JP4769551B2 - 塗布型低分子キャリア輸送性材料、発光材料およびインキ - Google Patents
塗布型低分子キャリア輸送性材料、発光材料およびインキ Download PDFInfo
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- JP4769551B2 JP4769551B2 JP2005326155A JP2005326155A JP4769551B2 JP 4769551 B2 JP4769551 B2 JP 4769551B2 JP 2005326155 A JP2005326155 A JP 2005326155A JP 2005326155 A JP2005326155 A JP 2005326155A JP 4769551 B2 JP4769551 B2 JP 4769551B2
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- 239000000463 material Substances 0.000 title claims description 129
- 238000000576 coating method Methods 0.000 title description 18
- 239000011248 coating agent Substances 0.000 title description 15
- 150000001875 compounds Chemical class 0.000 claims description 65
- 125000001424 substituent group Chemical group 0.000 claims description 54
- 125000003118 aryl group Chemical group 0.000 claims description 18
- HGJYDHFRXRTNGV-VSGBNLITSA-N 9-[(1r,2r)-2-carbazol-9-ylcyclobutyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1[C@@H]1CC[C@H]1N1C2=CC=CC=C2C2=CC=CC=C21 HGJYDHFRXRTNGV-VSGBNLITSA-N 0.000 claims description 17
- 239000003960 organic solvent Substances 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
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- 239000002904 solvent Substances 0.000 description 19
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 15
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 14
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- 238000000695 excitation spectrum Methods 0.000 description 9
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- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
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- 229910052757 nitrogen Inorganic materials 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
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- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
- 101150003085 Pdcl gene Proteins 0.000 description 4
- 125000000641 acridinyl group Chemical group C1(=CC=CC2=NC3=CC=CC=C3C=C12)* 0.000 description 4
- FZEYVTFCMJSGMP-UHFFFAOYSA-N acridone Chemical class C1=CC=C2C(=O)C3=CC=CC=C3NC2=C1 FZEYVTFCMJSGMP-UHFFFAOYSA-N 0.000 description 4
- 125000005577 anthracene group Chemical group 0.000 description 4
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- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 4
- 125000003396 thiol group Chemical group [H]S* 0.000 description 4
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 3
- KZPYGQFFRCFCPP-UHFFFAOYSA-N 1,1'-bis(diphenylphosphino)ferrocene Chemical compound [Fe+2].C1=CC=C[C-]1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=C[C-]1P(C=1C=CC=CC=1)C1=CC=CC=C1 KZPYGQFFRCFCPP-UHFFFAOYSA-N 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 3
- DTFKRVXLBCAIOZ-UHFFFAOYSA-N 2-methylanisole Chemical compound COC1=CC=CC=C1C DTFKRVXLBCAIOZ-UHFFFAOYSA-N 0.000 description 3
- IHQFCGFAJBMHHN-UHFFFAOYSA-N 3-tert-butyl-2,3,4,9-tetrahydro-1h-carbazole Chemical compound N1C2=CC=CC=C2C2=C1CCC(C(C)(C)C)C2 IHQFCGFAJBMHHN-UHFFFAOYSA-N 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 3
