WO2019009052A1 - 多環芳香族化合物 - Google Patents
多環芳香族化合物 Download PDFInfo
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- WO2019009052A1 WO2019009052A1 PCT/JP2018/023072 JP2018023072W WO2019009052A1 WO 2019009052 A1 WO2019009052 A1 WO 2019009052A1 JP 2018023072 W JP2018023072 W JP 2018023072W WO 2019009052 A1 WO2019009052 A1 WO 2019009052A1
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- Prior art keywords
- formula
- ring
- aryl
- alkyl
- substituted
- Prior art date
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- -1 Polycyclic aromatic compound Chemical class 0.000 title claims abstract description 356
- 125000003118 aryl group Chemical group 0.000 claims abstract description 277
- 239000000463 material Substances 0.000 claims abstract description 139
- 150000001875 compounds Chemical group 0.000 claims description 333
- 125000000217 alkyl group Chemical group 0.000 claims description 230
- 125000004432 carbon atom Chemical group C* 0.000 claims description 174
- 125000001072 heteroaryl group Chemical group 0.000 claims description 137
- 229910052739 hydrogen Inorganic materials 0.000 claims description 107
- 239000001257 hydrogen Substances 0.000 claims description 107
- 238000002347 injection Methods 0.000 claims description 65
- 239000007924 injection Substances 0.000 claims description 65
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 62
- 229910052799 carbon Inorganic materials 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 35
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 31
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical group [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 25
- 229910052805 deuterium Inorganic materials 0.000 claims description 25
- 229910052736 halogen Inorganic materials 0.000 claims description 23
- 150000002367 halogens Chemical group 0.000 claims description 23
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 21
- 125000003107 substituted aryl group Chemical group 0.000 claims description 18
- 239000010409 thin film Substances 0.000 claims description 18
- 229910052783 alkali metal Inorganic materials 0.000 claims description 16
- 150000001340 alkali metals Chemical class 0.000 claims description 16
- HKMTVMBEALTRRR-UHFFFAOYSA-N Benzo[a]fluorene Chemical class C1=CC=CC2=C3CC4=CC=CC=C4C3=CC=C21 HKMTVMBEALTRRR-UHFFFAOYSA-N 0.000 claims description 14
- 125000003785 benzimidazolyl group Chemical class N1=C(NC2=C1C=CC=C2)* 0.000 claims description 13
- 150000004820 halides Chemical class 0.000 claims description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 13
- 150000002910 rare earth metals Chemical class 0.000 claims description 13
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 12
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 12
- 125000005647 linker group Chemical group 0.000 claims description 12
- UORVGPXVDQYIDP-BJUDXGSMSA-N borane Chemical group [10BH3] UORVGPXVDQYIDP-BJUDXGSMSA-N 0.000 claims description 11
- 125000003003 spiro group Chemical group 0.000 claims description 11
- 150000001454 anthracenes Chemical class 0.000 claims description 10
- 230000005669 field effect Effects 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- MPQXHAGKBWFSNV-UHFFFAOYSA-N oxidophosphanium Chemical class [PH3]=O MPQXHAGKBWFSNV-UHFFFAOYSA-N 0.000 claims description 7
- 150000003222 pyridines Chemical class 0.000 claims description 7
- LISFMEBWQUVKPJ-UHFFFAOYSA-N quinolin-2-ol Chemical compound C1=CC=C2NC(=O)C=CC2=C1 LISFMEBWQUVKPJ-UHFFFAOYSA-N 0.000 claims description 7
- 150000003918 triazines Chemical class 0.000 claims description 7
- 150000003230 pyrimidines Chemical class 0.000 claims description 6
- 150000002219 fluoranthenes Chemical class 0.000 claims description 5
- 150000005041 phenanthrolines Chemical class 0.000 claims description 4
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 claims description 3
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 2
- 229940058303 antinematodal benzimidazole derivative Drugs 0.000 claims description 2
- 150000002431 hydrogen Chemical group 0.000 claims 6
- 150000001716 carbazoles Chemical class 0.000 claims 1
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 abstract description 52
- 229910052796 boron Inorganic materials 0.000 abstract description 18
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052717 sulfur Inorganic materials 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 8
- 239000011593 sulfur Substances 0.000 abstract description 8
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical group [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052711 selenium Inorganic materials 0.000 abstract description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 245
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 189
- 230000015572 biosynthetic process Effects 0.000 description 123
- 238000003786 synthesis reaction Methods 0.000 description 122
- 239000007787 solid Substances 0.000 description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 90
- 125000001424 substituent group Chemical group 0.000 description 84
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 73
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 70
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 69
- 238000006243 chemical reaction Methods 0.000 description 64
- 229910052757 nitrogen Chemical group 0.000 description 60
- 239000000543 intermediate Substances 0.000 description 56
- 239000012044 organic layer Substances 0.000 description 56
