JP2014531419A - NOVEL ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME - Google Patents
NOVEL ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME Download PDFInfo
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- JP2014531419A JP2014531419A JP2014528286A JP2014528286A JP2014531419A JP 2014531419 A JP2014531419 A JP 2014531419A JP 2014528286 A JP2014528286 A JP 2014528286A JP 2014528286 A JP2014528286 A JP 2014528286A JP 2014531419 A JP2014531419 A JP 2014531419A
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- aryl
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 69
- 238000005401 electroluminescence Methods 0.000 claims abstract description 9
- 125000003118 aryl group Chemical group 0.000 claims description 53
- 125000000923 (C1-C30) alkyl group Chemical group 0.000 claims description 39
- 125000001072 heteroaryl group Chemical group 0.000 claims description 33
- -1 benzocarbazolyl group Chemical group 0.000 claims description 27
- 229910052736 halogen Inorganic materials 0.000 claims description 26
- 150000002367 halogens Chemical class 0.000 claims description 25
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 20
- 229910052805 deuterium Inorganic materials 0.000 claims description 20
- 125000005104 aryl silyl group Chemical group 0.000 claims description 16
- 125000000732 arylene group Chemical group 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 15
- 150000002431 hydrogen Chemical class 0.000 claims description 14
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 12
- 125000000592 heterocycloalkyl group Chemical group 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 229910052717 sulfur Chemical group 0.000 claims description 7
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 6
- 125000005549 heteroarylene group Chemical group 0.000 claims description 6
- 125000000739 C2-C30 alkenyl group Chemical group 0.000 claims description 5
- 125000000304 alkynyl group Chemical group 0.000 claims description 5
- 125000001769 aryl amino group Chemical group 0.000 claims description 5
- 125000005842 heteroatom Chemical group 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 125000001424 substituent group Chemical group 0.000 claims description 5
- 125000006822 tri(C1-C30) alkylsilyl group Chemical group 0.000 claims description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- 125000002947 alkylene group Chemical group 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 125000005382 boronyl group Chemical group 0.000 claims description 4
- 125000002950 monocyclic group Chemical group 0.000 claims description 4
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 4
- 125000002723 alicyclic group Chemical group 0.000 claims description 3
- 125000003282 alkyl amino group Chemical group 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims description 3
- 125000003367 polycyclic group Chemical group 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 125000004653 anthracenylene group Chemical group 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 claims description 2
- 125000005566 carbazolylene group Chemical group 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 125000005584 chrysenylene group Chemical group 0.000 claims description 2
- 125000005567 fluorenylene group Chemical group 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 125000004957 naphthylene group Chemical group 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 125000005565 oxadiazolylene group Chemical group 0.000 claims description 2
- 125000005564 oxazolylene group Chemical group 0.000 claims description 2
- 239000001301 oxygen Chemical group 0.000 claims description 2
- 125000005562 phenanthrylene group Chemical group 0.000 claims description 2
- 125000005550 pyrazinylene group Chemical group 0.000 claims description 2
- 125000005548 pyrenylene group Chemical group 0.000 claims description 2
- 125000005551 pyridylene group Chemical group 0.000 claims description 2
- 125000005576 pyrimidinylene group Chemical group 0.000 claims description 2
- 125000005017 substituted alkenyl group Chemical group 0.000 claims description 2
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 2
- 125000004426 substituted alkynyl group Chemical group 0.000 claims description 2
- 125000003107 substituted aryl group Chemical group 0.000 claims description 2
- 125000005346 substituted cycloalkyl group Chemical group 0.000 claims description 2
- 239000011593 sulfur Chemical group 0.000 claims description 2
- 125000006836 terphenylene group Chemical group 0.000 claims description 2
- 125000005557 thiazolylene group Chemical group 0.000 claims description 2
- 125000005558 triazinylene group Chemical group 0.000 claims description 2
- 125000005559 triazolylene group Chemical group 0.000 claims description 2
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims 1
- 125000005730 thiophenylene group Chemical group 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 41
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 230000008025 crystallization Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 42
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 239000011541 reaction mixture Substances 0.000 description 15
- 239000002019 doping agent Substances 0.000 description 13
- 239000012044 organic layer Substances 0.000 description 11
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 9
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 0 CC1=C(C=C*)C2=CC=CC3C2C1=CCC3 Chemical compound CC1=C(C=C*)C2=CC=CC3C2C1=CCC3 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HAEQAUJYNHQVHV-UHFFFAOYSA-N 3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy-N-phenylbenzamide Chemical compound NCC1=CC(=NC(=C1)C(F)(F)F)OC=1C=C(C(=O)NC2=CC=CC=C2)C=CC=1 HAEQAUJYNHQVHV-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 125000003914 fluoranthenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC=C4C1=C23)* 0.000 description 4
- 230000005525 hole transport Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 238000001771 vacuum deposition Methods 0.000 description 4
- 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 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- ZEEBGORNQSEQBE-UHFFFAOYSA-N [2-(3-phenylphenoxy)-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound C1(=CC(=CC=C1)OC1=NC(=CC(=C1)CN)C(F)(F)F)C1=CC=CC=C1 ZEEBGORNQSEQBE-UHFFFAOYSA-N 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- 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 3
- 229910001507 metal halide Inorganic materials 0.000 description 3
- 150000005309 metal halides Chemical class 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- SAHIZENKTPRYSN-UHFFFAOYSA-N [2-[3-(phenoxymethyl)phenoxy]-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound O(C1=CC=CC=C1)CC=1C=C(OC2=NC(=CC(=C2)CN)C(F)(F)F)C=CC=1 SAHIZENKTPRYSN-UHFFFAOYSA-N 0.000 description 2
- 125000004450 alkenylene group Chemical group 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000004541 benzoxazolyl group Chemical group O1C(=NC2=C1C=CC=C2)* 0.000 description 2
- 125000000319 biphenyl-4-yl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 150000004770 chalcogenides Chemical class 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 description 1
- 125000006272 (C3-C7) cycloalkyl group Chemical group 0.000 description 1
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 description 1
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- HQJQYILBCQPYBI-UHFFFAOYSA-N 1-bromo-4-(4-bromophenyl)benzene Chemical group C1=CC(Br)=CC=C1C1=CC=C(Br)C=C1 HQJQYILBCQPYBI-UHFFFAOYSA-N 0.000 description 1
- UCCUXODGPMAHRL-UHFFFAOYSA-N 1-bromo-4-iodobenzene Chemical compound BrC1=CC=C(I)C=C1 UCCUXODGPMAHRL-UHFFFAOYSA-N 0.000 description 1
- 125000004972 1-butynyl group Chemical group [H]C([H])([H])C([H])([H])C#C* 0.000 description 1
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
- 125000006017 1-propenyl group Chemical group 0.000 description 1
- 125000000530 1-propynyl group Chemical group [H]C([H])([H])C#C* 0.000 description 1
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Natural products C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 1
- VOZBMWWMIQGZGM-UHFFFAOYSA-N 2-[4-(9,10-dinaphthalen-2-ylanthracen-2-yl)phenyl]-1-phenylbenzimidazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2N=C1C1=CC=C(C=2C=C3C(C=4C=C5C=CC=CC5=CC=4)=C4C=CC=CC4=C(C=4C=C5C=CC=CC5=CC=4)C3=CC=2)C=C1 VOZBMWWMIQGZGM-UHFFFAOYSA-N 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- 125000000069 2-butynyl group Chemical group [H]C([H])([H])C#CC([H])([H])* 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 1
- MZSAMHOCTRNOIZ-UHFFFAOYSA-N 3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy-N-phenylaniline Chemical compound NCC1=CC(=NC(=C1)C(F)(F)F)OC=1C=C(NC2=CC=CC=C2)C=CC=1 MZSAMHOCTRNOIZ-UHFFFAOYSA-N 0.000 description 1
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 1
- 125000000474 3-butynyl group Chemical group [H]C#CC([H])([H])C([H])([H])* 0.000 description 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 1
- RZDNRNCSATVHJQ-UHFFFAOYSA-N C(C1c2c3)=CC=CC1Sc2ccc3-c(cc1c2c3cccc2)ccc1[n]3-c(cc1)c2c3c1-c(ccc(-c1cccc4c1[s]c1ccccc41)c1)c1-c3ccc2 Chemical compound C(C1c2c3)=CC=CC1Sc2ccc3-c(cc1c2c3cccc2)ccc1[n]3-c(cc1)c2c3c1-c(ccc(-c1cccc4c1[s]c1ccccc41)c1)c1-c3ccc2 RZDNRNCSATVHJQ-UHFFFAOYSA-N 0.000 description 1
