WO2012114745A1 - 置換されたトリフェニレン環構造を有する化合物および有機エレクトロルミネッセンス素子 - Google Patents
置換されたトリフェニレン環構造を有する化合物および有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2012114745A1 WO2012114745A1 PCT/JP2012/001217 JP2012001217W WO2012114745A1 WO 2012114745 A1 WO2012114745 A1 WO 2012114745A1 JP 2012001217 W JP2012001217 W JP 2012001217W WO 2012114745 A1 WO2012114745 A1 WO 2012114745A1
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 95
- 239000000463 material Substances 0.000 claims abstract description 63
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000012044 organic layer Substances 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 239000000470 constituent Substances 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 121
- 125000005580 triphenylene group Chemical group 0.000 claims description 41
- 125000000217 alkyl group Chemical group 0.000 claims description 23
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 21
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 20
- 125000001424 substituent group Chemical group 0.000 claims description 19
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 18
- 229910052801 chlorine Inorganic materials 0.000 claims description 18
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 18
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 18
- 229910052805 deuterium Inorganic materials 0.000 claims description 18
- 229910052731 fluorine Inorganic materials 0.000 claims description 18
- 125000001153 fluoro group Chemical group F* 0.000 claims description 18
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 17
- 125000004432 carbon atom Chemical group C* 0.000 claims description 17
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 238000005401 electroluminescence Methods 0.000 claims description 4
- 125000004431 deuterium atom Chemical group 0.000 claims 9
- 150000002894 organic compounds Chemical class 0.000 abstract description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 42
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 42
- 239000012043 crude product Substances 0.000 description 36
- 238000006243 chemical reaction Methods 0.000 description 32
- 239000000843 powder Substances 0.000 description 32
- -1 anode Substances 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 28
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 28
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 27
- 238000000034 method Methods 0.000 description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 24
- 238000005259 measurement Methods 0.000 description 22
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 230000000903 blocking effect Effects 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 18
- 239000000741 silica gel Substances 0.000 description 18
- 229910002027 silica gel Inorganic materials 0.000 description 18
- 238000001816 cooling Methods 0.000 description 17
- 238000003756 stirring Methods 0.000 description 17
- 238000001914 filtration Methods 0.000 description 16
- 239000010409 thin film Substances 0.000 description 16
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 15
- 238000005160 1H NMR spectroscopy Methods 0.000 description 15
- 238000004440 column chromatography Methods 0.000 description 15
- 230000005525 hole transport Effects 0.000 description 15
- 239000002244 precipitate Substances 0.000 description 15
- 239000003480 eluent Substances 0.000 description 14
- 229940126214 compound 3 Drugs 0.000 description 13
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 238000000926 separation method Methods 0.000 description 12
- 238000003786 synthesis reaction Methods 0.000 description 12
- 239000010408 film Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- 238000007740 vapor deposition Methods 0.000 description 11
- 238000002156 mixing Methods 0.000 description 10
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 150000001975 deuterium Chemical group 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 238000005481 NMR spectroscopy Methods 0.000 description 8
- SLGBZMMZGDRARJ-UHFFFAOYSA-N Triphenylene Natural products C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C2=C1 SLGBZMMZGDRARJ-UHFFFAOYSA-N 0.000 description 8
- 238000000151 deposition Methods 0.000 description 8
- 230000008021 deposition Effects 0.000 description 8
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 8
- 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 7
- 230000009477 glass transition Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 150000001721 carbon Chemical group 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 238000001953 recrystallisation Methods 0.000 description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 6
- QFLWZFQWSBQYPS-AWRAUJHKSA-N (3S)-3-[[(2S)-2-[[(2S)-2-[5-[(3aS,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-[1-bis(4-chlorophenoxy)phosphorylbutylamino]-4-oxobutanoic acid Chemical compound CCCC(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](NC(=O)CCCCC1SC[C@@H]2NC(=O)N[C@H]12)C(C)C)P(=O)(Oc1ccc(Cl)cc1)Oc1ccc(Cl)cc1 QFLWZFQWSBQYPS-AWRAUJHKSA-N 0.000 description 5
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 5
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 5
- SNRCKKQHDUIRIY-UHFFFAOYSA-L cyclopenta-1,4-dien-1-yl(diphenyl)phosphane;dichloromethane;dichloropalladium;iron(2+) Chemical compound [Fe+2].ClCCl.Cl[Pd]Cl.C1=C[CH-]C(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1.C1=C[CH-]C(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 SNRCKKQHDUIRIY-UHFFFAOYSA-L 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 239000002198 insoluble material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000002808 molecular sieve Substances 0.000 description 5
- 235000011056 potassium acetate Nutrition 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- NCRIDSGPLISUEU-UHFFFAOYSA-N 2-bromo-6-pyridin-2-ylpyridine Chemical compound BrC1=CC=CC(C=2N=CC=CC=2)=N1 NCRIDSGPLISUEU-UHFFFAOYSA-N 0.000 description 4
- ZVFQEOPUXVPSLB-UHFFFAOYSA-N 3-(4-tert-butylphenyl)-4-phenyl-5-(4-phenylphenyl)-1,2,4-triazole Chemical compound C1=CC(C(C)(C)C)=CC=C1C(N1C=2C=CC=CC=2)=NN=C1C1=CC=C(C=2C=CC=CC=2)C=C1 ZVFQEOPUXVPSLB-UHFFFAOYSA-N 0.000 description 4
- WYFCZWSWFGJODV-MIANJLSGSA-N 4-[[(1s)-2-[(e)-3-[3-chloro-2-fluoro-6-(tetrazol-1-yl)phenyl]prop-2-enoyl]-5-(4-methyl-2-oxopiperazin-1-yl)-3,4-dihydro-1h-isoquinoline-1-carbonyl]amino]benzoic acid Chemical compound O=C1CN(C)CCN1C1=CC=CC2=C1CCN(C(=O)\C=C\C=1C(=CC=C(Cl)C=1F)N1N=NN=C1)[C@@H]2C(=O)NC1=CC=C(C(O)=O)C=C1 WYFCZWSWFGJODV-MIANJLSGSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229940125904 compound 1 Drugs 0.000 description 4
- 229940125782 compound 2 Drugs 0.000 description 4
- 125000004076 pyridyl group Chemical group 0.000 description 4