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 54
- 239000000758 substrate Substances 0.000 description 52
- 230000032258 transport Effects 0.000 description 51
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 49
- 229910002027 silica gel Inorganic materials 0.000 description 49
- 239000000741 silica gel Substances 0.000 description 49
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 48
- 238000005401 electroluminescence Methods 0.000 description 46
- 239000000243 solution Substances 0.000 description 44
- 238000000034 method Methods 0.000 description 43
- 238000005160 1H NMR spectroscopy Methods 0.000 description 42
- 238000005481 NMR spectroscopy Methods 0.000 description 42
- 239000010408 film Substances 0.000 description 41
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 38
- 125000003545 alkoxy group Chemical group 0.000 description 34
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 34
- 125000000753 cycloalkyl group Chemical group 0.000 description 31
- 125000001624 naphthyl group Chemical group 0.000 description 30
- 239000011541 reaction mixture Substances 0.000 description 30
- 239000012299 nitrogen atmosphere Substances 0.000 description 29
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 28
- 229910052782 aluminium Inorganic materials 0.000 description 28
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 27
- 230000005525 hole transport Effects 0.000 description 27
- 239000002019 doping agent Substances 0.000 description 26
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 26
- 238000003756 stirring Methods 0.000 description 25
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 24
- 239000002994 raw material Substances 0.000 description 24
- YTZKOQUCBOVLHL-UHFFFAOYSA-N tert-butylbenzene Chemical compound CC(C)(C)C1=CC=CC=C1 YTZKOQUCBOVLHL-UHFFFAOYSA-N 0.000 description 24
- 125000000609 carbazolyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 23
- 239000003480 eluent Substances 0.000 description 23
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 23
- 239000000203 mixture Substances 0.000 description 23
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 23
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 22
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 22
- 239000000126 substance Substances 0.000 description 22
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 22
- 238000010992 reflux Methods 0.000 description 21
- 239000002904 solvent Substances 0.000 description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical group N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 238000000151 deposition Methods 0.000 description 20
- 230000008021 deposition Effects 0.000 description 20
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 20
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 19
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 18
- 125000004986 diarylamino group Chemical group 0.000 description 18
- 125000004104 aryloxy group Chemical group 0.000 description 17
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical group C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 17
- 229910000027 potassium carbonate Inorganic materials 0.000 description 17
- 239000008096 xylene Substances 0.000 description 16
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 15
- 239000012043 crude product Substances 0.000 description 15
- 239000011521 glass Substances 0.000 description 15
- 229910052744 lithium Inorganic materials 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 15
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 15
- 125000001828 phenalenyl group Chemical group C1(C=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 15
- 239000007858 starting material Substances 0.000 description 15
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 14
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 14
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 14
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 13
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 13
- SKTCDJAMAYNROS-UHFFFAOYSA-N methoxycyclopentane Chemical compound COC1CCCC1 SKTCDJAMAYNROS-UHFFFAOYSA-N 0.000 description 13
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical group C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 13
- 239000004065 semiconductor Substances 0.000 description 13
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 13
- 238000010189 synthetic method Methods 0.000 description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 12
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 125000005240 diheteroarylamino group Chemical group 0.000 description 12
- 239000000706 filtrate Substances 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 12
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 12
- 125000004429 atom Chemical group 0.000 description 11
- 239000000460 chlorine Substances 0.000 description 11
- 238000001816 cooling Methods 0.000 description 11
- 125000000623 heterocyclic group Chemical group 0.000 description 11
- 239000003921 oil Substances 0.000 description 11
- 125000005561 phenanthryl group Chemical group 0.000 description 11
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 10
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 10
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 10
- 125000005842 heteroatom Chemical group 0.000 description 10
- 125000001644 phenoxazinyl group Chemical group C1(=CC=CC=2OC3=CC=CC=C3NC12)* 0.000 description 10