- OMBKRODHNYMHAR-UHFFFAOYSA-N CC(C1)C(c2cccc(-[n](c3ccccc3c3c4)c3ccc4-[n]3c(cccc4)c4c4ccccc34)c2)=CC=C1c1ccc-2c3c1cccc3-c1ccccc-21 Chemical compound CC(C1)C(c2cccc(-[n](c3ccccc3c3c4)c3ccc4-[n]3c(cccc4)c4c4ccccc34)c2)=CC=C1c1ccc-2c3c1cccc3-c1ccccc-21 OMBKRODHNYMHAR-UHFFFAOYSA-N 0.000 description 1
- LTQZSKVORFCREJ-UHFFFAOYSA-N CC(C1)C=C2c3c1c(-c1cc(-c(cc4)ccc4-[n](c(cccc4)c4c4c5)c4ccc5-[n]4c(cccc5)c5c5c4cccc5)ccc1)ccc3-c1ccccc21 Chemical compound CC(C1)C=C2c3c1c(-c1cc(-c(cc4)ccc4-[n](c(cccc4)c4c4c5)c4ccc5-[n]4c(cccc5)c5c5c4cccc5)ccc1)ccc3-c1ccccc21 LTQZSKVORFCREJ-UHFFFAOYSA-N 0.000 description 1
- LDJGOMSDOYMSJY-UHFFFAOYSA-N CC(CC(C)(C1)[n]2c3ccccc3c3c2cccc3)c2c1c1ccccc1[n]2-c1cccc(-c(cc2)c3c4c2-c2ccccc2-c4ccc3)c1 Chemical compound CC(CC(C)(C1)[n]2c3ccccc3c3c2cccc3)c2c1c1ccccc1[n]2-c1cccc(-c(cc2)c3c4c2-c2ccccc2-c4ccc3)c1 LDJGOMSDOYMSJY-UHFFFAOYSA-N 0.000 description 1
- KXHBGUMNRLQYLD-UHFFFAOYSA-N CC1(C=CC(c(cc2c3c4cccc3)ccc2[n]4-c2ccc-3c4c2cccc4-c2cc(-c4cccc5c4[o]c4ccccc54)ccc-32)=CC11)Oc2c1cccc2 Chemical compound CC1(C=CC(c(cc2c3c4cccc3)ccc2[n]4-c2ccc-3c4c2cccc4-c2cc(-c4cccc5c4[o]c4ccccc54)ccc-32)=CC11)Oc2c1cccc2 KXHBGUMNRLQYLD-UHFFFAOYSA-N 0.000 description 1
- ODUMJMWXSITMLV-UHFFFAOYSA-N CC1(CC=Cc2c(cc3)-c4cccc(-c(cc5)ccc5-[n](c5ccccc5c5c6)c5ccc6-c(cc5)cc(c6c7cccc6)c5[n]7-c5ccccc5)c4)c2c3-c2c1cccc2 Chemical compound CC1(CC=Cc2c(cc3)-c4cccc(-c(cc5)ccc5-[n](c5ccccc5c5c6)c5ccc6-c(cc5)cc(c6c7cccc6)c5[n]7-c5ccccc5)c4)c2c3-c2c1cccc2 ODUMJMWXSITMLV-UHFFFAOYSA-N 0.000 description 1
- VWYLQCSEFCYBPI-UHFFFAOYSA-N CC1(c2ccc(C(C3)C=CC=C3[n]3c(ccc(-c4ccc5[o]c6ccccc6c5c4)c4)c4c4ccccc34)cc2)c(cccc2-c3ccccc33)c2C3=CC1 Chemical compound CC1(c2ccc(C(C3)C=CC=C3[n]3c(ccc(-c4ccc5[o]c6ccccc6c5c4)c4)c4c4ccccc34)cc2)c(cccc2-c3ccccc33)c2C3=CC1 VWYLQCSEFCYBPI-UHFFFAOYSA-N 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 1
- YXLXNENXOJSQEI-UHFFFAOYSA-L Oxine-copper Chemical compound [Cu+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 YXLXNENXOJSQEI-UHFFFAOYSA-L 0.000 description 1
- 229910003564 SiAlON Inorganic materials 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- REAYFGLASQTHKB-UHFFFAOYSA-N [2-[3-(1H-pyrazol-4-yl)phenoxy]-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound N1N=CC(=C1)C=1C=C(OC2=NC(=CC(=C2)CN)C(F)(F)F)C=CC=1 REAYFGLASQTHKB-UHFFFAOYSA-N 0.000 description 1
- ABRVLXLNVJHDRQ-UHFFFAOYSA-N [2-pyridin-3-yl-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound FC(C1=CC(=CC(=N1)C=1C=NC=CC=1)CN)(F)F ABRVLXLNVJHDRQ-UHFFFAOYSA-N 0.000 description 1
- CUJRVFIICFDLGR-UHFFFAOYSA-N acetylacetonate Chemical compound CC(=O)[CH-]C(C)=O CUJRVFIICFDLGR-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- UUESRJFGZMCELZ-UHFFFAOYSA-K aluminum;2-methylquinoline-8-carboxylate;4-phenylphenolate Chemical compound [Al+3].C1=CC([O-])=CC=C1C1=CC=CC=C1.C1=CC=C(C([O-])=O)C2=NC(C)=CC=C21.C1=CC=C(C([O-])=O)C2=NC(C)=CC=C21 UUESRJFGZMCELZ-UHFFFAOYSA-K 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 1
- 125000002047 benzodioxolyl group Chemical group O1OC(C2=C1C=CC=C2)* 0.000 description 1
- 125000000499 benzofuranyl group Chemical group O1C(=CC2=C1C=CC=C2)* 0.000 description 1
- 125000005874 benzothiadiazolyl group Chemical group 0.000 description 1
- 125000001164 benzothiazolyl group Chemical group S1C(=NC2=C1C=CC=C2)* 0.000 description 1
- 125000004196 benzothienyl group Chemical group S1C(=CC2=C1C=CC=C2)* 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- ZHPMSEJMMLNOEB-UHFFFAOYSA-N c(cc1)cc(c2c3cccc2)c1[n]3-c(cc1c2c3cccc2)ccc1[n]3-c(cc1)ccc1-c(cc1)c2c3c1-c(ccc(-c1cccc4c1[o]c1ccccc41)c1)c1-c3ccc2 Chemical compound c(cc1)cc(c2c3cccc2)c1[n]3-c(cc1c2c3cccc2)ccc1[n]3-c(cc1)ccc1-c(cc1)c2c3c1-c(ccc(-c1cccc4c1[o]c1ccccc41)c1)c1-c3ccc2 ZHPMSEJMMLNOEB-UHFFFAOYSA-N 0.000 description 1
- VOIPUUHCPJLTQF-UHFFFAOYSA-N c(cc1)ccc1-[n](c(cccc1)c1c1c2)c1ccc2-c(cc1c2ccccc22)ccc1[n]2-c1cc(-c(cc2)ccc2-c2ccc-3c4c2cccc4-c2ccccc-32)ccc1 Chemical compound c(cc1)ccc1-[n](c(cccc1)c1c1c2)c1ccc2-c(cc1c2ccccc22)ccc1[n]2-c1cc(-c(cc2)ccc2-c2ccc-3c4c2cccc4-c2ccccc-32)ccc1 VOIPUUHCPJLTQF-UHFFFAOYSA-N 0.000 description 1
- KIJDFAJIPTWQEI-UHFFFAOYSA-N c(cc1-2)ccc1-c1ccc(-c3cc(-c(cc4)ccc4-[n](c(cccc4)c4c4c5)c4ccc5-c(cc4)cc5c4[o]c4c5cccc4)ccc3)c3c1c-2ccc3 Chemical compound c(cc1-2)ccc1-c1ccc(-c3cc(-c(cc4)ccc4-[n](c(cccc4)c4c4c5)c4ccc5-c(cc4)cc5c4[o]c4c5cccc4)ccc3)c3c1c-2ccc3 KIJDFAJIPTWQEI-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000000259 cinnolinyl group Chemical group N1=NC(=CC2=CC=CC=C12)* 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 125000001316 cycloalkyl alkyl group Chemical group 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 125000005509 dibenzothiophenyl group Chemical group 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 125000002541 furyl group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 125000003453 indazolyl group Chemical group N1N=C(C2=C1C=CC=C2)* 0.000 description 1
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 125000001041 indolyl group Chemical group 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- MILUBEOXRNEUHS-UHFFFAOYSA-N iridium(3+) Chemical class [Ir+3] MILUBEOXRNEUHS-UHFFFAOYSA-N 0.000 description 1
- AOZVYCYMTUWJHJ-UHFFFAOYSA-K iridium(3+) pyridine-2-carboxylate Chemical compound [Ir+3].[O-]C(=O)C1=CC=CC=N1.[O-]C(=O)C1=CC=CC=N1.[O-]C(=O)C1=CC=CC=N1 AOZVYCYMTUWJHJ-UHFFFAOYSA-K 0.000 description 1
- 125000001977 isobenzofuranyl group Chemical group C=1(OC=C2C=CC=CC12)* 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
- 125000000904 isoindolyl group Chemical group C=1(NC=C2C=CC=CC12)* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000005956 isoquinolyl group Chemical group 0.000 description 1
- 125000001786 isothiazolyl group Chemical group 0.000 description 1
- 125000000842 isoxazolyl group Chemical group 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- DLEDOFVPSDKWEF-UHFFFAOYSA-N lithium butane Chemical compound [Li+].CCC[CH2-] DLEDOFVPSDKWEF-UHFFFAOYSA-N 0.000 description 1
- IMKMFBIYHXBKRX-UHFFFAOYSA-M lithium;quinoline-2-carboxylate Chemical compound [Li+].C1=CC=CC2=NC(C(=O)[O-])=CC=C21 IMKMFBIYHXBKRX-UHFFFAOYSA-M 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- MZRVEZGGRBJDDB-UHFFFAOYSA-N n-Butyllithium Substances [Li]CCCC MZRVEZGGRBJDDB-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
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 125000001715 oxadiazolyl group Chemical group 0.000 description 1
- 125000002971 oxazolyl group Chemical group 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000737 periodic effect 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
- 125000001792 phenanthrenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C=CC12)* 0.000 description 1
- 125000004934 phenanthridinyl group Chemical group C1(=CC=CC2=NC=C3C=CC=CC3=C12)* 0.000 description 1
- 125000001644 phenoxazinyl group Chemical group C1(=CC=CC=2OC3=CC=CC=C3NC12)* 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 125000003226 pyrazolyl group Chemical group 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- 125000005493 quinolyl group Chemical group 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical group 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
- 239000010703 silicon Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 description 1
- 125000005247 tetrazinyl group Chemical group N1=NN=NC(=C1)* 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000003960 triphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C3=CC=CC=C3C12)* 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000002061 vacuum sublimation Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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Abstract
本発明は、新規化合物およびそれを含む有機エレクトロルミネッセンス素子に関する。本発明に係る化合物は電子を輸送するのに高い効率を有するので、素子を製造する場合の結晶化を防ぐことができ、ならびにそれらは層の形成に適合性があるので、素子の電流特性を改善し、最後に、それらは、従来の材料を含む素子と比較して、低い駆動電圧、高度な電力効率、および改善された発光効率および寿命特性を有する有機エレクトロルミネッセンス素子を製造できる。【選択図】なしThe present invention relates to a novel compound and an organic electroluminescence device containing the same. Since the compounds according to the present invention have a high efficiency in transporting electrons, it is possible to prevent crystallization when manufacturing the device, and since they are compatible with the formation of layers, the current characteristics of the device can be reduced. Improved, and finally, they can produce organic electroluminescent devices with lower drive voltage, higher power efficiency, and improved luminous efficiency and lifetime characteristics compared to devices comprising conventional materials. [Selection figure] None
Description
本発明は、新規有機エレクトロルミネッセンス化合物およびこれを使用した有機エレクトロルミネッセンス素子に関する。 The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device using the same.
エレクトロルミネッセンス(EL)素子は、広い視野角、高いコントラスト比を提供し、より速い応答時間を有するという点で、他の種類のディスプレイ素子より利点を有する、自己発光型素子である。有機EL素子は最初に、発光層を形成する為の材料として、芳香族ジアミン、およびアルミニウム錯体である小分子を使用することにより、Eastman Kodakによって開発された[Appl.Phys.Lett.51,913,1987]。 An electroluminescent (EL) device is a self-luminous device that offers advantages over other types of display devices in that it provides a wide viewing angle, a high contrast ratio, and has a faster response time. Organic EL devices were first developed by Eastman Kodak by using aromatic diamines and small molecules that are aluminum complexes as materials for forming the light-emitting layer [Appl. Phys. Lett. 51, 913, 1987].