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical group C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- XJHABGPPCLHLLV-UHFFFAOYSA-N benzo[de]isoquinoline-1,3-dione Chemical group C1=CC(C(=O)NC2=O)=C3C2=CC=CC3=C1 XJHABGPPCLHLLV-UHFFFAOYSA-N 0.000 description 3
- IPWKHHSGDUIRAH-UHFFFAOYSA-N bis(pinacolato)diboron Chemical compound O1C(C)(C)C(C)(C)OB1B1OC(C)(C)C(C)(C)O1 IPWKHHSGDUIRAH-UHFFFAOYSA-N 0.000 description 3
- XQIMLPCOVYNASM-UHFFFAOYSA-N borole Chemical group B1C=CC=C1 XQIMLPCOVYNASM-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 description 3
- 150000001793 charged compounds Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
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- 230000005284 excitation Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 238000001819 mass spectrum Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- KKFHAJHLJHVUDM-UHFFFAOYSA-N n-vinylcarbazole Chemical compound C1=CC=C2N(C=C)C3=CC=CC=C3C2=C1 KKFHAJHLJHVUDM-UHFFFAOYSA-N 0.000 description 3
- 125000001624 naphthyl group Chemical group 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 125000002971 oxazolyl group Chemical group 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229920002098 polyfluorene Polymers 0.000 description 3
- 229920000123 polythiophene Polymers 0.000 description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 150000003967 siloles Chemical group 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- 125000005504 styryl group Chemical group 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002076 thermal analysis method Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- FNQJDLTXOVEEFB-UHFFFAOYSA-N 1,2,3-benzothiadiazole Chemical group C1=CC=C2SN=NC2=C1 FNQJDLTXOVEEFB-UHFFFAOYSA-N 0.000 description 2
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical group C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 2
- FKASFBLJDCHBNZ-UHFFFAOYSA-N 1,3,4-oxadiazole Chemical group C1=NN=CO1 FKASFBLJDCHBNZ-UHFFFAOYSA-N 0.000 description 2
- 125000003363 1,3,5-triazinyl group Chemical group N1=C(N=CN=C1)* 0.000 description 2
- OZKOMUDCMCEDTM-UHFFFAOYSA-N 1,7-phenanthroline Chemical group C1=CC=C2C3=NC=CC=C3C=CC2=N1 OZKOMUDCMCEDTM-UHFFFAOYSA-N 0.000 description 2
- HBBKKZVRZMEYOS-UHFFFAOYSA-N 1,8-phenanthroline Chemical group N1=CC=C2C3=NC=CC=C3C=CC2=C1 HBBKKZVRZMEYOS-UHFFFAOYSA-N 0.000 description 2
- AJCSVUVYIMRJCB-UHFFFAOYSA-N 1,9-phenanthroline Chemical group C1=NC=C2C3=NC=CC=C3C=CC2=C1 AJCSVUVYIMRJCB-UHFFFAOYSA-N 0.000 description 2
- XRZWQEBDHIAHDX-UHFFFAOYSA-N 2,8-phenanthroline Chemical group C1=NC=CC2=C(C=NC=C3)C3=CC=C21 XRZWQEBDHIAHDX-UHFFFAOYSA-N 0.000 description 2
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical group C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 description 2
- CFOIBEJBQITLOX-UHFFFAOYSA-N 2,9-phenanthroline Chemical group C1=CN=CC2=C(C=NC=C3)C3=CC=C21 CFOIBEJBQITLOX-UHFFFAOYSA-N 0.000 description 2