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 10
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 10
- 125000005580 triphenylene group Chemical group 0.000 description 10
- 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 9
- MRWWWZLJWNIEEJ-UHFFFAOYSA-N 4,4,5,5-tetramethyl-2-propan-2-yloxy-1,3,2-dioxaborolane Chemical compound CC(C)OB1OC(C)(C)C(C)(C)O1 MRWWWZLJWNIEEJ-UHFFFAOYSA-N 0.000 description 9
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 9
- 239000002841 Lewis acid Substances 0.000 description 9
- WTLFKMLAJZPBSQ-UHFFFAOYSA-N O1C2=C3B(C4=C(OC3=CC=C2)C=CC=C4)C2=CC=C(C=C12)Cl Chemical compound O1C2=C3B(C4=C(OC3=CC=C2)C=CC=C4)C2=CC=C(C=C12)Cl WTLFKMLAJZPBSQ-UHFFFAOYSA-N 0.000 description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 9
- 150000001412 amines Chemical class 0.000 description 9
- 125000005577 anthracene group Chemical group 0.000 description 9
- 229910052792 caesium Inorganic materials 0.000 description 9
- 150000004775 coumarins Chemical class 0.000 description 9
- 238000001914 filtration Methods 0.000 description 9
- 150000007517 lewis acids Chemical class 0.000 description 9
- 239000011777 magnesium Substances 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 9
- 125000004076 pyridyl group Chemical group 0.000 description 9
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 9
- LDFCHUHQZQRSHF-UHFFFAOYSA-N 9-(4-bromophenyl)-10-phenylanthracene Chemical compound C1=CC(Br)=CC=C1C(C1=CC=CC=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 LDFCHUHQZQRSHF-UHFFFAOYSA-N 0.000 description 8
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 8
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 8
- 125000000641 acridinyl group Chemical group C1(=CC=CC2=NC3=CC=CC=C3C=C12)* 0.000 description 8
- 125000000732 arylene group Chemical group 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical compound C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 125000001041 indolyl group Chemical group 0.000 description 8
- 125000001484 phenothiazinyl group Chemical group C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 8
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 8
- 125000001725 pyrenyl group Chemical group 0.000 description 8
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 8
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 8
- 239000001632 sodium acetate Substances 0.000 description 8
- 235000017281 sodium acetate Nutrition 0.000 description 8
- 125000001544 thienyl group Chemical group 0.000 description 8
- 125000001425 triazolyl group Chemical group 0.000 description 8
- RVPCPPWNSMAZKR-UHFFFAOYSA-N (10-phenylanthracen-9-yl)boronic acid Chemical compound C12=CC=CC=C2C(B(O)O)=C2C=CC=CC2=C1C1=CC=CC=C1 RVPCPPWNSMAZKR-UHFFFAOYSA-N 0.000 description 7
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical group C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 239000007983 Tris buffer Substances 0.000 description 7
- 238000009835 boiling Methods 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical class C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 7
- 125000002883 imidazolyl group Chemical group 0.000 description 7
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 7
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 7
- 229910052749 magnesium Inorganic materials 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 7
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 7
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 7
- 125000002971 oxazolyl group Chemical group 0.000 description 7
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 7
- 125000000168 pyrrolyl group Chemical group 0.000 description 7
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- 125000003960 triphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C3=CC=CC=C3C12)* 0.000 description 7
- 238000007740 vapor deposition Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 6
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Chemical compound C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 6
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 6
- NANUBXRTTQXXDS-UHFFFAOYSA-N 9-bromo-10-(2-phenylphenyl)anthracene Chemical compound C12=CC=CC=C2C(Br)=C2C=CC=CC2=C1C1=CC=CC=C1C1=CC=CC=C1 NANUBXRTTQXXDS-UHFFFAOYSA-N 0.000 description 6
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
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- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/322—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising boron
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- C07—ORGANIC CHEMISTRY
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- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
- C07F5/027—Organoboranes and organoborohydrides
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0803—Compounds with Si-C or Si-Si linkages
- C07F7/081—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
- C07F7/0812—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
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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
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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Definitions
- the present invention relates to a polycyclic aromatic compound, an organic electroluminescent device using the same, an organic device such as an organic field effect transistor and an organic thin film solar cell, and a display device and a lighting device.