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- GHYOCDFICYLMRF-UTIIJYGPSA-N (2S,3R)-N-[(2S)-3-(cyclopenten-1-yl)-1-[(2R)-2-methyloxiran-2-yl]-1-oxopropan-2-yl]-3-hydroxy-3-(4-methoxyphenyl)-2-[[(2S)-2-[(2-morpholin-4-ylacetyl)amino]propanoyl]amino]propanamide Chemical compound C1(=CCCC1)C[C@@H](C(=O)[C@@]1(OC1)C)NC([C@H]([C@@H](C1=CC=C(C=C1)OC)O)NC([C@H](C)NC(CN1CCOCC1)=O)=O)=O GHYOCDFICYLMRF-UTIIJYGPSA-N 0.000 description 3
- 0 *C*(CCC1)C1(C1)C11*C1 Chemical compound *C*(CCC1)C1(C1)C11*C1 0.000 description 3
- GZOLRAQBGRLGHQ-UHFFFAOYSA-N 1,2-bis(3-bromophenyl)benzene Chemical group BrC1=CC=CC(C=2C(=CC=CC=2)C=2C=C(Br)C=CC=2)=C1 GZOLRAQBGRLGHQ-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 150000001716 carbazoles Chemical class 0.000 description 3
- 229940125797 compound 12 Drugs 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
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- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 3
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- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 3
- 125000005956 isoquinolyl group Chemical group 0.000 description 3
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 3
- 125000001624 naphthyl group Chemical group 0.000 description 3
- 125000005561 phenanthryl group Chemical group 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 125000003226 pyrazolyl group Chemical group 0.000 description 3
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- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
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- ZHXUWDPHUQHFOV-UHFFFAOYSA-N 2,5-dibromopyridine Chemical compound BrC1=CC=C(Br)N=C1 ZHXUWDPHUQHFOV-UHFFFAOYSA-N 0.000 description 2
- BPGPBYGXGRDFQG-UHFFFAOYSA-N 2,7-dibromotriphenylene Chemical group C1=CC=C2C3=CC(Br)=CC=C3C3=CC=C(Br)C=C3C2=C1 BPGPBYGXGRDFQG-UHFFFAOYSA-N 0.000 description 2
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound 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
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- IPFDSCVIIKPNHE-UHFFFAOYSA-N 2-pyridin-2-yl-6-[11-(6-pyridin-2-ylpyridin-2-yl)triphenylen-2-yl]pyridine Chemical group N1=CC=CC=C1C1=CC=CC(C=2C=C3C4=CC(=CC=C4C4=CC=CC=C4C3=CC=2)C=2N=C(C=CC=2)C=2N=CC=CC=2)=N1 IPFDSCVIIKPNHE-UHFFFAOYSA-N 0.000 description 2
- UZYOWEBSRYQJJO-UHFFFAOYSA-N 2-pyridin-2-yl-6-[7-(6-pyridin-2-ylpyridin-2-yl)triphenylen-2-yl]pyridine Chemical group N1=CC=CC=C1C1=CC=CC(C=2C=C3C4=CC=CC=C4C4=CC(=CC=C4C3=CC=2)C=2N=C(C=CC=2)C=2N=CC=CC=2)=N1 UZYOWEBSRYQJJO-UHFFFAOYSA-N 0.000 description 2
- VEKIYFGCEAJDDT-UHFFFAOYSA-N 2-pyridin-3-ylpyridine Chemical group N1=CC=CC=C1C1=CC=CN=C1 VEKIYFGCEAJDDT-UHFFFAOYSA-N 0.000 description 2
- ZDCWLNFPCAAJKO-UHFFFAOYSA-N 2-pyridin-4-yl-5-[7-(6-pyridin-4-ylpyridin-3-yl)triphenylen-2-yl]pyridine Chemical group C=1C=CC=C(C2=C3)C=1C1=CC(C=4C=NC(=CC=4)C=4C=CN=CC=4)=CC=C1C2=CC=C3C(C=N1)=CC=C1C1=CC=NC=C1 ZDCWLNFPCAAJKO-UHFFFAOYSA-N 0.000 description 2
- RMHQDKYZXJVCME-UHFFFAOYSA-N 2-pyridin-4-ylpyridine Chemical group N1=CC=CC=C1C1=CC=NC=C1 RMHQDKYZXJVCME-UHFFFAOYSA-N 0.000 description 2
- OBAJPWYDYFEBTF-UHFFFAOYSA-N 2-tert-butyl-9,10-dinaphthalen-2-ylanthracene Chemical compound C1=CC=CC2=CC(C3=C4C=CC=CC4=C(C=4C=C5C=CC=CC5=CC=4)C4=CC=C(C=C43)C(C)(C)C)=CC=C21 OBAJPWYDYFEBTF-UHFFFAOYSA-N 0.000 description 2
- JMYWOTUPHRLJMO-UHFFFAOYSA-N 4,4,5,5-tetramethyl-2-[11-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)triphenylen-2-yl]-1,3,2-dioxaborolane Chemical group O1C(C)(C)C(C)(C)OB1C1=CC=C(C=2C(=CC=CC=2)C=2C3=CC(=CC=2)B2OC(C)(C)C(C)(C)O2)C3=C1 JMYWOTUPHRLJMO-UHFFFAOYSA-N 0.000 description 2
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- AWJPULCSDFBFDR-UHFFFAOYSA-N 5-bromo-2-pyridin-2-ylpyridine Chemical compound N1=CC(Br)=CC=C1C1=CC=CC=N1 AWJPULCSDFBFDR-UHFFFAOYSA-N 0.000 description 2
- SPRDWKWZBQDQNI-UHFFFAOYSA-N 5-bromo-2-pyridin-4-ylpyridine Chemical compound N1=CC(Br)=CC=C1C1=CC=NC=C1 SPRDWKWZBQDQNI-UHFFFAOYSA-N 0.000 description 2
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 2
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- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000006069 Suzuki reaction reaction Methods 0.000 description 2
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 2
- BAHGLTLEMLDWAA-UHFFFAOYSA-N [11-(trifluoromethylsulfonyloxy)triphenylen-2-yl] trifluoromethanesulfonate Chemical compound C1=C(OS(=O)(=O)C(F)(F)F)C=C2C3=CC(OS(=O)(=O)C(F)(F)F)=CC=C3C3=CC=CC=C3C2=C1 BAHGLTLEMLDWAA-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 2
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- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 description 2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 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
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- UMOJXGMTIHBUTN-UHFFFAOYSA-N molybdenum(5+) Chemical compound [Mo+5] UMOJXGMTIHBUTN-UHFFFAOYSA-N 0.000 description 1
- 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
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004593 naphthyridinyl group Chemical group N1=C(C=CC2=CC=CN=C12)* 0.000 description 1
- IOMMMLWIABWRKL-WUTDNEBXSA-N nazartinib Chemical compound C1N(C(=O)/C=C/CN(C)C)CCCC[C@H]1N1C2=C(Cl)C=CC=C2N=C1NC(=O)C1=CC=NC(C)=C1 IOMMMLWIABWRKL-WUTDNEBXSA-N 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- PIDFDZJZLOTZTM-KHVQSSSXSA-N ombitasvir Chemical compound COC(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@H]1C(=O)NC1=CC=C([C@H]2N([C@@H](CC2)C=2C=CC(NC(=O)[C@H]3N(CCC3)C(=O)[C@@H](NC(=O)OC)C(C)C)=CC=2)C=2C=CC(=CC=2)C(C)(C)C)C=C1 PIDFDZJZLOTZTM-KHVQSSSXSA-N 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- AICOOMRHRUFYCM-ZRRPKQBOSA-N oxazine, 1 Chemical compound C([C@@H]1[C@H](C(C[C@]2(C)[C@@H]([C@H](C)N(C)C)[C@H](O)C[C@]21C)=O)CC1=CC2)C[C@H]1[C@@]1(C)[C@H]2N=C(C(C)C)OC1 AICOOMRHRUFYCM-ZRRPKQBOSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 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
- XEXYATIPBLUGSF-UHFFFAOYSA-N phenanthro[9,10-b]pyridine-2,3,4,5,6,7-hexacarbonitrile Chemical group N1=C(C#N)C(C#N)=C(C#N)C2=C(C(C#N)=C(C(C#N)=C3)C#N)C3=C(C=CC=C3)C3=C21 XEXYATIPBLUGSF-UHFFFAOYSA-N 0.000 description 1
- 125000004625 phenanthrolinyl group Chemical group N1=C(C=CC2=CC=C3C=CC=NC3=C12)* 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- QLULGIRFKAWHOJ-UHFFFAOYSA-N pyridin-4-ylboronic acid Chemical compound OB(O)C1=CC=NC=C1 QLULGIRFKAWHOJ-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- LISFMEBWQUVKPJ-UHFFFAOYSA-N quinolin-2-ol Chemical compound C1=CC=C2NC(=O)C=CC2=C1 LISFMEBWQUVKPJ-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000003967 siloles Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 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
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
- C07D213/22—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing two or more pyridine rings directly linked together, e.g. bipyridyl