- GEQBRULPNIVQPP-UHFFFAOYSA-N 2-[3,5-bis(1-phenylbenzimidazol-2-yl)phenyl]-1-phenylbenzimidazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2N=C1C1=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=C1 GEQBRULPNIVQPP-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- HLTQJJLFTXOYSX-UHFFFAOYSA-N 3,7-phenanthroline Chemical group N1=CC=C2C3=CC=CN=C3C=CC2=C1 HLTQJJLFTXOYSX-UHFFFAOYSA-N 0.000 description 2
- SWSBZLMSDYTUAA-UHFFFAOYSA-N 3,8-phenanthroline Chemical group N1=CC=C2C(C=CN=C3)=C3C=CC2=C1 SWSBZLMSDYTUAA-UHFFFAOYSA-N 0.000 description 2
- DATYUTWESAKQQM-UHFFFAOYSA-N 4,7-phenanthroline Chemical group C1=CC=C2C3=CC=CN=C3C=CC2=N1 DATYUTWESAKQQM-UHFFFAOYSA-N 0.000 description 2
- NSPMIYGKQJPBQR-UHFFFAOYSA-N 4H-1,2,4-triazole Chemical group C=1N=CNN=1 NSPMIYGKQJPBQR-UHFFFAOYSA-N 0.000 description 2
- CAHQGWAXKLQREW-UHFFFAOYSA-N Benzal chloride Chemical compound ClC(Cl)C1=CC=CC=C1 CAHQGWAXKLQREW-UHFFFAOYSA-N 0.000 description 2
- ZPLDFKRKWFNQDC-UHFFFAOYSA-N BrC1=CC=C2N(C(CC3)C3N(C(C=CC(Br)=C3)=C3C3=C4)C3=CC=C4Br)C(C=CC(Br)=C3)=C3C2=C1 Chemical compound BrC1=CC=C2N(C(CC3)C3N(C(C=CC(Br)=C3)=C3C3=C4)C3=CC=C4Br)C(C=CC(Br)=C3)=C3C2=C1 ZPLDFKRKWFNQDC-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 238000001157 Fourier transform infrared spectrum Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002841 Lewis acid Substances 0.000 description 2
- QEPWCVZAHXWRDO-UHFFFAOYSA-N N-(3-bromophenyl)-N-(2-phenylphenyl)naphthalen-1-amine Chemical compound C1=CC=C(C=C1)C2=CC=CC=C2N(C3=CC(=CC=C3)Br)C4=CC=CC5=CC=CC=C54 QEPWCVZAHXWRDO-UHFFFAOYSA-N 0.000 description 2
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000006887 Ullmann reaction Methods 0.000 description 2
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical group C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical group C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 2
- 125000005336 allyloxy group Chemical group 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical group C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 125000006269 biphenyl-2-yl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C1=C(*)C([H])=C([H])C([H])=C1[H] 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 125000004556 carbazol-9-yl group Chemical group C1=CC=CC=2C3=CC=CC=C3N(C12)* 0.000 description 2
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- 239000003054 catalyst Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
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- 238000004132 cross linking Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- HHNHBFLGXIUXCM-GFCCVEGCSA-N cyclohexylbenzene Chemical compound [CH]1CCCC[C@@H]1C1=CC=CC=C1 HHNHBFLGXIUXCM-GFCCVEGCSA-N 0.000 description 2
- NXQGGXCHGDYOHB-UHFFFAOYSA-L cyclopenta-1,4-dien-1-yl(diphenyl)phosphane;dichloropalladium;iron(2+) Chemical compound [Fe+2].Cl[Pd]Cl.[CH-]1C=CC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1.[CH-]1C=CC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 NXQGGXCHGDYOHB-UHFFFAOYSA-L 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 125000005266 diarylamine group Chemical group 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 description 2
- 125000005677 ethinylene group Chemical group [*:2]C#C[*:1] 0.000 description 2
