P1).
- the B3LYP level time-dependent density functional (TDDFT) method uses the lowest excited singlet energy and the lowest excited triplet. The term energy was obtained.
- the structure is optimized using the eight-tri-fock method, and the lowest excitation triplet energy is obtained by the time-dependent density functional method at the B 3 P 86 level. Asked. At that time, 6-31g * was used as the basis function.
- the validity of simplifying the calculated chemical structure as described above is based on the method described in JP-A-2005-126 '686 that the dependence of the side chain length on the minimum triplet excitation energy is small.
- the octyl group at the 9 and 9 'position of the fluorene ring of the chemical structure to be calculated is CH 3
- the fluorescent polymer compound (2) Jibenso 'Chiofen ring 3 the 6-position of Okutokishi groups Ji calculated in a simplified manner and OCH 3.
- the EL device was prepared.
- the fluorescent polymer compound (3) was synthesized according to the method described in JP-A-2004-143419.
- a glass substrate with a 150 nm thick ITO film formed by sputtering is spin-coated with a solution of poly (ethylene dioxythiophene) / polystyrene sulfonic acid (Peier, Baytro nP) by spin coating.
- a film was formed with a thickness and dried on a hot plate at 200 ° C. for 10 minutes.
- growth was performed at a rotational speed of 2500 rpm by spin coating using the Kuroguchi form solution prepared above. Furthermore, this was dried in a nitrogen gas atmosphere at 130 for 1 hour, and then barium was deposited at about 5 nm as a cathode, and then aluminum was deposited at about 80 nm to produce an EL device.
- the difference between the lowest excited triplet energy of the phosphorescent compound (P 2) and the energy of the ground state calculated by computational science is 2. 49 eV, and the lowest excited triplet of the fluorescent polymer compound (3) It is 0. '15 eV higher than the difference between the term energy and the ground state energy (2.34 e V), which satisfies (Eq l).
- Phosphorescent compound (P2) The sum of the squares of the orbital coefficients of the outermost shell d orbitals of the central metal in HOMO is 54% of the sum of the squares of the total atomic orbital coefficients, which is one third That was all.
- a 4 wt% black mouth form solution was prepared, and an EL device was produced in the same manner as in Example 2.
- the light emitting layer was formed by spin coating at a rotational speed of 2500 rpm.
- fluorescence emission from the fluorescent polymer compound (3) peak wavelength: 415 nm
- emission from the phosphorescent compound (P1) peak wavelength: 625 nm
- the device showed light emission of 100 c dZm 2 at about 6.V, and the maximum luminance was about 1000 c dZm 2 and high luminance was obtained.
- An EL device was produced in the same manner as in Example 3 by using the following phosphorescent compound (P1-R) instead of the phosphorescent compound (P1) described in Example 3.
- the light-emitting layer is formed by spin coating. The film was formed at a rotation speed of 2500 rpm.
- P 1- R was obtained from American Dish Source.
- an EL device was produced in the same manner as in Example 1.
- the light emitting layer was formed by spin coating at a rotational speed of 1300 rpm.
- the polymer phosphorescent compound (4) was prepared according to the method described in JP-A-2005-226066. Synthesized.
- the difference between the lowest excited triplet lowest excited triplet energy and the ground state energy of the phosphorescent part of the polymer phosphorescent compound (4) calculated by computational science method is 2.00 eV, otherwise
- the difference between the lowest excited triplet energy and the ground state energy of 2.34 eV is the difference between the lowest excited triplet lowest excited triplet energy of the polymer compound (3) and the ground state energy.
- the difference between the lowest excited triplet energy and the ground state energy of the fluorescent polymer compound (5) was larger than that of the fluorescent polymer compound (3).
- the phosphorescence of the polymer phosphorescent polymer compound (4) The polymer part other than the light emitting part, the polymer compounds (3) and (.5) It was confirmed that the difference between the lowest excited triplet energy and the ground state energy was larger than that of the phosphorescent light emitting part.
- the calculation target chemical structure is the same calculation target structure as that of the phosphorescent compound (P 1) described in Example 1 for the phosphorescent light emitting part of the polymer phosphorescent compound (4).
- the polymer part other than the phosphorescent part of the light-emitting compound (4) and the fluorescent polymer compound (3) is the same calculation target structure as that of the phosphorescent compound (P 1) described in Example 1 for the phosphorescent light emitting part of the polymer phosphorescent compound (4).
- the polymer material of the present invention can emit multicolor light and white light, can be driven at a low voltage, and has excellent practicality such as excellent luminous efficiency. Therefore, the polymer material of the present invention can be suitably used as a light emitting material of a polymer LED.
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Abstract
Description
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EP06796481.7A EP1921112B1 (en) | 2005-08-12 | 2006-08-10 | Polymeric material and element employing the same |
US11/997,161 US8274074B2 (en) | 2005-08-12 | 2006-08-10 | Polymer material and device using the same |
KR1020087005653A KR101294988B1 (ko) | 2005-08-12 | 2006-08-10 | 고분자 재료 및 이것을 사용한 소자 |
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Also Published As
Publication number | Publication date |
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US8274074B2 (en) | 2012-09-25 |
EP1921112A4 (en) | 2010-03-24 |
TWI415920B (zh) | 2013-11-21 |
CN101233191A (zh) | 2008-07-30 |
BRPI0614334A2 (pt) | 2011-03-22 |
EP1921112B1 (en) | 2018-02-21 |
JP2011238965A (ja) | 2011-11-24 |
KR20080039481A (ko) | 2008-05-07 |
JP5454527B2 (ja) | 2014-03-26 |
TW200718773A (en) | 2007-05-16 |
US20100283038A1 (en) | 2010-11-11 |
KR101294988B1 (ko) | 2013-08-08 |
EP1921112A1 (en) | 2008-05-14 |
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