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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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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
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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]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
- H10K50/165—Electron transporting layers comprising dopants
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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]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
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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
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/622—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing four rings, e.g. pyrene
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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- C07D273/00—Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
- C07D498/18—Bridged systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/14—Macromolecular compounds
- C09K2211/1408—Carbocyclic compounds
- C09K2211/1425—Non-condensed systems
Definitions
- the present invention relates to a compound suitable for an organic electroluminescence element (hereinafter abbreviated as an organic EL element) which is a self-luminous element suitable for various display devices and the element, and more specifically, a substituted bipyridyl group. And a compound having a triphenylene ring structure, and an organic EL device using the compound.
- an organic electroluminescence element hereinafter abbreviated as an organic EL element
- organic EL elements are self-luminous elements, they have been actively researched because they are brighter and more visible than liquid crystal elements and are capable of clear display.
- Non-Patent Document 1 To date, many improvements have been made for practical application of organic EL devices, and various roles have been further subdivided, and sequentially on the substrate, anode, hole injection layer, hole transport layer, light emitting layer, electron transport High efficiency and durability are achieved by an electroluminescent element provided with a layer, an electron injection layer, and a cathode (see, for example, Non-Patent Document 1).
- Non-Patent Document 2 the use of triplet excitons has been attempted for the purpose of further improving the luminous efficiency, and the use of phosphorescent emitters has been studied (for example, see Non-Patent Document 2).
- the light emitting layer can also be prepared by doping a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- the light injected from both electrodes is recombined in the light emitting layer to obtain light emission.
- the hole moving speed is faster than the electron moving speed, some of the holes pass through the light emitting layer. There is a problem of efficiency reduction due to passing through. Therefore, an electron transport material having a high electron moving speed is demanded.
- Tris (8-hydroxyquinoline) aluminum (hereinafter abbreviated as Alq 3 ), which is a typical luminescent material, is generally used as an electron transport material, but has a slow electron mobility and a work function of 5. Since it is 6 eV, it cannot be said that the hole blocking performance is sufficient.
- a method for preventing a part of holes from passing through the light emitting layer and improving the probability of charge recombination in the light emitting layer is to insert a hole blocking layer.
- a hole blocking material triazole derivatives (for example, refer to Patent Document 3), bathocuproine (hereinafter abbreviated as BCP), mixed ligand complexes of aluminum [aluminum (III) bis (2-methyl-8) -Quinolinato) -4-phenylphenolate (hereinafter abbreviated as BAlq)] (for example, see Non-Patent Document 2).
- TAZ 3- (4-biphenylyl) -4-phenyl-5- (4-t-butylphenyl) -1,2,4-triazole
- TAZ has a large work function of 6.6 eV and high hole blocking ability
- an electron transporting hole blocking layer laminated on the cathode side of a fluorescent light emitting layer or phosphorescent light emitting layer produced by vacuum deposition or coating contributes to high efficiency of the organic EL element (see, for example, Non-Patent Document 3).
- BCP also has a high work function of 6.7 eV and a high hole blocking ability, but its glass transition point (Tg) is as low as 83 ° C., so that the stability of the thin film is poor and it functions sufficiently as a hole blocking layer. I can't say that. Therefore, it has been proposed to use BAlq as a hole blocking layer as a measure for extending the lifetime of phosphorescent light emitting devices. In this device, although the life extension is improved, since the work function of BAlq is as small as 5.8 eV, the holes are not efficiently confined in the light emitting layer, and the efficiency is reduced as compared with the device using BCP. Seen, not enough.
- JP-A-8-048656 Japanese Patent No. 3194657 Japanese Patent No. 2734341 WO2003 / 060956
- An object of the present invention is to provide an organic compound having characteristics excellent in electron injection / transport performance as a material for a low power consumption organic EL element, and further using this compound, a low power consumption organic EL element Is to provide.
- the physical properties that the organic compound to be provided by the present invention should have include (1) good electron injection properties, (2) fast electron transfer speed, and (3) high molecular orientation. And (4) excellent heat resistance.
- the physical characteristics that the organic EL element to be provided by the present invention should have include (1) high power efficiency, (2) low light emission starting voltage, and (3) low practical driving voltage. I can give you something.
- the present inventors have high flatness, that is, good intermolecular packing in a thin film state can be expected, and good electron transportability is expected due to the abundance of ⁇ electrons.
- the present invention is a compound having a substituted bipyridyl group represented by the general formula (1) or (2) and a triphenylene ring structure.
- R 1 to R 18 may be the same or different and each represents a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, or an optionally substituted carbon atom
- 1 to 6 linear or branched alkyl groups substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups or substituted or unsubstituted condensed polycyclic aromatic groups
- n1 and n2 may be the same or different and each represents 2 or 3.
- a plurality of R 3 to R 8 may be the same or different from each other.