有機EL素子において発光効率を決定する最も重要な要因は、発光材料である。現在まで、蛍光材料が発光材料として広く使用されている。しかし、エレクトロルミネッセンス機構を考慮して、リン光性材料は、理論的に発光効率を4倍に高める最適な方法の1つである。イリジウム(III)錯体は、赤、緑および青の材料としてそれぞれ、ビス(2−(2’−ベンゾチエニル)−ピリジネート−N,C3’)イリジウム(アセチルアセトネート)((acac)Ir(btp)2)、トリス(2−フェニルピリジン)イリジウム(Ir(ppy)3)、およびビス(4,6−ジフルオロフェニルピリジネート−N,C2)ピコリネートイリジウム(Firpic)を含む、リン光性材料として広く知られている。特に、多くのリン光性材料は、最近、日本、欧州、および米国にて研究されている。 The most important factor for determining the luminous efficiency in the organic EL element is the light emitting material. To date, fluorescent materials have been widely used as luminescent materials. However, considering the electroluminescence mechanism, phosphorescent materials are theoretically one of the best ways to increase luminous efficiency by a factor of four. Iridium (III) complexes are bis (2- (2′-benzothienyl) -pyridinate-N, C3 ′) iridium (acetylacetonate) ((acac) Ir (btp) as red, green and blue materials, respectively. 2 ), phosphorescent materials including tris (2-phenylpyridine) iridium (Ir (ppy) 3 ), and bis (4,6-difluorophenylpyridinate-N, C2) picolinate iridium (Firpic) Widely known. In particular, many phosphorescent materials have recently been studied in Japan, Europe, and the United States.
現在まで、4,4’−N,N’−ジカルバゾール−ビフェニル(CBP)は、リン光性物質のための最も広く知られているホスト材料である。更に、ホールブロッキング層の為のバトクプロイン(BCP)およびアルミニウム(III)ビス(2−メチル−8−キノリネート)(4−フェニルフェノレート)(BAlq)を使用した有機EL素子が知られており、パイオニア(日本)等は、ホスト材料としてBAlqの誘導体を利用した高性能な有機EL素子を開発した。 To date, 4,4'-N, N'-dicarbazole-biphenyl (CBP) is the most widely known host material for phosphorescent materials. Furthermore, organic EL devices using batocuproine (BCP) and aluminum (III) bis (2-methyl-8-quinolinate) (4-phenylphenolate) (BAlq) for the hole blocking layer are known and are pioneers. (Japan) and others have developed a high-performance organic EL device using a BAlq derivative as a host material.
これらの材料は良好な発光特性を提供するが、それらは以下の欠点を有する。それらの低いガラス転移温度および不十分な熱安定性により、真空中の高温堆積プロセス中に、それらの分解が発生し得る。有機EL素子の電力効率は、[(π/電圧)×電流効率]により与えられ、電力効率は、電圧に反比例するので、電力消費を下げるために、電力効率を上げるべきである。リン光性材料を含む有機EL素子は、蛍光材料を含むものよりも、遥かに高い電流効率(cd/A)を提供するが、BAlqまたはCBPなどの従来のリン光性材料を使用した有機EL素子は、蛍光材料を使用したものより高い駆動電圧を有する。このように、従来のリン光性材料を使用したEL素子は電力効率(lm/W)の観点で利点を有さない。さらに、有機EL素子の動作寿命は短い。したがって、良好な特性を有する赤色ホスト材料が研究のために必要とされている。 Although these materials provide good luminescent properties, they have the following disadvantages. Due to their low glass transition temperature and poor thermal stability, their decomposition can occur during high temperature deposition processes in vacuum. The power efficiency of the organic EL element is given by [(π / voltage) × current efficiency]. Since the power efficiency is inversely proportional to the voltage, the power efficiency should be increased in order to reduce power consumption. Organic EL devices containing phosphorescent materials provide much higher current efficiency (cd / A) than those containing fluorescent materials, but organic EL using conventional phosphorescent materials such as BAlq or CBP The device has a higher drive voltage than that using a fluorescent material. Thus, the EL element using the conventional phosphorescent material has no advantage in terms of power efficiency (lm / W). Furthermore, the operating life of the organic EL element is short. Therefore, a red host material with good properties is needed for research.
特開平11−149987は、N−カルバゾリル基が、正孔注入および輸送層としても機能する発光層のための材料としてフルオランテン構造、およびルブレン(lublene)に結合される化合物を含む素子を開示している。しかしながら、その素子は黄色を発光する。前記文献はまた、緑色を発光し、N−カルバゾリル基が、正孔注入および輸送層のための材料としてのフルオランテン構造に結合される化合物を含む蛍光エレクトロルミネッセンス素子を開示している。 Japanese Patent Application Laid-Open No. 11-149987 discloses a device in which an N-carbazolyl group includes a fluoranthene structure as a material for a light emitting layer that also functions as a hole injection and transport layer, and a compound bonded to rubrene. Yes. However, the device emits yellow light. Said document also discloses a fluorescent electroluminescent device comprising a compound that emits green light and an N-carbazolyl group is bonded to a fluoranthene structure as a material for the hole injection and transport layer.
しかしながら、それは、赤色を発光し、N−カルバゾリル基が、発光層のためのホスト材料としてのフルオランテン構造に結合される化合物を含む、リン光性エレクトロルミネッセンス素子を開示していない。 However, it does not disclose a phosphorescent electroluminescent device that emits red light and includes a compound in which the N-carbazolyl group is bonded to a fluoranthene structure as a host material for the light emitting layer.
本発明の目的は、素子に高い発光効率および長い動作寿命時間を与え、赤色光を発光する有機エレクトロルミネッセンス化合物、ならびに発光材料として前記化合物を使用して高い効率および長い寿命時間を有する有機エレクトロルミネッセンス素子を提供することである。 An object of the present invention is to provide an organic electroluminescent compound that emits red light by giving the device high luminous efficiency and long operating lifetime, and organic electroluminescence having high efficiency and long lifetime using the compound as a luminescent material It is to provide an element.
本発明者らは、上記の目的が、以下の式1:
Zは、
L1は、単結合、置換もしくは非置換3〜30員ヘテロアリーレン基、または置換もしくは非置換(C6−C30)アリーレン基を表し、
Xは、−O−、−S−、−CR11R12−または−NR13−を表し、
R11〜R13は各々独立して、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、または置換もしくは非置換3〜30員ヘテロアリール基を表し、
R1〜R6は各々独立して、水素、重水素、ハロゲン、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、置換もしくは非置換3〜30員ヘテロアリール基、置換もしくは非置換(C3−C30)シクロアルキル基、置換もしくは非置換5〜7員ヘテロシクロアルキル基、置換もしくは非置換(C6−C30)アリール(C1−C30)アルキル基、少なくとも1つの(C3−C30)シクロアルキルと縮合した置換もしくは非置換(C6−C30)アリール基、少なくとも1つの置換もしくは非置換芳香環と縮合した5〜7員ヘテロシクロアルキル基、少なくとも1つの置換もしくは非置換芳香環と縮合した(C3−C30)シクロアルキル基、−NR14R15、−SiR16R17R18、−SR19、−OR20、(C2−C30)アルケニル基、(C2−C30)アルキニル基、シアノ基、またはニトロ基を表し、
R14〜R20は各々独立して、水素、重水素、ハロゲン、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、置換もしくは非置換3〜30員ヘテロアリール基を表し、あるいは隣接する置換基(複数も含む)に結合して単環または多環、(C5−C30)脂環式環または芳香環を形成し、その炭素原子(複数も含む)は、窒素、酸素および硫黄から選択される少なくとも1つのヘテロ原子で置換されてもよく、
a、dおよびeの各々は独立して、1〜4の整数を表し、a、dまたはeが2以上の整数である場合、R1の各々、R4の各々およびR5の各々は、同じまたは異なり、
bおよびfの各々は独立して、1〜3の整数を表し、bまたはfが2以上の整数である場合、R2の各々およびR6の各々は、同じまたは異なり、
cは、1〜5の整数を表し、cが2以上の整数である場合、R3の各々は、同じまたは異なり、
mは、1、2または3を表し、
ヘテロシクロアルキル基およびヘテロアリール(アリーレン)基は、B、N、O、S、P(=O)、SiおよびPから選択される少なくとも1つのヘテロ原子を含む)
により表される有機エレクトロルミネッセンス化合物により達成され得ることを見出した。
The inventors have stated that the above objective is based on the following formula 1:
Z is
L 1 represents a single bond, a substituted or unsubstituted 3 to 30-membered heteroarylene group, or a substituted or unsubstituted (C6-C30) arylene group,
X represents —O—, —S—, —CR 11 R 12 — or —NR 13 —;
R 11 to R 13 each independently represents a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, or a substituted or unsubstituted 3 to 30 membered heteroaryl group;
R 1 to R 6 are each independently hydrogen, deuterium, halogen, substituted or unsubstituted (C1-C30) alkyl group, substituted or unsubstituted (C6-C30) aryl group, substituted or unsubstituted 3 to 30 members. A heteroaryl group, a substituted or unsubstituted (C3-C30) cycloalkyl group, a substituted or unsubstituted 5- to 7-membered heterocycloalkyl group, a substituted or unsubstituted (C6-C30) aryl (C1-C30) alkyl group, at least 1 A substituted or unsubstituted (C6-C30) aryl group fused with one (C3-C30) cycloalkyl, a 5-7 membered heterocycloalkyl group fused with at least one substituted or unsubstituted aromatic ring, at least one substituted or unsubstituted engaged substituted aromatic ring condensed (C3-C30) cycloalkyl group, -NR 14 R 15, -SiR 16 R 17 R 18 , —SR 19 , —OR 20 , (C 2 -C 30) alkenyl group, (C 2 -C 30) alkynyl group, cyano group, or nitro group,
R 14 to R 20 are each independently hydrogen, deuterium, halogen, substituted or unsubstituted (C1-C30) alkyl group, substituted or unsubstituted (C6-C30) aryl group, substituted or unsubstituted 3 to 30 members. Represents a heteroaryl group, or is bonded to an adjacent substituent (s) to form a monocyclic or polycyclic, (C5-C30) alicyclic or aromatic ring, and its carbon atom (s) May be substituted with at least one heteroatom selected from nitrogen, oxygen and sulfur;
each of a, d and e independently represents an integer of 1 to 4, and when a, d or e is an integer of 2 or more, each of R 1 , each of R 4 and each of R 5 is Same or different,
each of b and f independently represents an integer of 1 to 3, and when b or f is an integer of 2 or more, each of R 2 and each of R 6 are the same or different;
c represents an integer of 1 to 5, and when c is an integer of 2 or more, each R 3 is the same or different;
m represents 1, 2 or 3;
Heterocycloalkyl and heteroaryl (arylene) groups contain at least one heteroatom selected from B, N, O, S, P (═O), Si and P)
It has been found that this can be achieved by an organic electroluminescent compound represented by:
本発明に係る有機エレクトロルミネッセンス化合物は、電子を輸送する際に高い効率を有するので、素子を製造する場合に結晶化が防がれ得る。さらに、その化合物は良好な層形成性を有し、素子の電流特性を改善する。したがって、それらは、低い駆動電圧および高い電力効率を有する有機エレクトロルミネッセンス素子を製造できる。 Since the organic electroluminescent compound according to the present invention has a high efficiency when transporting electrons, crystallization can be prevented when a device is manufactured. Furthermore, the compound has good layer forming properties and improves the current characteristics of the device. Thus, they can produce organic electroluminescent devices with low drive voltage and high power efficiency.