- organic electroluminescent element made of an organic material is lightweight It has been actively studied because it is easy to In particular, with regard to the development of organic materials having emission characteristics such as blue, which is one of the three primary colors of light, and the combination of multiple materials for achieving optimum emission characteristics, regardless of polymer compounds or low molecular compounds, It has been studied.
- the organic EL element has a structure comprising a pair of electrodes comprising an anode and a cathode, and one or more layers disposed between the pair of electrodes and containing an organic compound.
- Layers containing an organic compound include a light emitting layer, and a charge transport / injection layer that transports or injects a charge such as a hole or an electron, and various organic materials suitable for these layers have been developed.
- benzofluorene compounds and the like As materials for light emitting layers, for example, benzofluorene compounds and the like have been developed (WO 2004/061047).
- a hole transport material for example, triphenylamine compounds and the like have been developed (Japanese Patent Laid-Open No. 2001-172232).
- an electron transport material for example, an anthracene compound and the like have been developed (Japanese Patent Laid-Open No. 2005-170911).
- Item 1 The polycyclic aromatic compound represented by following General formula (1).
- X 1 and X 2 are each independently>O,> S or> Se
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 and R 11 are each independently substituted with hydrogen, alkyl or alkyl
- adjacent groups of R 1 to R 11 may combine to form an aryl ring together with the a ring, b ring or c ring, and at least one of the formed aryl rings is Hydrogen may be substituted by alkyl
- At least one of R 1 to R 11 is each independently represented by the following formula (Z-1), formula (Z-2), formula (Z-3), formula (Z-4), or formula (Z) -5) or a group represented by formula (Z-6)
- Groups represented by the above formulas (Z-1) to (Z-6) are bonded to the compounds represented by the above formula (1) in * in each formula, Ar in each of the above
- X 1 and X 2 are each independently>O,> S or> Se
- R 1 to R 11 are each independently hydrogen, alkyl having 1 to 12 carbons, or aryl having 6 to 24 carbons which may be substituted with alkyl having 1 to 12 carbons
- R 1 to Adjacent groups of R 11 may combine to form an aryl ring having a carbon number of 10 to 20 together with the a ring, b ring or c ring, and at least one hydrogen in the formed aryl ring is carbon It may be substituted by the alkyl of the number 1-12
- One or two of R 1 to R 11 are each independently the above-mentioned formula (Z-1), formula (Z-2), formula (Z-3), formula (Z-4), formula A group represented by (Z-5) or formula (Z-6), Ar in the above formulas (Z-1) to (Z-6) is independently at least one of the above formulas (Ar-1), (Ar-2), (Ar-3), and (Ar-).
- X is each independently hydrogen, alkyl having 1 to 4 carbon atoms, or carbon number which may be substituted with alkyl having 1 to 4 carbon atoms 6 to 18 aryl or C 4 to C 16 heteroaryl optionally substituted with alkyl having 1 to 4 carbon atoms, and A 1 and A 2 are both hydrogen or are bonded to each other May form a spiro ring, and “—Xn” in the formula (Ar-1) and the formula (Ar-2) indicates that n Xs independently bind to any position, n is an integer of 1 to 4 and At least one hydrogen in the compound represented by the above formula (1) may be substituted with deuterium.
- R 1 - R 11 are each independently hydrogen, alkyl having 1 to 6 carbon atoms or an alkyl aryl of 6-18 carbon atoms which may be substituted having 1 to 6 carbon atoms,
- R 1 - Adjacent groups of R 11 may combine to form an aryl ring having a carbon number of 10 to 18 together with the a ring, b ring or c ring, and at least one hydrogen in the formed aryl ring is carbon It may be substituted with alkyl of 1 to 6,
- One or two of R 1 to R 11 are each independently the above-mentioned formula (Z-1), formula (Z-2), formula (Z-3), formula (Z-4), formula A group represented by (Z-5) or formula (Z-6),
- Ar in the above formulas (Z-1) to (Z-6) is independently at least one of the following formulas (Ar-1-1), (Ar-1-2), and (Ar-2-1).
- X is each independently hydrogen, alkyl having 1 to 4 carbon atoms, or aryl having 6 to 10 carbon atoms
- a 1 and A 2 may both be hydrogen or may be combined with each other to form a spiro ring
- a group represented by formula (Ar-1-1), a formula (Ar-1-2), a formula (Ar-2-1) “, —Xn” in formula (Ar-2-2) and formula (Ar-2-3) represents that n Xs independently bind to any position, and n is 1 or 2 is,
- Item 4. The polycyclic aromatic compound described in item 1 which is represented by any one of the following formulas:
- Item 5 A material for an organic device, comprising the polycyclic aromatic compound according to any one of Items 1 to 4.