- R 19 to R 39 may be the same or different and each represents a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, or a carbon atom which may have a substituent) 1 to 6 linear or branched alkyl groups, substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups or substituted or unsubstituted condensed polycyclic aromatic groups, n3, n4 and n5 may be the same or different and each represents 2 or 3.
- a plurality of R 22 to R 30 may be the same or different from each other.
- the present invention is also a compound having a substituted bipyridyl group and a triphenylene ring structure represented by the following general formula (1 ').
- R 1 to R 18 may be the same or different and each represents a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, or an optionally substituted carbon atom
- 1 to 6 linear or branched alkyl groups substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups or substituted or unsubstituted condensed polycyclic aromatic groups
- n1 and n2 may be the same or different and each represents 2 or 3.
- a plurality of R 3 to R 8 may be the same or different from each other.
- the present invention is a compound having a substituted bipyridyl group represented by the following general formula (1 ′′) and a triphenylene ring structure.
- R 1 to R 18 may be the same or different and each represents a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, or an optionally substituted carbon atom
- 1 to 6 linear or branched alkyl groups substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups or substituted or unsubstituted condensed polycyclic aromatic groups
- n1 and n2 may be the same or different and each represents 2 or 3.
- a plurality of R 3 to R 8 may be the same or different from each other.
- the present invention is a compound having a substituted bipyridyl group represented by the following general formula (1 ′ ′′) and a triphenylene ring structure.
- R 3 to R 18 and R 40 to R 47 may be the same or different and have a hydrogen atom, deuterium atom, fluorine atom, chlorine atom, cyano group, trifluoromethyl group, or substituent.
- the present invention is a compound having a substituted bipyridyl group and a triphenylene ring structure represented by the following general formula (1 '' '' ').
- R 3 to R 18 and R 40 to R 47 may be the same or different and have a hydrogen atom, deuterium atom, fluorine atom, chlorine atom, cyano group, trifluoromethyl group, or substituent.
- the present invention is a compound having a substituted bipyridyl group and a triphenylene ring structure represented by the following general formula (2 ').
- R 19 to R 39 may be the same or different and each represents a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, or a carbon atom which may have a substituent) 1 to 6 linear or branched alkyl groups, substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups or substituted or unsubstituted condensed polycyclic aromatic groups, n3, n4 and n5 may be the same or different and each represents 2 or 3.
- a plurality of R 22 to R 30 may be the same or different from each other.
- the present invention provides an organic EL device having a pair of electrodes and at least one organic layer sandwiched therebetween, wherein at least one of the organic layers is represented by the general formula (1) to the general formula (1 ′′ ′′),
- An organic EL device comprising a compound having a substituted bipyridyl group represented by the general formula (2) or the general formula (2 ′) and a triphenylene ring structure.
- the “alkyl group” in the “straight or branched alkyl group having 1 to 6 atoms” specifically, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, Examples thereof include a tert-butyl group, an n-pentyl group, an isopentyl group, a neopentyl group, and an n-hexyl group.
- the number of carbon atoms having a substituent is 1 to 6 represented by R 1 to R 47 in the general formula (1) to the general formula (1 ′′ ′′), the general formula (2), or the general formula (2 ′).
- substituents in the “straight-chain or branched alkyl group” include a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, a straight-chain group having 1 to 6 carbon atoms or Branched alkyl group, cyclopentyl group, cyclohexyl group, dialkylamino group substituted with linear or branched alkyl group having 1 to 6 carbon atoms, phenyl group, biphenylyl group, terphenylyl group, tetrakisphenyl group, styryl Group, naphthyl group, fluorenyl group, phenanthryl group, indenyl group, pyrenyl group,
- ⁇ aromatic group '' specifically phenyl group, biphenylyl group, terphenylyl group, tetrakisphenyl group, styryl group, naphthyl group, anthryl group, acenaphthenyl group, fluorenyl group, phenanthryl group, indenyl group, pyrenyl group, pyridyl group, Bipyridyl, triazyl, pyrimidyl, furanyl,
- the “substituted or unsubstituted aromatic heterocyclic group” represented by R 1 to R 8 , R 19 to R 27 , R 40 to R 47 is preferably a substituted or unsubstituted pyridyl group, Improvement of injection characteristics can be expected.
- the “substituent” in the “substituted aromatic heterocyclic group” or “substituted condensed polycyclic aromatic group” specifically, a deuterium atom, fluorine atom, chlorine atom, cyano group, trifluoromethyl group, nitro group, Straight chain or branched alkyl group having 1 to 6 carbon atoms, cyclopentyl group, cyclohexyl group, straight chain or branched alkoxy group having 1 to 6 carbon atoms, straight chain having 1 to 6 carbon atoms Or a dialkylamino group substituted with a branched alkyl group, phenyl group, biphenylyl group, terphenylyl group, tetrakisphenyl group, styryl group, naphthyl group, fluoren
- the compound having a substituted bipyridyl group and a triphenylene ring structure represented by the general formula (1) to the general formula (1 ′′ ′′), the general formula (2), or the general formula (2 ′) of the present invention is novel.
- This compound has a function of moving electrons faster than conventional electron transport materials, maintaining a stable thin film state, improving luminous efficiency, and lowering driving voltage.
- the bipyridyl group bonded to the triphenylene ring (when n1 to n5 are 2 in the general formula (1) or (2)) is a 2,2′-bipyridyl group or a 2,3′-bipyridyl group.
- Group, 2,4′-bipyridyl group and 3,2′-bipyridyl group are preferable, and 2,2′-bipyridyl group and 2,4′-bipyridyl group are particularly preferable.
- the compound having a substituted bipyridyl group and a triphenylene ring structure represented by the general formula (1) to the general formula (1 ′′ ′′), the general formula (2), or the general formula (2 ′) of the present invention is: It can be used as a constituent material of an electron injection layer and / or an electron transport layer of an organic EL element.
- a material having a higher electron injection / movement speed than conventional materials the electron transport efficiency from the electron transport layer to the light emitting layer is improved, the light emission efficiency is improved, and the driving voltage is lowered, It has the effect
- the compound having a substituted bipyridyl group and a triphenylene ring structure represented by the general formula (1) to the general formula (1 ′′ ′′), the general formula (2), or the general formula (2 ′) of the present invention is: It can also be used as a constituent material of a light emitting layer of an organic EL element.
- the material of the present invention which has excellent electron transport properties and a wide band gap, is used as a host material for a light emitting layer, and a phosphor or phosphorescent light emitter called a dopant is supported to form a light emitting layer. By using it, the drive voltage is lowered, and an organic EL element with improved luminous efficiency can be realized.
- the organic EL device of the present invention uses a compound having a substituted bipyridyl group and a triphenylene ring structure, which has a faster electron movement than a conventional electron transport material and a stable thin film state, and thus has high efficiency and high durability. It became possible to realize.