本明細書以下に本発明を詳細に記載する。しかしながら、以下の詳細は本発明を説明することを目的とし、本発明の範囲を限定することを意図するものでは決してない。 The present invention is described in detail below. However, the following details are intended to illustrate the present invention and are in no way intended to limit the scope of the invention.
本発明は、上記の式1により表される有機エレクトロルミネッセンス化合物、その化合物を含む有機エレクトロルミネッセンス材料、およびその材料を含む有機エレクトロルミネッセンス素子に関する。 The present invention relates to an organic electroluminescent compound represented by the above formula 1, an organic electroluminescent material including the compound, and an organic electroluminescent element including the material.
本明細書において、「アルキル」は、メチル、エチル、n−プロピル、イソプロピル、n−ブチル、イソブチル、tert−ブチルなどを含み、「アルケニル」は、ビニル、1−プロペニル、2−プロペニル、1−ブテニル、2−ブテニル、3−ブテニル、2−メチルブト−2−エニルなどを含み、「アルキニル」は、エチニル、1−プロピニル、2−プロピニル、1−ブチニル、2−ブチニル、3−ブチニル、1−メチルペント−2−イニルなどを含み、「シクロアルキル」は、シクロプロピル、シクロブチル、シクロペンチル、シクロヘキシルなどを含み、「5〜7員ヘテロシクロアルキル」は、B、N、O、S、P(=O)、SiおよびP、好ましくはO、SおよびN、ならびに5〜7個の環骨格原子から選択される少なくとも1つのヘテロ原子を有するシクロアルキルであり、テトラヒドロフラン、ピロリジン、チオラン、テトラヒドロフランなどを含み、「アリール(アリーレン)」は、芳香族炭化水素から誘導される単環または縮合環であり、フェニル、ビフェニル、テルフェニル、ナフチル、フルオレニル、フェナントレニル、アントラセニル、インデニル、トリフェニレニル、ピレニル、テトラセニル、ペリレニル、クリセニル、ナフタセニル、フルオランテニルなどを含み、「3〜30員ヘテロアリール(アリーレン)」は、B、N、O、S、P(=O)、SiおよびPからなる群から選択される少なくとも1個、好ましくは1〜4個のヘテロ原子、ならびに2〜30個の環骨格原子を有するアリール基であり、単環または少なくとも1つのベンゼン環と縮合した縮合環であり、部分的に飽和されてもよく、単結合(複数も含む)を介して少なくとも1つのヘテロアリールまたはアリール基をヘテロアリール基に連結することにより形成されたものであってもよく、フリル、チオフェニル、ピロリル、イミダゾリル、ピラゾリル、チアゾリル、チアジアゾリル、イソチアゾリル、イソオキサゾリル、オキサゾリル、オキサジアゾリル、トリアジニル、テトラジニル、トリアゾリル、テトラゾリル、フラザニル、ピリジル、ピラジニル、ピリミジニル、ピリダジニルなどを含む単環型のヘテロアリール、ならびにベンゾフラニル、ベンゾチオフェニル、イソベンゾフラニル、ジベンゾフラニル、ジベンゾチオフェニル、ベンゾイミダゾリル、ベンゾチアゾリル、ベンゾイソチアゾリル、ベンゾイソオキサゾリル、ベンゾオキサゾリル、ベンゾオキサゾリル、イソインドリル、インドリル、インダゾリル、ベンゾチアジアゾリル、キノリル、イソキノリル、シンノリニル、キナゾリニル、キノキサリニル、カルバゾリル、フェノキサジニル、フェナントリジニル、ベンゾジオキソリルなどを含む縮合環型のヘテロアリールを含む。さらに、「ハロゲン」は、F、Cl、BrおよびIを含む。 As used herein, “alkyl” includes methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl and the like, and “alkenyl” refers to vinyl, 1-propenyl, 2-propenyl, 1- Including butenyl, 2-butenyl, 3-butenyl, 2-methylbut-2-enyl and the like, “alkynyl” refers to ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1- Methylcycloalkyl-2-ynyl and the like, “cycloalkyl” includes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and the like, and “5- to 7-membered heterocycloalkyl” includes B, N, O, S, P (═O ), Si and P, preferably O, S and N, and at least one selected from 5 to 7 ring skeleton atoms Cycloalkyl having a tera atom, including tetrahydrofuran, pyrrolidine, thiolane, tetrahydrofuran, etc. “Aryl (arylene)” is a monocyclic ring or condensed ring derived from an aromatic hydrocarbon, such as phenyl, biphenyl, terphenyl , Naphthyl, fluorenyl, phenanthrenyl, anthracenyl, indenyl, triphenylenyl, pyrenyl, tetracenyl, perylenyl, chrycenyl, naphthacenyl, fluoranthenyl, etc., and “3 to 30 membered heteroaryl (arylene)” is B, N, O, S , P (═O), Si and P, an aryl group having at least 1, preferably 1 to 4 heteroatoms, and 2 to 30 ring skeleton atoms, Condensed with at least one benzene ring A fused ring that may be partially saturated or formed by linking at least one heteroaryl or aryl group to a heteroaryl group via a single bond (s) Monocyclic heteroaryl, including, furyl, thiophenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, thiadiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, triazinyl, tetrazinyl, triazolyl, tetrazolyl, flazanyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl And benzofuranyl, benzothiophenyl, isobenzofuranyl, dibenzofuranyl, dibenzothiophenyl, benzimidazolyl, benzothiazolyl, benzoisothiazolyl, benzoisoxazo Condensations including ril, benzoxazolyl, benzoxazolyl, isoindolyl, indolyl, indazolyl, benzothiadiazolyl, quinolyl, isoquinolyl, cinnolinyl, quinazolinyl, quinoxalinyl, carbazolyl, phenoxazinyl, phenanthridinyl, benzodioxolyl Includes cyclic heteroaryl. Furthermore, “halogen” includes F, Cl, Br and I.
本明細書において、(C1−C30)アルキル基は、好ましくは、(C1−C20)アルキル基、より好ましくは、(C1−C6)アルキル基であり、(C6−C30)アリール基は、好ましくは、(C6−C21)アリール基であり、3〜30員ヘテロアリール基は、好ましくは、3〜21員ヘテロアリール基であり、(C3−C30)シクロアルキル基は、好ましくは、(C3−C20)シクロアルキル基、より好ましくは、(C3−C7)シクロアルキル基である。 In the present specification, the (C1-C30) alkyl group is preferably a (C1-C20) alkyl group, more preferably a (C1-C6) alkyl group, and a (C6-C30) aryl group is preferably , A (C6-C21) aryl group, a 3-30 membered heteroaryl group is preferably a 3-21 membered heteroaryl group, and a (C3-C30) cycloalkyl group is preferably (C3-C20). ) A cycloalkyl group, more preferably a (C3-C7) cycloalkyl group.
本明細書において、「置換または非置換」という用語における「置換」とは、特定の官能基における水素原子が別の原子または基、すなわち置換基と置換されることを意味する。 In the present specification, the term “substituted” in the term “substituted or unsubstituted” means that a hydrogen atom in a specific functional group is replaced with another atom or group, that is, a substituent.
式1のL1、R1〜R6およびR11〜R20基における置換アルキル基、置換アルケニル基、置換アルキニル基、置換アリール(アリーレン)基、置換ヘテロアリール(アリーレン)基、置換シクロアルキル(アルキレン)基、置換ヘテロシクロアルキル基および置換アラルキル基の置換基は各々独立して、重水素、ハロゲン、ハロゲンで置換されたまたは置換されていない(C1−C30)アルキル基、(C6−C30)アリール基、(C6−C30)アリールで置換されたまたは置換されていない3〜30員ヘテロアリール基、5〜7員ヘテロシクロアルキル基、(C3−C30)シクロアルキル基、トリ(C1−C30)アルキルシリル基、トリ(C6−C30)アリールシリル基、ジ(C1−C30)アルキル(C6−C30)アリールシリル基、(C1−C30)アルキルジ(C6−C30)アリールシリル基、(C2−C30)アルケニル基、(C2−C30)アルキニル基、シアノ基、カルバゾリル基、ベンゾカルバゾリル基、ジベンゾカルバゾリル基、ジ(C1−C30)アルキルアミノ基、ジ(C6−C30)アリールアミノ基、(C1−C30)アルキル(C6−C30)アリールアミノ基、ジ(C6−C30)アリールボロニル基、ジ(C1−C30)アルキルボロニル基、(C1−C30)アルキル(C6−C30)アリールボロニル基、(C6−C30)アリール(C1−C30)アルキル基、(C1−C30)アルキル(C6−C30)アリール基、カルボキシル基、ニトロ基、およびヒドロキシル基からなる群から選択される少なくとも1つであり、好ましくは、重水素、ハロゲン、置換もしくは非置換(C1−C6)アルキル基、置換もしくは非置換(C6−C21)アリール基および置換もしくは非置換3〜21員ヘテロアリール基、トリ(C6−C12)アリールシリル基からなる群から選択される少なくとも1つであり、より好ましくは、重水素、ハロゲン、非置換(C1−C6)アルキル基、非置換(C6−C21)アリール基、非置換3〜21員ヘテロアリール基およびトリ(C6−C12)アリールシリル基からなる群から選択される少なくとも1つである。 A substituted alkyl group, a substituted alkenyl group, a substituted alkynyl group, a substituted aryl (arylene) group, a substituted heteroaryl (arylene) group, a substituted cycloalkyl (in the L 1 , R 1 to R 6 and R 11 to R 20 groups of the formula 1 (Alkylene) group, substituted heterocycloalkyl group and substituted aralkyl group are each independently a deuterium, halogen, halogen-substituted or unsubstituted (C1-C30) alkyl group, (C6-C30) Aryl group, (C6-C30) aryl-substituted or unsubstituted 3- to 30-membered heteroaryl group, 5- to 7-membered heterocycloalkyl group, (C3-C30) cycloalkyl group, tri (C1-C30) Alkylsilyl group, tri (C6-C30) arylsilyl group, di (C1-C30) alkyl (C6-C3) ) Arylsilyl group, (C1-C30) alkyldi (C6-C30) arylsilyl group, (C2-C30) alkenyl group, (C2-C30) alkynyl group, cyano group, carbazolyl group, benzocarbazolyl group, dibenzocarba Zolyl group, di (C1-C30) alkylamino group, di (C6-C30) arylamino group, (C1-C30) alkyl (C6-C30) arylamino group, di (C6-C30) arylboronyl group, Di (C1-C30) alkyl boronyl group, (C1-C30) alkyl (C6-C30) aryl boronyl group, (C6-C30) aryl (C1-C30) alkyl group, (C1-C30) alkyl (C6- C30) At least one selected from the group consisting of an aryl group, a carboxyl group, a nitro group, and a hydroxyl group Preferably, deuterium, halogen, substituted or unsubstituted (C1-C6) alkyl group, substituted or unsubstituted (C6-C21) aryl group and substituted or unsubstituted 3 to 21 membered heteroaryl group, tri (C6 -C12) at least one selected from the group consisting of arylsilyl groups, more preferably deuterium, halogen, unsubstituted (C1-C6) alkyl group, unsubstituted (C6-C21) aryl group, unsubstituted It is at least one selected from the group consisting of a 3- to 21-membered heteroaryl group and a tri (C6-C12) arylsilyl group.