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 2
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 2
- 238000007646 gravure printing Methods 0.000 description 2
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- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 125000005447 octyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 125000004274 oxetan-2-yl group Chemical group [H]C1([H])OC([H])(*)C1([H])[H] 0.000 description 1
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- 150000004880 oxines Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- HKOOXMFOFWEVGF-UHFFFAOYSA-N phenylhydrazine Chemical compound NNC1=CC=CC=C1 HKOOXMFOFWEVGF-UHFFFAOYSA-N 0.000 description 1
- 229940067157 phenylhydrazine Drugs 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
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- 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
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Images
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- Electroluminescent Light Sources (AREA)
- Indole Compounds (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
これに対し、低分子材料であっても、非対称性の立体的なアモルファス性分子構造にすることで結晶化を防ぐことが可能である(例えば、非特許文献1,2参照)ため、このような分子構造の低分子材料により有機膜を形成することが考えられる。
PEDOT/PSS膜は、電気抵抗が低く、かつ表面のイオン化エネルギーを、ITOのイオン化エネルギーである4.8eV程度から5.1〜5.3eVに高めて、正孔注入を促進することができる。また、ITO電極表面の凸凹を平滑化し、ショートを防ぐという利点もある。
前記式(1)における置換基A1〜A4の少なくとも1つは、芳香族第3級アミンから誘導された1価の基、または置換若しくは無置換のジアリールアミン基、または置換若しくは無置換の9H−カルバゾール−9−イル基とすることができる。
上記式(6)により表される、トランス−1,2−ビス(3,6−ジ{3−[N−(2−ビフェニル)−1−ナフチルアミノ]フェニル}−9H−カルバゾール−9−イル)シクロブタンの合成
1.下記反応式による、中間体トランス−1,2−ビス(9H−カルバゾール−9−イル)シクロブタン(式(2))の合成
実施例1で得た、上記式(6)により表される化合物の物性測定
SSC5200熱分析システム(セイコー電子工業製)を用いて、20℃/minの昇温速度で式(6)により表される化合物の粉体をDSC測定した。Tgは164℃(転移の中間温度。転移開始温度では140℃)であった。
上記式(7)により表されるトランス−1,2−ビス(3,6−ビス{4‐[5−(4−tert−ブチルフェニル)−1,3,4−オキサジアゾール−2−イル]フェニル}−9H−カルバゾール−9−イル)シクロブタンの合成
1.下記反応式による、式(11)により表される中間体N−(4−ブロモベンゾイル)−N'−(4−tert−ブチルベンゾイル)ヒドラジンの合成
実施例3で得た、上記式(7)により表される化合物の物性測定
SSC5200熱分析システム(セイコー電子工業製)を用いて、20℃/minの昇温速度で、実施例3で得た式(7)により表される化合物の粉体をDSC測定した。Tgは149℃(転移の中間温度、転移開始温度では140℃)であった。
トランス−1,2−ビス[3,6−ジ(3-tert−ブチル−9H−カルバゾール−9−イル)−9H−カルバゾ−ル-9−イル]シクロブタンの合成
1.下記反応式による、式(14)により表される、中間体3−tert−ブチル−1,2,3,4−テトラヒドロ−9H−カルバゾールの合成
実施例5で得た、上記式(16)により表される化合物の物性測定
SSC5200熱分析システム(セイコー電子工業製)を用いて、20℃/minの昇温速度で、実施例5で得た式(16)により表される化合物の粉体をDSC測定した。Tgは234℃(転移の中間温度。転移開始温度では224℃)であった。
下記式(17)により表される正孔輸送材料(分子量:589、Tg:101℃、ガラス転移の始めは98℃)12.5mgを2mlのクロロホルムに溶解し、1000rpmの回転速度でITO膜付ガラス板上にスピンコートしたところ、52nmの厚さの均一なアモルファス膜を形成することができたが、室温で放置すると、数日内に結晶化し、白濁して、膜表面が凸凹状になった。
下記式(18)により表される電子輸送材料をITO膜付ガラス板上に真空蒸着したところ、52nmの厚さの均一で高純度のアモルファス膜を形成することができたが、室温で放置すると、数時間内に結晶化し、白濁して、膜表面が凸凹状になった。
市販の純度98%のシクロヘキシルベンゼンに、式(6)により表される化合物を1wt%溶解してインキを形成し、このインキを凸版印刷法にてITO膜付ガラス基板上に成膜し、ホットプレート上に載置して、100℃で膜を乾燥した。その結果、シクロヘキシルベンゼン中に混入していた溶剤の合成副生物の1,4−ジシクロヘキシルベンゼン等の難揮発性物質が膜中に10%以上混入して、純粋な式(6)により表される化合物からなる膜は得られなかった。
Claims (2)
- 少なくとも1回、常圧または減圧蒸留し、常圧かつ沸点以下での蒸発残渣が0.001wt%以下で、かつガスクロマトグラフィー測定による純度で99.9%以上の純度に精製した有機溶媒を単独で、または2種類以上混合した混合溶媒中に、少なくとも1種類以上の請求項1に記載のキャリア輸送材料または発光材料を固形分濃度が0.1wt%から50wt%の範囲になるように溶解したことを特徴とする、キャリア輸送層または発光層形成用インキ。
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