- the compound having a substituted bipyridyl group and a triphenylene ring structure of the present invention has a fast electron movement and a stable thin film state, it can be used as a constituent material for an electron injection layer, an electron transport layer, or a light emitting layer of an organic EL device.
- An organic EL device manufactured using a compound having a substituted bipyridyl group and a triphenylene ring structure can improve the light emission efficiency and reduce the driving voltage, thereby improving the durability.
- FIG. 1 is a 1 H-NMR chart of the compound of Example 1 of the present invention (Compound 3).
- 2 is a 1 H-NMR chart of the compound of Example 2 of the present invention (Compound 4).
- FIG. FIG. 3 is a 1 H-NMR chart of the compound of Example 3 of the present invention (Compound 11).
- FIG. 3 is a 1 H-NMR chart of the compound of Example 4 of the present invention (Compound 12).
- FIG. 6 is a diagram showing EL element configurations of Examples 8 to 11 and Comparative Examples 1 to 5.
- the compound having a substituted bipyridyl group and a triphenylene ring structure of the present invention is a novel compound, and these compounds can be synthesized, for example, as follows.
- the corresponding boronate ester form is synthesized by subjecting the corresponding triphenylene compound dihalide to boronic esterification with bis (pinacolato) diboron or the like (see, for example, Non-Patent Document 5), and further, the corresponding boron.
- a compound having a substituted bipyridyl group and a triphenylene ring structure is obtained by performing a cross-coupling reaction such as Suzuki coupling between an acid ester and a halogenobipyridine having various substituents (see, for example, Non-Patent Document 6). Can be synthesized.
- boronic acid ester of bipyridine having various substituents is synthesized by subjecting halogenobipyridine having various substituents to boronic acid esterification with bis (pinacolato) diboron or the like.
- a compound having a substituted bipyridyl group and a triphenylene ring structure can be synthesized by carrying out a cross-coupling reaction such as Suzuki coupling between a boronic acid ester of bipyridine having a dipyridine and a dihalide of a corresponding triphenylene compound.
- melting point is an index of vapor deposition
- glass transition point (Tg) is an index of stability in a thin film state
- work function is an index of hole blocking ability
- Tg Melting point and glass transition point (Tg) were measured with a high sensitivity differential scanning calorimeter (Bruker AXS, DSC3100S) using powder.
- the work function was measured using a photoelectron spectrometer (AC-3, manufactured by Riken Keiki Co., Ltd.) in the atmosphere after forming a 100 nm thin film on the ITO substrate.
- an anode, a hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layer, and a cathode are sequentially formed on the substrate, and the anode and the hole transport layer Examples include those having a hole injection layer between them, those having an electron injection layer between the electron transport layer and the cathode, and those having an electron blocking layer between the light emitting layer and the hole transport layer.
- several organic layers can be omitted.
- a structure having an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode sequentially on a substrate can be used. .
- the light emitting layer, the hole transport layer, and the electron transport layer may have a structure in which two or more layers are laminated.
- an electrode material having a large work function such as ITO or gold is used.
- a hole injection layer of the organic EL device of the present invention in addition to a porphyrin compound typified by copper phthalocyanine, a starburst type triphenylamine derivative, three or more triphenylamine structures in the molecule, single bond or heteroatom
- triphenylamine trimers and tetramers such as arylamine compounds having a structure linked by a divalent group not containing an acceptor, acceptor heterocyclic compounds such as hexacyanoazatriphenylene, and coating-type polymer materials Can do.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- N, N′-diphenyl-N, N′-di (m-tolyl) -benzidine (hereinafter abbreviated as TPD) or N, N′-diphenyl-N , N′-di ( ⁇ -naphthyl) -benzidine (hereinafter abbreviated as NPD)
- TPD N, N′-diphenyl-N , N′-di ( ⁇ -naphthyl) -benzidine
- NPD benzidine derivatives such as N, N, N ′, N′-tetrabiphenylylbenzidine, 1,1-bis [(di-4 -Tolylamino) phenyl] cyclohexane
- TAPC 1,1-bis [(di-4 -Tolylamino) phenyl] cyclohexane
- PEDOT poly (3,4-ethylenedioxythiophene)
- PSS poly (styrene sulfonate)
- a material that is usually used for the layer is further P-doped with trisbromophenylamine hexachloroantimony or the like, or a TPD structure having a partial structure. Molecular compounds and the like can be used.
- TCTA 4,4 ′, 4 ′′ -tri (N-carbazolyl) triphenylamine
- TCTA 9,9-bis [4- (carbazole- 9-yl) phenyl] fluorene
- mCP 1,3-bis (carbazol-9-yl) benzene
- Ad 2,2-bis (4-carbazol-9-ylphenyl) adamantane
- Carbazole derivatives such as 9- [4- (carbazol-9-yl) phenyl] -9- [4- (triphenylsilyl) phenyl] -9H-fluorene
- a compound having an electron blocking action such as a compound having a triarylamine structure can be used.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- various metal complexes and anthracene derivatives in addition to metal complexes of quinolinol derivatives including Alq 3 Bisstyrylbenzene derivatives, pyrene derivatives, oxazole derivatives, polyparaphenylene vinylene derivatives, and the like can be used.
- the light emitting layer may be composed of a host material and a dopant material, and in addition to the light emitting material, a thiazole derivative, a benzimidazole derivative, a polydialkylfluorene derivative, or the like can be used as the host material.
- a dopant material quinacridone, coumarin, rubrene, perylene, and derivatives thereof, benzopyran derivatives, rhodamine derivatives, aminostyryl derivatives, and the like can be used. These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- a phosphorescent light emitting material can be used as the light emitting material.
- a phosphorescent emitter of a metal complex such as iridium or platinum can be used.
- Green phosphorescent emitters such as Ir (ppy) 3
- blue phosphorescent emitters such as FIrpic and FIr6, red phosphorescent emitters such as Btp 2 Ir (acac), and the like are used as host materials.
- As the hole injecting / transporting host material carbazole derivatives such as 4,4′-di (N-carbazolyl) biphenyl (hereinafter abbreviated as CBP), TCTA, mCP, and the like can be used.