本発明の一実施形態によれば、上記の式1において、L1は、単結合、3〜30員ヘテロアリーレン基または(C6−C30)アリーレン基を表し、Xは、−O−、−S−、−CR11R12−または−NR13−を表し、R11〜R13は各々独立して、(C1−C30)アルキル基、(C6−C30)アリール基、または3〜30員ヘテロアリール基を表し、R1〜R6は各々独立して、水素、重水素、ハロゲン、(C1−C30)アルキル基、(C6−C30)アリール基、3〜30員ヘテロアリール基またはカルバゾリル基を表し、mは、1または2を表し、L1におけるヘテロアリーレンおよびアリーレン基、R1〜R6およびR11〜R13におけるアルキル、アリール、ヘテロアリールおよびカルバゾリル基は、重水素、ハロゲン、ハロゲン置換されたもしくは置換されていない(C1−C30)アルキル基、(C6−C30)アリール基、3〜30員ヘテロアリール基、トリ(C1−C30)アルキルシリル基、トリ(C6−C30)アリールシリル基、ジ(C1−C30)アルキル(C6−C30)アリールシリル基、(C1−C30)アルキルジ(C6−C30)アリールシリル基、カルバゾリル基、ベンゾカルバゾリル基およびジベンゾカルバゾリル基からなる群から選択される少なくとも1つで置換されてもよい。 According to one embodiment of the present invention, in Formula 1 above, L 1 represents a single bond, a 3- to 30-membered heteroarylene group or a (C6-C30) arylene group, and X represents —O—, —S. -, - CR 11 R 12 - or -NR 13 - represents, R 11 to R 13 are each independently, (C1-C30) alkyl group, (C6-C30) aryl group, or a 3-30 membered heteroaryl, R 1 to R 6 each independently represent hydrogen, deuterium, halogen, (C1-C30) alkyl group, (C6-C30) aryl group, 3-30 membered heteroaryl group or carbazolyl group. , m represents 1 or 2, heteroarylene and arylene groups in L 1, alkyl of R 1 to R 6 and R 11 to R 13, aryl, heteroaryl and carbazolyl groups Deuterium, halogen, halogen-substituted or unsubstituted (C1-C30) alkyl group, (C6-C30) aryl group, 3-30 membered heteroaryl group, tri (C1-C30) alkylsilyl group, tri ( C6-C30) arylsilyl group, di (C1-C30) alkyl (C6-C30) arylsilyl group, (C1-C30) alkyldi (C6-C30) arylsilyl group, carbazolyl group, benzocarbazolyl group and dibenzocarba It may be substituted with at least one selected from the group consisting of zolyl groups.
好ましくは、L1は、単結合、フェニレン、ナフチレン、ビフェニレン、テルフェニレン、アントリレン、インデニレン、フルオレニレン、フェナントリレン、トリフェニレニレン、ピレニレン、ペリレニレン、クリセニレン、ナフタセニレン、フルオランテニレン、フェニレン−ナフチレン、フリレン、チオフェニレン、ピロリレン、イミダゾリレン、ピラゾリレン、チアゾリレン、チアジアゾリレン、イソチアゾリレン、イソオキサゾリレン、オキサゾリレン、オキサジアゾリレン、トリアジニレン、テトラジニレン、トリアゾリレン、フラザニレン、ピリジレン、ピラジニレン、ピリミジニレン、ピリダジニレン、ベンゾフラニレン、ベンゾチオフェニレン、イソベンゾフラニレン、ベンゾイミダゾリレン、ベンゾチアゾリレン、ベンゾイソチアゾリレン、ベンゾイソオキサゾリレン、ベンゾオキサゾリレン、イソインドリレン、インドリレン、インダゾリレン、ベンゾチアジアゾリレン、キノリレン、イソキノリレン、シンノリニレン、キナゾリニレン、キノキサリニレン、カルバゾリレン、フェナントリジニレン、ベンゾジオキソリレン、ジベンゾフラニレンまたはジベンゾチオフェニレンを表す。 Preferably, L 1 is a single bond, phenylene, naphthylene, biphenylene, terphenylene, anthrylene, indenylene, fluorenylene, phenanthrylene, triphenylenylene, pyrenylene, peryleneylene, chrysenylene, naphthacenylene, fluoranthenylene, phenylene-naphthylene, furylene, thiol. Phenylene, pyrrolylene, imidazolylene, pyrazolylene, thiazolylene, thiadiazolylene, isothiazolylene, isoxazolylene, oxazolylene, oxadiazolylene, triazinylene, tetrazinylene, triazolylene, furazanylene, pyridylene, pyrazinylene, pyrimidinylene, benzofuranylene, benzofurylene, benzofurylene, benzofurylene Len, benzimidazolylene, benzothiazolylene, ben Zoisothiazolylene, benzoisoxazolylene, benzoxazolylene, isoindolylene, indolylene, indazolylene, benzothiadiazolylene, quinolylene, isoquinolylene, cinnolinylene, quinazolinylene, quinoxalinylene, carbazolylene, phenanthridinylene, benzodioxo Represents rylene, dibenzofuranylene or dibenzothiophenylene.
上記の式1において、L1は、好ましくは、単結合、または置換もしくは非置換(C6−C21)アリーレン基、より好ましくは、単結合、または(C1−C6)アルキル基で置換されたもしくは置換されていない(C6−C21)アリーレン基である。 In the above formula 1, L 1 is preferably a single bond, or a substituted or unsubstituted (C6-C21) arylene group, more preferably a single bond or a (C1-C6) alkyl group. (C6-C21) arylene group which is not made.
R1〜R6は各々独立して、好ましくは、水素、ハロゲン、置換もしくは非置換(C6−C21)アリール基、置換もしくは非置換3〜21員ヘテロアリール基、より好ましくは、水素、ハロゲン、ハロゲンで置換されたもしくは置換されていない(C6−C21)アリール基、重水素、(C1−C6)アルキル基、(C6−C21)アリール基、3〜21員ヘテロアリール基もしくはトリ(C6−C12)アリールシリル基、または非置換3〜21員ヘテロアリール基である。 R 1 to R 6 are each independently preferably hydrogen, halogen, substituted or unsubstituted (C 6 -C 21) aryl group, substituted or unsubstituted 3 to 21 membered heteroaryl group, more preferably hydrogen, halogen, A halogen-substituted or unsubstituted (C6-C21) aryl group, deuterium, (C1-C6) alkyl group, (C6-C21) aryl group, 3-21 membered heteroaryl group or tri (C6-C12) ) An arylsilyl group or an unsubstituted 3 to 21 membered heteroaryl group.
R11〜R13の各々は独立して、好ましくは、置換もしくは非置換(C1−C6)アルキル基、置換もしくは非置換(C6−C21)アリール基、または置換もしくは非置換3〜21員ヘテロアリール基、より好ましくは、非置換(C1−C6)アルキル基、ハロゲンで置換されたもしくは置換されていない(C6−C21)アリール基、重水素または(C1−C6)アルキル基、あるいは(C6−C21)アリール基で置換された3〜21員ヘテロアリール基である。 Each of R 11 to R 13 is independently preferably a substituted or unsubstituted (C1-C6) alkyl group, a substituted or unsubstituted (C6-C21) aryl group, or a substituted or unsubstituted 3 to 21 membered heteroaryl Groups, more preferably unsubstituted (C1-C6) alkyl groups, halogen-substituted or unsubstituted (C6-C21) aryl groups, deuterium or (C1-C6) alkyl groups, or (C6-C21) ) A 3- to 21-membered heteroaryl group substituted with an aryl group.
本発明の代表的な化合物は、以下の化合物を含む:
本発明に係る有機エレクトロルミネッセンス化合物は、以下の反応スキームに従って調製され得る。
[反応スキーム1]
[Reaction Scheme 1]
加えて、本発明は式1の有機エレクトロルミネッセンス化合物を含む有機エレクトロルミネッセンス材料およびその材料を含む有機エレクトロルミネッセンス素子を提供する。上記の材料は、単独で本発明に係る有機エレクトロルミネッセンス化合物から構成されてもよく、または一般に有機エレクトロルミネッセンス材料に使用される従来の材料をさらに含んでもよい。前記有機エレクトロルミネッセンス素子は、第1の電極、第2の電極、ならびに前記第1の電極と第2の電極との間に少なくとも1つの有機層を備える。前記有機層は本発明に係る式1の少なくとも1つの化合物を含む。さらに、前記有機層は発光層を含み、その発光層において式1の有機エレクトロルミネッセンス化合物がホスト材料として含まれる。 In addition, the present invention provides an organic electroluminescent material comprising the organic electroluminescent compound of Formula 1 and an organic electroluminescent device comprising the material. The above materials may be composed solely of the organic electroluminescent compounds according to the present invention, or may further comprise conventional materials generally used for organic electroluminescent materials. The organic electroluminescence element includes a first electrode, a second electrode, and at least one organic layer between the first electrode and the second electrode. The organic layer comprises at least one compound of formula 1 according to the present invention. Further, the organic layer includes a light emitting layer, and the organic electroluminescent compound of Formula 1 is included as a host material in the light emitting layer.