- UGH2 p-bis (triphenylsilyl) benzene
- TPBI 2,2 ′, 2 ′′-(1,3,5-phenylene) -tris (1-phenyl) -1H-benzimidazole
- the phosphorescent light-emitting material into the host material by co-evaporation in the range of 1 to 30 weight percent with respect to the entire light-emitting layer.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- phenanthroline derivatives such as bathocuproin (hereinafter abbreviated as BCP), and quinolinol such as BAlq
- BCP bathocuproin
- quinolinol such as BAlq
- various rare earth complexes, oxazole derivatives, triazole derivatives, triazine derivatives, and other compounds having a hole blocking action can be used. These materials may also serve as the material for the electron transport layer.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- the electron transport layer of the organic EL device of the present invention in addition to the substituted bipyridyl group and the compound having a triphenylene ring structure of the present invention, in addition to metal complexes of quinolinol derivatives including Alq 3 and BAlq, various metal complexes, Triazole derivatives, triazine derivatives, oxadiazole derivatives, thiadiazole derivatives, carbodiimide derivatives, quinoxaline derivatives, phenanthroline derivatives, silole derivatives, and the like can be used.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- an alkali metal salt such as lithium fluoride and cesium fluoride
- an alkaline earth such as magnesium fluoride
- metal oxides such as metal salts and aluminum oxide can be used, this can be omitted in the preferred selection of the electron transport layer and the cathode.
- a material usually used for the layer and further doped with a metal such as cesium can be used.
- an electrode material having a low work function such as aluminum or an alloy having a lower work function such as a magnesium silver alloy, a magnesium indium alloy, or an aluminum magnesium alloy is used as the electrode material.
- the crude product was purified by column chromatography (carrier: silica gel, eluent: n-hexane) and white powder of 3,3 ′′ -bis (trimethylsilyl) -1,1 ′: 2 ′, 1 ′′ -terphenyl 23.3 g (84% yield) was obtained.
- Chloroform 200 ml, n-hexane 600 ml, and silica gel 36.6 g were added to the crude product, followed by adsorption purification, followed by washing with chloroform to obtain 5.5 g of light yellow powder of 2,7-dibromotriphenylene (yield 46%).
- the reaction solution was added to a 10% disodium dihydrogen tetraacetate aqueous solution and stirred for 6 hours, and then 300 ml of chloroform was added and the organic layer was collected by performing a liquid separation operation.
- the organic layer was dehydrated with anhydrous magnesium sulfate and concentrated to obtain a crude product.
- the crude product was purified by column chromatography (carrier: silica gel, eluent: toluene) to obtain 11.1 g (yield 63%) of 6-bromo-2,2′-bipyridine as a white powder.
- the crude product was purified by column chromatography (carrier: silica gel, eluent: n-hexane), and white powder of 4,4 ′′ -bis (trimethylsilyl) -1,1 ′: 2 ′, 1 ′′ -terphenyl 21.1 g (yield 93%) was obtained.
- the crude product was purified by recrystallization using ethanol and then washed with methanol to obtain a white powder of 4,4 ′′ -dibromo-1,1 ′: 2 ′, 1 ′′ -terphenyl. 9 g (68% yield) was obtained.
- the glass transition point of the compound of the present invention was not observed. This indicates that the thin film state is stable in the compound of the present invention.
- the compound of the present invention has a value deeper than the work function 5.4 eV of a general hole transport material such as NPD or TPD, and has a large hole blocking ability.
- the organic EL element has a hole transport layer 3, a light emitting layer 4, an electron transport layer 5, and an electron injection layer 6 on a glass substrate 1 on which an ITO electrode is previously formed as a transparent anode 2.
- the cathode (silver electrode) 7 was deposited in this order.
- the glass substrate 1 on which ITO having a thickness of 100 nm was formed was washed with an organic solvent, and then the surface was washed by UV ozone treatment. Then, this glass substrate with an ITO electrode was mounted in a vacuum vapor deposition machine and the pressure was reduced to 0.001 Pa or less. Subsequently, NPD was formed as a hole transport layer 3 so as to cover the transparent anode 2 so as to have a film thickness of 50 nm at a deposition rate of 2 ⁇ / s. On this hole transport layer 3, Alq 3 was formed as a light emitting layer 4 so as to have a film thickness of 20 nm at a deposition rate of 2 ⁇ / s.
- the compound of Example 1 of the present invention (Compound 3) was formed as an electron transport layer 5 so as to have a film thickness of 30 nm at a deposition rate of 2 ⁇ / s.
- a magnesium silver alloy was formed as the electron injection layer 6 so as to have a film thickness of 100 nm at a deposition rate of 3.3 ⁇ / s.
- silver was deposited to a thickness of 10 nm to form the cathode 7.
- the characteristic measurement was performed at normal temperature in air
- Example An organic EL device was produced under the same conditions as in Example 8 by replacing the material of the electron transport layer 5 in Example 8 with the compound of Example 3 of the present invention (Compound 11). About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example An organic EL device was produced under the same conditions as in Example 8 by replacing the material of the electron transport layer 5 in Example 8 with the compound of Example 5 of the present invention (Compound 55). About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 1 For comparison, instead of the material of the electron transport layer 5 in Example 8 to Alq 3, to produce an organic EL element under the same conditions as in Example 8. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 2 For comparison, an organic EL device was produced under the same conditions as in Example 8 by replacing the material of the electron transport layer 5 in Example 8 with the comparative compound 1. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 3 For comparison, an organic EL device was produced under the same conditions as in Example 8 by replacing the material of the electron transport layer 5 in Example 8 with the comparative compound 2. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 4 For comparison, an organic EL device was produced under the same conditions as in Example 8 by replacing the material of the electron transport layer 5 in Example 8 with the comparative compound 3. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- the driving voltage at a current density of 10 mA / cm 2 was 5.70 V of Comparative Example 1 using Alq 3, and 6.2 of Comparative Examples 2 to 4 using Comparative Compound 1 to Comparative Compound 3. Compared to 60 V to 7.50 V, the voltage was greatly reduced to 4.10 V in Example 8, 4.40 V in Example 9, and 4.60 V in Example 10. Furthermore, all of the luminance, light emission efficiency, and power efficiency at a current density of 10 mA / cm 2 were greatly improved.
- the glass substrate 1 on which the ITO film having a thickness of 100 nm was formed was washed with an organic solvent, the surface was washed by UV ozone treatment. Then, this glass substrate with an ITO electrode was mounted in a vacuum vapor deposition machine and the pressure was reduced to 0.001 Pa or less. Subsequently, NPD was formed as a hole transport layer 3 so as to cover the transparent anode 2 so as to have a film thickness of 60 nm at a deposition rate of 2 ⁇ / s.
- a magnesium silver alloy was formed as the electron injection layer 6 so as to have a film thickness of 100 nm at a deposition rate of 3.3 ⁇ / s. Finally, silver was deposited to a thickness of 10 nm to form the cathode 7. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Table 2 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the organic EL device produced using the compound of Example 1 (Compound 3) of the present invention.
- Example 5 For comparison, instead of the material of the electron transport layer 5 in Example 11 to Alq 3, to produce an organic EL element under the same conditions as in Example 11. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- the driving voltage at a current density of 10 mA / cm 2 was greatly reduced to 4.80 V in Example 11 compared to 8.80 V in Comparative Example 5 using Alq 3 . Furthermore, all of the power efficiency at a current density of 10 mA / cm 2 was greatly improved.
- the organic EL device using a compound having a bipyridyl group and a triphenylene ring structure of the present invention typical electron transport is used as a material Alq 3, and the central skeleton nonplanar structure It was found that a large improvement in power efficiency and a significant reduction in practical driving voltage can be achieved as compared with the devices using Comparative Compounds 1 to 3 as described above.
- the speed of electron transfer of the compound having bipyridyl group and triphenylene ring structure of the present invention is generally It is expected to be faster at each stage than Alq 3 which is a typical electron transport material.
- the compound having a bipyridyl group and a triphenylene ring structure of the present invention is excellent as a compound for an organic EL device because it has good electron injection / transport performance and a stable thin film state.
- an organic EL element using the compound, high efficiency can be obtained, practical driving voltage can be lowered, and durability can be improved. For example, it has become possible to develop home appliances and lighting.
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Abstract
Description
ここで、R1~R8、R19~R27、R40~R47で表される、「置換もしくは無置換の芳香族複素環基」として、置換もしくは無置換のピリジル基が好ましく、電子注入特性の向上が期待できる。
ここで、トリフェニレン環に結合するビピリジル基(一般式(1)もしくは一般式(2)において、n1~n5が2である場合)としては、2,2’-ビピリジル基、2,3’-ビピリジル基、2,4’-ビピリジル基、3,2’-ビピリジル基が好ましく、2,2’-ビピリジル基、2,4’-ビピリジル基が特に好ましい。
一方、種々の置換基を有するハロゲノビピリジンをビス(ピナコラート)ジボロンなどによるボロン酸エステル化を行うことによって、種々の置換基を有するビピリジンのボロン酸エステル体を合成し、さらに、この種々の置換基を有するビピリジンのボロン酸エステル体と相当するトリフェニレン化合物のジハライドとをSuzukiカップリングなどのクロスカップリング反応を行うことによって、置換されたビピリジル基とトリフェニレン環構造を有する化合物を合成することができる。
窒素置換した反応容器に、2,5-ジブロモピリジン19.5g、2-ピリジルジンクブロマイド150ml、テトラヒドロフラン90ml、テトラキス(トリフェニルホスフィン)パラジウム(0)4.33gを加えて冷却し、0℃で2時間攪拌した後、さらに室温で3時間攪拌した。反応溶液を10%エチレンジアミン四酢酸二水素二ナトリウム水溶液に加えて6時間攪拌した後、クロロホルム300mlを加え、分液操作を行うことによって有機層を採取した。有機層を無水硫酸マグネシウムで脱水した後、濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(担体:シリカゲル、溶離液:トルエン)によって精製し、5-ブロモ-2,2’-ビピリジンの白色粉末11.1g(収率63%)を得た。
窒素置換した反応容器に、2,6-ジブロモピリジン19.5g、2-ピリジルジンクブロマイド150ml、テトラヒドロフラン90ml、テトラキス(トリフェニルホスフィン)パラジウム(0)4.33gを加えて冷却し、0℃で2時間攪拌した後、さらに室温で3時間攪拌した。反応溶液を10%エチレンジアミン四酢酸二水素二ナトリウム水溶液に加えて6時間撹拌した後、クロロホルム300mlを加え、分液操作を行うことによって有機層を採取した。有機層を無水硫酸マグネシウムで脱水した後、濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(担体:シリカゲル、溶離液:トルエン)によって精製し、6-ブロモ-2,2’-ビピリジンの白色粉末11.1g(収率63%)を得た。
窒素置換した反応容器に、1,2-ジブロモベンゼン10g、ビス(ピナコラート)ジボロン23.7g、酢酸カリウム12.5g、予めモレキュラーシーブス4Aで脱水した1,4-ジオキサン150ml、[1,1’-ビス(ジフェニルホスフィノ)フェロセン]パラジウム(II)ジクロリド-ジクロロメタン錯体(1:1)1.0gを窒素置換した反応容器に加えて加熱し、80℃で10時間攪拌した。50℃まで冷却した後、クロロホルム150mlを加え、30分攪拌した。ろ過によって不溶物を除き、濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ[担体:シリカゲル、溶離液:酢酸エチル/n-ヘキサン=1/4(v/v)]によって精製し、1,2-ビス(4,4,5,5-テトラメチル-[1,3,2]ジオキサボロラン-2-イル)ベンゼンの白色粉末7.2g(収率54%)を得た。
実施例3で合成した2,11-ビス(4,4,5,5-テトラメチル-[1,3,2]ジオキサボロラン-2-イル)トリフェニレン0.8g、実施例2で合成した6-ブロモ-2,2’-ビピリジン0.8g、2M炭酸カリウム水溶液2.3ml、テトラキス(トリフェニルホスフィン)パラジウム(0)0.1g、トルエン40ml、エタノール10mlを窒素置換した反応容器に加えて加熱し、攪拌しながら9時間還流した。室温まで冷却し、析出物をろ過によって採取した。析出物にクロロホルム1300mlを加え、不溶物をろ過によって除いた後、1,2-ジクロロベンゼンによる再結晶によって精製し、2,11-ビス(2,2’-ビピリジン-6-イル)トリフェニレン(化合物12)の淡黄白色粉末0.6g(収率71%)を得た。
窒素置換した反応容器に、2,5-ジブロモピリジン9.6g、4-ピリジンボロン酸2.5g、トルエン50ml、エタノール40ml、2M炭酸カリウム水溶液15.2ml、テトラキス(トリフェニルホスフィン)パラジウム(0)1.50gを加えて加熱し、攪拌しながら24時間還流した。室温まで冷却した後、クロロホルム500mlと水300mlを加え、分液操作を行うことによって有機層を採取した。有機層を水100mlで2回洗浄した後、無水硫酸マグネシウムで脱水した後、濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ[担体:シリカゲル、溶離液:トルエン:酢酸エチル=1:1(v/v)]によって精製し、5-ブロモ-2,4’-ビピリジンの白色粉末3.3g(収率69%)を得た。
元素分析、測定値:C;85.08、H;4.42、N;10.39、計算値(C38H24N4):C;85.05、H;4.51、N;10.44。
<3,3’’-ビス(2,2’-ビピリジン-5-イル)-1,1’:2’,1’’-ターフェニル(比較化合物1)の合成>
1H-NMR(CDCl3)で以下の26個の水素のシグナルを検出した。δ(ppm)=8.65-8.66(2H)、8.51-8.53(2H)、8.31-8.33(2H)、8.08(2H)、7.99-8.01(2H)、7.71-7.79(4H)、7.59-7.61(2H)、7.54-7.56(2H)、7.50-7.52(2H)、7.34-7.38(2H)、7.25-7.28(4H)。
<3,3’’-ビス(2,2’-ビピリジン-6-イル)-1,1’:2’,1’’-ターフェニル(比較化合物2)の合成>
1H-NMR(CDCl3)で以下の26個の水素のシグナルを検出した。δ(ppm)=8.66-8.68(4H)、8.35-8.40(4H)、7.79-7.83(2H)、7.69-7.72(2H)、7.45-7.58(8H)、7.35-7.39(4H)、7.28-7.31(2H)。
<4,4’’-ビス(2,2’-ビピリジン-6-イル)-1,1’:2’,1’’-ターフェニル(比較化合物3)の合成>
1H-NMR(CDCl3)で以下の26個の水素のシグナルを検出した。δ(ppm)=8.67(2H)、8.60(2H)、8.33(2H),8.06(4H)、7.78-7.86(4H)、7.74(2H)、7.53-7.48(4H)、7.36(4H)、7.30-7.28(2H)。