式1の有機エレクトロルミネッセンス化合物が発光層におけるホスト材料として使用される場合、1つ以上のリン光性ドーパントが一緒に使用されてもよい。本発明に係るエレクトロルミネッセンス素子に適用されるリン光性ドーパントは限定されないが、好ましくは、以下の式2により表される化合物から選択されてもよい:
R201〜R203は各々独立して、水素、重水素、ハロゲン(複数も含む)で置換されたもしくは置換されていない(C1−C30)アルキル基、(C1−C30)アルキル基(複数も含む)で置換されたもしくは置換されていない(C6−C30)アリール基、またはハロゲンを表し、
R204〜R219は各々独立して、水素、重水素、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C1−C30)アルコキシ基、置換もしくは非置換(C3−C30)シクロアルキル基、置換もしくは非置換(C2−C30)アルケニル基、置換もしくは非置換(C6−C30)アリール基、置換もしくは非置換モノ−もしくはジ−(C1−C30)アルキルアミノ基、置換もしくは非置換モノ−もしくはジ−(C6−C30)アリールアミノ基、SF5、置換もしくは非置換トリ(C1−C30)アルキルシリル基、置換もしくは非置換ジ(C1−C30)アルキル(C6−C30)アリールシリル基、置換もしくは非置換トリ(C6−C30)アリールシリル基、シアノ基またはハロゲンを表し、
R220〜R223は各々独立して、水素、重水素、ハロゲン(複数も含む)で置換されたもしくは置換されていない(C1−C30)アルキル基、または(C1−C30)アルキル基(複数も含む)で置換されたもしくは置換されていない(C6−C30)アリール基を表し、
R224およびR225は各々独立して、水素、重水素、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、またはハロゲンを表し、あるいはR224およびR225は、隣接する置換基(複数も含む)に結合して単環または多環、(C5−C30)脂環式環または芳香環を形成し、
R226は、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、置換もしくは非置換3〜30員ヘテロアリール基またはハロゲンを表し、
R227〜R229は各々独立して、水素、重水素、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基またはハロゲンを表し、
Qは、
R 201 to R 203 each independently represent a hydrogen (C 1 -C 30) alkyl group or a (C 1 -C 30) alkyl group (including a plurality) substituted or unsubstituted with hydrogen, deuterium, or halogen (s). ) Substituted or unsubstituted (C6-C30) aryl group, or halogen,
R 204 to R 219 are each independently hydrogen, deuterium, substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C1-C30) alkoxy group, a substituted or unsubstituted (C3-C30) cycloalkyl Alkyl group, substituted or unsubstituted (C2-C30) alkenyl group, substituted or unsubstituted (C6-C30) aryl group, substituted or unsubstituted mono- or di- (C1-C30) alkylamino group, substituted or unsubstituted mono - or di - (C6-C30) arylamino group, SF 5, a substituted or unsubstituted tri (C1-C30) alkylsilyl group, a substituted or unsubstituted di (C1-C30) alkyl (C6-C30) aryl silyl group, Represents a substituted or unsubstituted tri (C6-C30) arylsilyl group, cyano group or halogen;
R 220 to R 223 each independently represents a (C1-C30) alkyl group substituted with or not substituted with hydrogen, deuterium, halogen (s), or a (C1-C30) alkyl group (s). Represents a substituted or unsubstituted (C6-C30) aryl group,
R 224 and R 225 each independently represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, or a halogen, or R224 and R225 225 is bonded to adjacent substituent (s) to form a monocyclic or polycyclic, (C5-C30) alicyclic or aromatic ring;
R 226 represents a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, a substituted or unsubstituted 3 to 30 membered heteroaryl group, or halogen;
R 227 to R 229 each independently represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, or a halogen;
Q is
式2のドーパントは、以下:
本発明に係る有機エレクトロルミネッセンス素子はさらに、式1により表される有機エレクトロルミネッセンス化合物に加えて、アリールアミン系の化合物およびスチリルアリールアミン系の化合物からなる群から選択される少なくとも1つの化合物を含んでもよい。 The organic electroluminescent device according to the present invention further includes at least one compound selected from the group consisting of an arylamine-based compound and a styrylarylamine-based compound in addition to the organic electroluminescent compound represented by Formula 1. But you can.
本発明に係る有機エレクトロルミネッセンス素子において、有機層はさらに、1族金属、2族金属、第4周期の遷移金属、第5周期の遷移金属、ランタニドおよび周期表のd−遷移元素の有機金属、または前記金属を含む少なくとも1つの錯体化合物からなる群から選択される少なくとも1つの金属を含んでもよい。有機層は発光層および電荷発生層を含んでもよい。 In the organic electroluminescence device according to the present invention, the organic layer further includes a Group 1 metal, a Group 2 metal, a transition metal of the fourth period, a transition metal of the fifth period, a lanthanide, and an organic metal of a d-transition element of the periodic table, Alternatively, at least one metal selected from the group consisting of at least one complex compound containing the metal may be included. The organic layer may include a light emitting layer and a charge generation layer.
さらに、有機エレクトロルミネッセンス素子は、本発明に係る有機エレクトロルミネッセンス化合物以外に、青色エレクトロルミネッセンス化合物、赤色エレクトロルミネッセンス化合物または緑色エレクトロルミネッセンス化合物を含む少なくとも1つの発光層をさらに含むことにより、白色光を発光できる。 Furthermore, the organic electroluminescent element emits white light by further including at least one light emitting layer containing a blue electroluminescent compound, a red electroluminescent compound or a green electroluminescent compound in addition to the organic electroluminescent compound according to the present invention. it can.
好ましくは、本発明に係る有機エレクトロルミネッセンス素子において、カルコゲニド層、金属ハロゲン化物層および金属酸化物層から選択される少なくとも1つの層(本明細書以下、「表面層」)が、1つまたは両方の電極(複数も含む)の内面(複数も含む)に配置されてもよい。特に、ケイ素またはアルミニウムのカルコゲニド(酸化物を含む)層が、エレクトロルミネッセンス媒体層のアノード面に配置され、金属ハロゲン化物層または金属酸化物層が、エレクトロルミネッセンス媒体層のカソード面に配置されることが好ましい。このような表面層は有機エレクトロルミネッセンス素子のための作動安定性を提供する。好ましくは、前記カルコゲニドは、SiOX(1≦X≦2)、AlOX(1≦X≦1.5)、SiON、SiAlONなどを含み、前記金属ハロゲン化物は、LiF、MgF2、CaF2、希土類金属フッ化物などを含み、前記金属酸化物は、Cs2O、Li2O、MgO、SrO、BaO、CaOなどを含む。 Preferably, in the organic electroluminescence device according to the present invention, at least one layer selected from a chalcogenide layer, a metal halide layer, and a metal oxide layer (hereinafter referred to as “surface layer”) is one or both. May be disposed on the inner surface (including the plurality) of the electrode (including the plurality). In particular, a silicon or aluminum chalcogenide (including oxide) layer is disposed on the anode surface of the electroluminescent medium layer, and a metal halide layer or metal oxide layer is disposed on the cathode surface of the electroluminescent medium layer. Is preferred. Such a surface layer provides operational stability for the organic electroluminescent device. Preferably, the chalcogenide includes SiO X (1 ≦ X ≦ 2), AlO X (1 ≦ X ≦ 1.5), SiON, SiAlON, etc., and the metal halide includes LiF, MgF 2 , CaF 2 , The rare earth metal fluoride is included, and the metal oxide includes Cs 2 O, Li 2 O, MgO, SrO, BaO, CaO and the like.
好ましくは、本発明に係る有機エレクトロルミネッセンス素子において、電子輸送化合物および還元ドーパントの混合領域、あるいはホール輸送化合物および酸化ドーパントの混合領域は、一対の電極の少なくとも1つの表面に配置されてもよい。この場合、電子輸送化合物はアニオンに還元されるので、それは、混合領域からエレクトロルミネッセンス媒体まで電子を注入し、輸送することが容易になる。さらに、ホール輸送化合物はカチオンに酸化されるので、それは、混合領域からエレクトロルミネッセンス媒体までホールを注入し、輸送することが容易になる。好ましくは、酸化ドーパントは種々のルイス酸およびアクセプター化合物を含み、還元ドーパントはアルカリ金属、アルカリ金属化合物、アルカリ土類金属、希土類金属、およびそれらの混合物を含む。還元ドーパント層は、2つ以上のエレクトロルミネッセンス層を有し、白色光を発光するエレクトロルミネッセンス素子を作製するために電荷発生層として利用されてもよい。 Preferably, in the organic electroluminescence device according to the present invention, the mixed region of the electron transport compound and the reducing dopant or the mixed region of the hole transport compound and the oxidizing dopant may be disposed on at least one surface of the pair of electrodes. In this case, since the electron transport compound is reduced to an anion, it becomes easier to inject and transport electrons from the mixed region to the electroluminescent medium. Furthermore, since the hole transport compound is oxidized to cations, it becomes easier to inject and transport holes from the mixed region to the electroluminescent medium. Preferably, the oxidizing dopant includes various Lewis acids and acceptor compounds, and the reducing dopant includes alkali metals, alkali metal compounds, alkaline earth metals, rare earth metals, and mixtures thereof. The reducing dopant layer has two or more electroluminescent layers, and may be used as a charge generation layer to produce an electroluminescent device that emits white light.
本明細書以下に、有機エレクトロルミネッセンス化合物、その化合物の調製方法、および本発明の化合物を含む素子の発光特性を、以下の実施例を参照して詳細に説明する。 Hereinafter, the organic electroluminescent compound, the method for preparing the compound, and the light emission characteristics of the device containing the compound of the present invention will be described in detail with reference to the following examples.
実施例1:化合物C−35の調製Example 1: Preparation of compound C-35
化合物1−2の調製
MeCN(50mL)中に化合物1−1(50g、247.2mmol)を溶解した後、N−ブロモスクシンイミド(NBS)(44g、247.2mmol)を加え、反応混合物を室温にて1日間撹拌した。反応が完了した後、反応混合物を酢酸エチル(EA)で抽出し、有機層を濃縮し、シリカカラムにより精製して化合物1−2(55.6g、80%)を得た。
Preparation of Compound 1-2 After dissolving Compound 1-1 (50 g, 247.2 mmol) in MeCN (50 mL), N-bromosuccinimide (NBS) (44 g, 247.2 mmol) was added and the reaction mixture was brought to room temperature. And stirred for 1 day. After the reaction was completed, the reaction mixture was extracted with ethyl acetate (EA), the organic layer was concentrated and purified by silica column to give compound 1-2 (55.6 g, 80%).
化合物1−3の調製
テトラヒドロフラン(THF)(250mL)中に化合物1−2(7.7g、27.5mmol)を溶解した後、反応混合物を−78℃に冷却した。ヘキサン(17.6mL、44mmol)中の2.5Mのn−BuLiを反応混合物に加え、その反応混合物を1時間撹拌した。B(Oi−Pr)3(12.6mL、55mmol)を同じ温度でゆっくり加え、反応混合物を2時間撹拌した。撹拌後、反応混合物を2MのHClを加えてクエンチし、蒸留水およびEAで抽出し、有機層を濃縮した。有機層を塩化メチレン(MC)およびヘキサンで再結晶化して化合物1−3(4.0g、60%)を得た。
Preparation of Compound 1-3 After dissolving Compound 1-2 (7.7 g, 27.5 mmol) in tetrahydrofuran (THF) (250 mL), the reaction mixture was cooled to −78 ° C. 2.5M n-BuLi in hexane (17.6 mL, 44 mmol) was added to the reaction mixture and the reaction mixture was stirred for 1 hour. B (Oi-Pr) 3 (12.6 mL, 55 mmol) was added slowly at the same temperature and the reaction mixture was stirred for 2 h. After stirring, the reaction mixture was quenched by the addition of 2M HCl, extracted with distilled water and EA, and the organic layer was concentrated. The organic layer was recrystallized with methylene chloride (MC) and hexane to obtain compound 1-3 (4.0 g, 60%).