融点 ガラス転移点
本発明実施例1の化合物 338℃ なし
本発明実施例2の化合物 285℃ なし
仕事関数
本発明実施例1の化合物 5.74eV
本発明実施例2の化合物 5.69eV
本発明実施例3の化合物 5.82eV
本発明実施例4の化合物 5.73eV
本発明実施例5の化合物 6.21eV
比較のために、実施例8における電子輸送層5の材料をAlq3に代え、実施例8と同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例8における電子輸送層5の材料を前記比較化合物1に代え、実施例8と同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例8における電子輸送層5の材料を前記比較化合物2に代え、実施例8と同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例8における電子輸送層5の材料を前記比較化合物3に代え、実施例8と同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例11における電子輸送層5の材料をAlq3に代え、実施例11と同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表2にまとめて示した。
2 透明陽極
3 正孔輸送層
4 発光層
5 電子輸送層
6 電子注入層
7 陰極
Claims (10)
- 下記一般式(1)または(2)で表される、置換されたビピリジル基とトリフェニレン環構造を有する化合物。
(式中、R1~R18は、同一でも異なってもよく水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、n1、n2は、同一でも異なってもよく2または3を表す。ここで、複数個存在するR3~R8はそれぞれ互いに同一でも異なってもよい。)
(式中、R19~R39は、同一でも異なってもよく水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、n3、n4、n5は、同一でも異なってもよく2または3を表す。ここで、複数個存在するR22~R30はそれぞれ互いに同一でも異なってもよい。) - 一対の電極とその間に挟まれた少なくとも一層の有機層を有する有機エレクトロルミネッセンス素子において、下記一般式(1)または(2)で表される、置換されたビピリジル基とトリフェニレン環構造を有する化合物が、少なくとも1つの有機層の構成材料として用いられていることを特徴とする有機エレクトロルミネッセンス素子。
(式中、R1~R18は、同一でも異なってもよく水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、n1、n2は、同一でも異なってもよく2または3を表す。ここで、複数個存在するR3~R8はそれぞれ互いに同一でも異なってもよい。)
(式中、R19~R39は、同一でも異なってもよく水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、n3、n4、n5は、同一でも異なってもよく2または3を表す。ここで、複数個存在するR22~R30はそれぞれ互いに同一でも異なってもよい。) - 前記した有機層が電子輸送層であり、上記一般式(1)または(2)で表される化合物が、該電子輸送層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項7記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が電子注入層であり、上記一般式(1)または(2)で表される化合物が、該電子注入層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項7記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が発光層であり、上記一般式(1)または(2)で表される化合物が、該発光層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項7記載の有機エレクトロルミネッセンス素子。
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EP12749099.3A EP2679581B1 (en) | 2011-02-23 | 2012-02-23 | Compound containing substituted triphenyle ring structure, and organic electroluminescent element |
CN2012800104052A CN103402981A (zh) | 2011-02-23 | 2012-02-23 | 具有被取代的三亚苯环结构的化合物以及有机电致发光器件 |
KR1020137024211A KR101975067B1 (ko) | 2011-02-23 | 2012-02-23 | 치환된 트리페닐렌환 구조를 가지는 화합물 및 유기 일렉트로루미네선스 소자 |
JP2013500895A JP5453621B2 (ja) | 2011-02-23 | 2012-02-23 | 置換されたトリフェニレン環構造を有する化合物および有機エレクトロルミネッセンス素子 |
US14/001,041 US9685612B2 (en) | 2011-02-23 | 2012-02-23 | Compound having substituted triphenylene ring structure, and organic electroluminescent device |
US15/604,075 US10026903B2 (en) | 2011-02-23 | 2017-05-24 | Compound having substituted triphenylene ring structure, and organic electroluminescent device |
US15/604,088 US10797242B2 (en) | 2011-02-23 | 2017-05-24 | Compound having substituted triphenylene ring structure, and organic electroluminescent device |
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JP2015126115A (ja) * | 2013-12-26 | 2015-07-06 | 日立化成株式会社 | 電荷輸送性材料、該材料を用いたインク組成物、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、表示素子、表示装置及び照明装置 |
JP2016526291A (ja) * | 2013-05-16 | 2016-09-01 | チェイル インダストリーズ インコーポレイテッド | 有機光電子素子用発光材料、有機光電子素子および表示装置 |
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JP7002925B2 (ja) | 2017-11-13 | 2022-01-20 | 東ソー株式会社 | ジナフトテトラフェニレン化合物を含む有機エレクトロルミネッセンス素子 |
CN109575937A (zh) * | 2018-12-01 | 2019-04-05 | 四川师范大学 | 一种吐昔烯酮-苯并菲盘状液晶化合物及其制备方法 |
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US20170271595A1 (en) | 2017-09-21 |
JP2014088399A (ja) | 2014-05-15 |
US20140034936A1 (en) | 2014-02-06 |
CN103402981A (zh) | 2013-11-20 |
EP3255040A1 (en) | 2017-12-13 |
TWI508958B (zh) | 2015-11-21 |
KR101975067B1 (ko) | 2019-05-03 |
US10797242B2 (en) | 2020-10-06 |
KR20140047592A (ko) | 2014-04-22 |
EP2679581A4 (en) | 2014-08-13 |
US10026903B2 (en) | 2018-07-17 |
JPWO2012114745A1 (ja) | 2014-07-07 |
EP2679581A1 (en) | 2014-01-01 |
US9685612B2 (en) | 2017-06-20 |
JP5861843B2 (ja) | 2016-02-16 |
EP2679581B1 (en) | 2017-08-09 |
TW201240989A (en) | 2012-10-16 |
JP5453621B2 (ja) | 2014-03-26 |
US20170338417A1 (en) | 2017-11-23 |
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