化合物1−4の調製
トルエン(110mL)および精製水(27mL)中に化合物1−3(4.5g、18.3mol)、4−ブロモヨードベンゼン(6.73g、23.8mol)、Pd(PPh3)4(634mg、0.55mmol)およびNa2CO3(5.8g、54.9mol)を入れた後、反応混合物を75℃にて3時間撹拌した。反応が完了した後、水層を除去し、有機層を濃縮し、シリカカラムにより精製して化合物1−4(3.9g、60%)を得た。
Preparation of Compound 1-4 Compound 1-3 (4.5 g, 18.3 mol), 4-bromoiodobenzene (6.73 g, 23.8 mol), Pd (PPh) in toluene (110 mL) and purified water (27 mL). 3 ) 4 (634 mg, 0.55 mmol) and Na 2 CO 3 (5.8 g, 54.9 mol) were added and the reaction mixture was stirred at 75 ° C. for 3 hours. After the reaction was completed, the aqueous layer was removed, the organic layer was concentrated, and purified by silica column to give compound 1-4 (3.9 g, 60%).
化合物1−7の調製
トルエン(200mL)、エタノール(50mL)および精製水(50mL)中に化合物1−5(14g、48.76mmol)、化合物1−6(10g、40.63mmol)、K2CO3(13.5g、97.52mmol)およびPd(PPh3)4(2.35g、2.03mmol)を入れた後、反応混合物を95℃にて3時間撹拌した。反応が完了した後、反応混合物を室温に冷却した。水層を除去し、有機層を濃縮し、MCで粉砕し、濾過して化合物1−7(12g、72%)を得た。
Preparation of Compound 1-7 Compound 1-5 (14 g, 48.76 mmol), Compound 1-6 (10 g, 40.63 mmol), K 2 CO in toluene (200 mL), ethanol (50 mL) and purified water (50 mL). After 3 (13.5 g, 97.52 mmol) and Pd (PPh 3 ) 4 (2.35 g, 2.03 mmol) were added, the reaction mixture was stirred at 95 ° C. for 3 hours. After the reaction was complete, the reaction mixture was cooled to room temperature. The aqueous layer was removed, the organic layer was concentrated, triturated with MC, and filtered to give compound 1-7 (12 g, 72%).
化合物C−35の調製
トルエン(50mL)中に化合物1−4(3.3g、9.2mmol)、化合物1−7(3.4g、8.4mmol)、Cs2CO3(8.2g、25.2mmol)、CuI(880mg、4.62mmol)およびエチレンジアミン(EDA)(0.6mL、8.4mmol)を入れた後、反応混合物を還流下で1日間撹拌した。反応混合物をEAで抽出し、減圧下で蒸留し、カラム(MCおよびヘキサン)により濾過して化合物C−35(1.7g、29.8%)を得た。
MS/FAB実測値684.82;計算値684.26
Preparation of Compound C-35 Compound 1-4 (3.3 g, 9.2 mmol), Compound 1-7 (3.4 g, 8.4 mmol), Cs 2 CO 3 (8.2 g, 25) in toluene (50 mL). 0.2 mmol), CuI (880 mg, 4.62 mmol) and ethylenediamine (EDA) (0.6 mL, 8.4 mmol) were added and the reaction mixture was stirred at reflux for 1 day. The reaction mixture was extracted with EA, distilled under reduced pressure, and filtered through a column (MC and hexane) to give compound C-35 (1.7 g, 29.8%).
MS / FAB found 684.82; calculated 684.26
実施例2:化合物C−56の調製Example 2: Preparation of compound C-56
化合物2−1の調製
トルエン(244mL)および精製水(60mL)中に化合物1−3(10g、40.6mol)、4,4’−ジブロモビフェニル(38g、121.9mol)、Pd(PPh3)4(2.3g、2.03mmol)およびNa2CO3(12.9g、121.9mol)を入れた後、反応混合物を75℃にて3時間撹拌した。反応が完了した後、水層を除去し、有機層を濃縮し、シリカカラムにより精製して化合物2−1(9.5g、54%)を得た。
Preparation of Compound 2-1 Compound 1-3 (10 g, 40.6 mol), 4,4′-dibromobiphenyl (38 g, 121.9 mol), Pd (PPh 3 ) in toluene (244 mL) and purified water (60 mL) 4 (2.3 g, 2.03 mmol) and Na 2 CO 3 (12.9 g, 121.9 mol) were added and the reaction mixture was stirred at 75 ° C. for 3 hours. After the reaction was completed, the aqueous layer was removed, the organic layer was concentrated, and purified by silica column to give compound 2-1 (9.5 g, 54%).
化合物C−42の調製
トルエン(50mL)中に化合物2−1(5.0g、11.5mmol)、化合物1−7(4.7g、11.5mmol)、Pd(OAc)2(129mg、0.575mmol)、50%P(t−Bu)3(0.54mL、2.3mmol)およびCs2CO3(11.2g、34.5mmol)を入れた後、反応混合物を還流下で1日間撹拌した。反応混合物をEAで抽出し、減圧下で蒸留し、カラム(MCおよびヘキサン)により濾過して化合物C−42(3.5g、40%)を得た。
MS/FAB実測値760.92;計算値760.29
Preparation of Compound C-42 Compound 2-1 (5.0 g, 11.5 mmol), Compound 1-7 (4.7 g, 11.5 mmol), Pd (OAc) 2 (129 mg, 0.8 mL) in toluene (50 mL). 575 mmol), 50% P (t-Bu) 3 (0.54 mL, 2.3 mmol) and Cs 2 CO 3 (11.2 g, 34.5 mmol), then the reaction mixture was stirred at reflux for 1 day. . The reaction mixture was extracted with EA, distilled under reduced pressure, and filtered through a column (MC and hexane) to give compound C-42 (3.5 g, 40%).
MS / FAB measured value 760.92; calculated value 760.29
素子実施例1:本発明に係る化合物を使用したOLED素子の製造
本発明に係る化合物を使用してOLED素子を製造した。有機発光ダイオード(OLED)素子(Samsung Corning、Republic of Korea)のためのガラス基板上の透明電極インジウムスズ酸化物(ITO)薄膜(15Ω/sq)を、トリクロロエチレン、アセトン、エタノールおよび蒸留水で連続して超音波洗浄に供し、次いでイソプロパノール中に保存した。次いで、ITO基板を真空蒸着装置の基板ホルダに取り付けた。N1,N1’−([1,1’−ビフェニル]−4,4’−ジイル)ビス(N1−(ナフタレン−1−イル)−N4,N4−ジフェニルベンゼン−1,4−ジアミン)を前記真空蒸着装置のセルに導入し、次いで前記装置のチャンバ内の圧力を10−6torrに制御した。その後、上記の導入した材料を蒸発させるために電流をセルに印加し、それにより、ITO基板上に60nmの厚さを有するホール注入層を形成した。次いで、N,N’−ジ(4−ビフェニル)−N,N’−ジ(4−ビフェニル)−4,4’−ジアミノビフェニルを前記真空蒸着装置の別のセルに導入し、電流をセルに印加することにより蒸発させ、それによりホール注入層上に20nmの厚さを有するホール輸送層を形成させた。その後、化合物C−42をホスト材料として真空蒸着装置の1つのセル内に導入し、化合物D−7をドーパントとして別のセル内に導入した。2つの材料を異なる速度で蒸発させ、ホストおよびドーパントの総量に対して4wt%のドーパントのドーピング量で蒸着させて、ホール輸送層上に30nmの厚さを有する発光層を形成させた。次いで、2−(4−(9,10−ジ(ナフタレン−2−イル)アントラセン−2−イル)フェニル)−1−フェニル−1H−ベンゾ[d]イミダゾールを1つのセル内に導入し、リチウムキノレートを別のセル内に導入した。2つの材料を同じ速度で蒸発させ、それぞれ50wt%のドーピング量で蒸着させて発光層上に30nmの厚さを有する電子輸送層を形成させた。次いで、電子輸送層上に2nmの厚さを有する電子注入層としてリチウムキノレートを蒸着させた後、150nmの厚さを有するAlカソードを電子注入層上の別の真空蒸着装置により蒸着させた。このように、OLED素子を製造した。OLED素子を製造するために使用した全ての材料を、使用前に10−6torrにて真空昇華により精製した。
Element Example 1 Production of OLED Element Using Compound According to the Present Invention An OLED element was produced using the compound according to the present invention. A transparent electrode indium tin oxide (ITO) thin film (15Ω / sq) on a glass substrate for an organic light emitting diode (OLED) device (Samsung Corning, Public of Korea) was continuously formed with trichlorethylene, acetone, ethanol and distilled water. And then subjected to ultrasonic cleaning and then stored in isopropanol. Next, the ITO substrate was attached to the substrate holder of the vacuum evaporation apparatus. N 1, N 1 '- ( [1,1'- biphenyl] -4,4'-diyl) bis (N 1 - (naphthalen-1-yl) -N 4, N 4 - diphenyl-1,4 Diamine) was introduced into the cell of the vacuum deposition apparatus and then the pressure in the chamber of the apparatus was controlled to 10 −6 torr. Thereafter, a current was applied to the cell to evaporate the introduced material, thereby forming a hole injection layer having a thickness of 60 nm on the ITO substrate. Next, N, N′-di (4-biphenyl) -N, N′-di (4-biphenyl) -4,4′-diaminobiphenyl is introduced into another cell of the vacuum deposition apparatus, and current is supplied to the cell. Evaporation was performed by applying, thereby forming a hole transport layer having a thickness of 20 nm on the hole injection layer. Thereafter, compound C-42 was introduced as a host material into one cell of the vacuum deposition apparatus, and compound D-7 was introduced as a dopant into another cell. The two materials were evaporated at different rates and deposited with a doping amount of 4 wt% dopant relative to the total amount of host and dopant to form a light emitting layer having a thickness of 30 nm on the hole transport layer. Then, 2- (4- (9,10-di (naphthalen-2-yl) anthracen-2-yl) phenyl) -1-phenyl-1H-benzo [d] imidazole was introduced into one cell and lithium The quinolate was introduced into another cell. The two materials were evaporated at the same rate, and each was deposited with a doping amount of 50 wt% to form an electron transport layer having a thickness of 30 nm on the light emitting layer. Subsequently, lithium quinolate was deposited as an electron injection layer having a thickness of 2 nm on the electron transport layer, and then an Al cathode having a thickness of 150 nm was deposited by another vacuum deposition apparatus on the electron injection layer. Thus, the OLED element was manufactured. All materials used to manufacture OLED devices were purified by vacuum sublimation at 10-6 torr before use.
製造したOLED素子は、3.9Vの駆動電圧で1,060cd/m2の輝度および7.7mA/cm2の電流密度を有する赤色の発光を示した。さらに、5,000nitの輝度にて90%の輝度まで減少するのにかかる時間は少なくとも130時間であった。 The manufactured OLED element showed red emission having a luminance of 1,060 cd / m 2 and a current density of 7.7 mA / cm 2 at a driving voltage of 3.9V. Furthermore, the time taken to decrease to 90% brightness at a brightness of 5,000 nits was at least 130 hours.
素子実施例2:本発明に係る化合物を使用したOLED素子の製造
ホスト材料として化合物C−35、およびドーパントとして化合物D−7を使用することを除いて、素子実施例1と同じ方法でOLED素子を製造した。
Device Example 2: Production of an OLED device using a compound according to the present invention OLED device in the same manner as Device Example 1 except that Compound C-35 is used as the host material and Compound D-7 is used as the dopant. Manufactured.
製造したOLED素子は、3.8Vの駆動電圧で1,020cd/m2の輝度および7.5mA/cm2の電流密度を有する赤色発光を示した。さらに、5,000nitの輝度にて90%の輝度まで減少するのにかかる時間は少なくとも130時間であった。 The manufactured OLED element showed red emission having a luminance of 1,020 cd / m 2 and a current density of 7.5 mA / cm 2 at a driving voltage of 3.8V. Furthermore, the time taken to decrease to 90% brightness at a brightness of 5,000 nits was at least 130 hours.
比較例1:従来のエレクトロルミネッセンス化合物を使用したOLED素子の製造
ホスト材料として4,4’−N,N’−ジカルバゾール−ビフェニルを使用し、ドーパントとして化合物D−11を使用して発光層を蒸着させたこと、ならびにアルミニウム(III)ビス(2−メチル−8−キノリナト)−4−フェニルフェノレートを使用することにより発光層と電子輸送層との間に10nmの厚さを有するホール遮断層を蒸着させたことを除いて、素子実施例1と同じ方法でOLED素子を製造した。
Comparative Example 1: Production of OLED Device Using Conventional Electroluminescence Compound 4,4′-N, N′-Dicarbazole-biphenyl is used as a host material, and a light emitting layer is formed using Compound D-11 as a dopant. A hole blocking layer having a thickness of 10 nm between the emissive layer and the electron transport layer by vapor deposition and using aluminum (III) bis (2-methyl-8-quinolinato) -4-phenylphenolate An OLED device was manufactured in the same manner as in device example 1 except that was vapor-deposited.
製造したOLED素子は、8.2Vの駆動電圧で1,000cd/m2の輝度および20.4mA/cm2の電流密度を有する赤色の発光を示した。さらに、5,000nitの輝度にて90%の輝度まで減少するのにかかる時間は少なくとも10時間であった。 The manufactured OLED element showed red emission having a luminance of 1,000 cd / m 2 and a current density of 20.4 mA / cm 2 at a driving voltage of 8.2V. Furthermore, it took at least 10 hours to decrease to 90% luminance at a luminance of 5,000 nit.
本発明の有機エレクトロルミネッセンス化合物は従来の材料より優れた発光特性を有する。さらに、発光ホスト材料として本発明に係る化合物を使用した素子は、駆動電圧を減少させることにより電力効率を増加させ、優れた発光効率および寿命特性を有する。
The organic electroluminescent compound of the present invention has light emission characteristics superior to those of conventional materials. Furthermore, the device using the compound according to the present invention as the light emitting host material increases the power efficiency by reducing the driving voltage, and has excellent light emission efficiency and lifetime characteristics.
Claims (6)
Zは、
L1は、単結合、置換もしくは非置換3〜30員ヘテロアリーレン基、または置換もしくは非置換(C6−C30)アリーレン基を表し、
Xは、−O−、−S−、−CR11R12−または−NR13−を表し、
R11〜R13は各々独立して、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、または置換もしくは非置換3〜30員ヘテロアリール基を表し、
R1〜R6は各々独立して、水素、重水素、ハロゲン、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、置換もしくは非置換3〜30員ヘテロアリール基、置換もしくは非置換(C3−C30)シクロアルキル基、置換もしくは非置換5〜7員ヘテロシクロアルキル基、置換もしくは非置換(C6−C30)アリール(C1−C30)アルキル基、少なくとも1つの(C3−C30)シクロアルキルと縮合した置換もしくは非置換(C6−C30)アリール基、少なくとも1つの置換もしくは非置換芳香環と縮合した5〜7員ヘテロシクロアルキル基、少なくとも1つの置換もしくは非置換芳香環と縮合した(C3−C30)シクロアルキル基、−NR14R15、−SiR16R17R18、−SR19、−OR20、(C2−C30)アルケニル基、(C2−C30)アルキニル基、シアノ基、またはニトロ基を表し、
R14〜R20は各々独立して、水素、重水素、ハロゲン、置換もしくは非置換(C1−C30)アルキル基、置換もしくは非置換(C6−C30)アリール基、置換もしくは非置換3〜30員ヘテロアリール基を表し、あるいは隣接する置換基(複数も含む)に結合して単環または多環、(C5−C30)脂環式環または芳香環を形成し、その炭素原子(複数も含む)は、窒素、酸素および硫黄から選択される少なくとも1つのヘテロ原子で置換されてもよく、
a、dおよびeの各々は独立して、1〜4の整数を表し、a、dまたはeが2以上の整数である場合、R1の各々、R4の各々およびR5の各々は、同じまたは異なり、
bおよびfの各々は独立して、1〜3の整数を表し、bまたはfが2以上の整数である場合、R2の各々およびR6の各々は、同じまたは異なり、
cは、1〜5の整数を表し、cが2以上の整数である場合、R3の各々は、同じまたは異なり、
mは、1、2または3を表し、
ヘテロシクロアルキル基およびヘテロアリール(アリーレン)基は、B、N、O、S、P(=O)、SiおよびPから選択される少なくとも1つのヘテロ原子を含む)
により表される有機エレクトロルミネッセンス化合物。 The following formula 1:
Z is
L 1 represents a single bond, a substituted or unsubstituted 3 to 30-membered heteroarylene group, or a substituted or unsubstituted (C6-C30) arylene group,
X represents —O—, —S—, —CR 11 R 12 — or —NR 13 —;
R 11 to R 13 each independently represents a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, or a substituted or unsubstituted 3 to 30 membered heteroaryl group;
R 1 to R 6 are each independently hydrogen, deuterium, halogen, substituted or unsubstituted (C1-C30) alkyl group, substituted or unsubstituted (C6-C30) aryl group, substituted or unsubstituted 3 to 30 members. A heteroaryl group, a substituted or unsubstituted (C3-C30) cycloalkyl group, a substituted or unsubstituted 5- to 7-membered heterocycloalkyl group, a substituted or unsubstituted (C6-C30) aryl (C1-C30) alkyl group, at least 1 A substituted or unsubstituted (C6-C30) aryl group fused with one (C3-C30) cycloalkyl, a 5-7 membered heterocycloalkyl group fused with at least one substituted or unsubstituted aromatic ring, at least one substituted or unsubstituted engaged substituted aromatic ring condensed (C3-C30) cycloalkyl group, -NR 14 R 15, -SiR 16 R 17 R 18 , —SR 19 , —OR 20 , (C 2 -C 30) alkenyl group, (C 2 -C 30) alkynyl group, cyano group, or nitro group,
R 14 to R 20 are each independently hydrogen, deuterium, halogen, substituted or unsubstituted (C1-C30) alkyl group, substituted or unsubstituted (C6-C30) aryl group, substituted or unsubstituted 3 to 30 members. Represents a heteroaryl group, or is bonded to an adjacent substituent (s) to form a monocyclic or polycyclic, (C5-C30) alicyclic or aromatic ring, and its carbon atom (s) May be substituted with at least one heteroatom selected from nitrogen, oxygen and sulfur;
each of a, d and e independently represents an integer of 1 to 4, and when a, d or e is an integer of 2 or more, each of R 1 , each of R 4 and each of R 5 is Same or different,
each of b and f independently represents an integer of 1 to 3, and when b or f is an integer of 2 or more, each of R 2 and each of R 6 are the same or different;
c represents an integer of 1 to 5, and when c is an integer of 2 or more, each R 3 is the same or different;
m represents 1, 2 or 3;
Heterocycloalkyl and heteroaryl (arylene) groups contain at least one heteroatom selected from B, N, O, S, P (═O), Si and P)
An organic electroluminescent compound represented by:
Xは、−O−、−S−、−CR11R12−または−NR13−を表し、
R11〜R13は各々独立して、(C1−C30)アルキル基、(C6−C30)アリール基、または3〜30員ヘテロアリール基を表し、
R1〜R6は各々独立して、水素、重水素、ハロゲン、(C1−C30)アルキル基、(C6−C30)アリール基、3〜30員ヘテロアリール基またはカルバゾリル基を表し、
mは、1または2を表し、
L1におけるヘテロアリーレンおよびアリーレン基、R1〜R6およびR11〜R13におけるアルキル、アリール、ヘテロアリールおよびカルバゾリル基は、重水素、ハロゲン、ハロゲンで置換されたもしくは置換されていない(C1−C30)アルキル基、(C6−C30)アリール基、3〜30員ヘテロアリール基、トリ(C1−C30)アルキルシリル基、トリ(C6−C30)アリールシリル基、ジ(C1−C30)アルキル(C6−C30)アリールシリル基、(C1−C30)アルキルジ(C6−C30)アリールシリル基、カルバゾリル基、ベンゾカルバゾリル基およびジベンゾカルバゾリル基からなる群から選択される少なくとも1つで置換されてもよい、
請求項1に記載の化合物。 L 1 represents a single bond, a 3-30 membered heteroarylene group or a (C6-C30) arylene group,
X represents —O—, —S—, —CR 11 R 12 — or —NR 13 —;
R 11 to R 13 each independently represents a (C1-C30) alkyl group, a (C6-C30) aryl group, or a 3-30 membered heteroaryl group,
R 1 to R 6 each independently represent hydrogen, deuterium, halogen, a (C1-C30) alkyl group, a (C6-C30) aryl group, a 3-30 membered heteroaryl group or a carbazolyl group,
m represents 1 or 2,
Heteroarylene and arylene groups in L 1, alkyl, aryl, heteroaryl and carbazolyl groups in R 1 to R 6 and R 11 to R 13 are substituted or unsubstituted with deuterium, halogen, halogen (C1- C30) alkyl group, (C6-C30) aryl group, 3-30 membered heteroaryl group, tri (C1-C30) alkylsilyl group, tri (C6-C30) arylsilyl group, di (C1-C30) alkyl (C6) -C30) substituted with at least one selected from the group consisting of arylsilyl group, (C1-C30) alkyldi (C6-C30) arylsilyl group, carbazolyl group, benzocarbazolyl group and dibenzocarbazolyl group Good,
The compound of claim 1.
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