- Item 6 The material for an organic device according to Item 5, wherein the material for an organic device is a material for an organic electroluminescent device, a material for an organic field effect transistor, or a material for an organic thin film solar cell.
- Item 7. A material for an organic electroluminescent device according to item 6, which is a material for a light emitting layer.
- Item 7 further contains at least one of a polycyclic aromatic compound represented by the following General Formula (2) and a multimer of a polycyclic aromatic compound having a plurality of structures represented by the following General Formula (2), The material for the light emitting layer described in 4.
- Ring A, ring B and ring C are each independently an aryl ring or a heteroaryl ring, and at least one hydrogen in these rings may be substituted.
- X 1 and X 2 are each independently> O or> N—R, and R in the aforementioned> N—R is optionally substituted aryl, optionally substituted heteroaryl or alkyl, and And R in said NR may be bonded to said A ring, B ring and / or C ring by a linking group or a single bond, and At least one hydrogen in the compound or structure represented by Formula (2) may be substituted with halogen, cyano or deuterium.
- Item 9 An organic electroluminescent device comprising: a pair of electrodes consisting of an anode and a cathode; and a light emitting layer disposed between the pair of electrodes and containing the material for a light emitting layer described in item 7 or 8.
- Item 10 Furthermore, it has an electron transport layer and / or an electron injection layer disposed between the cathode and the light emitting layer, and at least one of the electron transport layer and the electron injection layer is a borane derivative, a pyridine derivative, a fluoranthene derivative , At least one selected from the group consisting of BO derivatives, anthracene derivatives, benzofluorene derivatives, phosphine oxide derivatives, pyrimidine derivatives, carbazole derivatives, triazine derivatives, benzimidazole derivatives, phenanthroline derivatives, and quinolinol metal complexes 10.
- the electron transport layer and / or the electron injection layer may further be selected from alkali metals, alkaline earth metals, rare earth metals, oxides of alkali metals, halides of alkali metals, oxides of alkaline earth metals, and alkaline earth metals.
- Item 10 containing at least one selected from the group consisting of halides, oxides of rare earth metals, halides of rare earth metals, organic complexes of alkali metals, organic complexes of alkaline earth metals and organic complexes of rare earth metals
- the organic electroluminescent element as described in.
- Item 12. A display device comprising the organic electroluminescent device according to any one of items 9 to 11.
- Item 13 A lighting device comprising the organic electroluminescent device according to any one of Items 9 to 11.
- a light emitting layer material containing a polycyclic aromatic compound represented by the formula (1) particularly an optimum light emission in combination with the polycyclic aromatic compound represented by the formula (1)
- Polycyclic Aromatic Compound Represented by General Formula (1) The present invention is a polycyclic aromatic compound represented by General Formula (1).
- X 1 and X 2 in the general formula (1) are each independently>O,> S or> Se, preferably at least one is> O, more preferably both together.
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 and R 11 in the general formula (1) are each independently hydrogen, alkyl or It is an aryl which may be substituted by alkyl. However, as described later, at least one of R 1 to R 11 is independently at least one of Formula (Z-1), Formula (Z-2), Formula (Z-3), and Formula (Z-). 4) a group represented by Formula (Z-5) or Formula (Z-6).
- the “alkyl” in R 1 to R 11 and the “alkyl” which may be substituted on the “aryl” may be linear or branched, for example, linear alkyl having 1 to 24 carbon atoms or Examples thereof include branched alkyl having 3 to 24 carbon atoms.
- Alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons) is preferable, and alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons) is more preferable, and ones having 1 to 6 carbons Alkyl (branched alkyl having 3 to 6 carbon atoms) are more preferable, and alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbon atoms) is particularly preferable.
- alkyl is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl, 1 -Methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, n-heptyl, 1-methylhexyl, n-octyl, t-octyl, 1-methylheptyl, 2-ethylhexyl, 2 -Propylpentyl, n-nonyl, 2,2-dimethylheptyl, 2,6-dimethyl-4-heptyl, 3,5,5-trimethylhexyl, n-decyl, n-undecyl,
- aryl in R 1 to R 11 examples include aryl having 6 to 30 carbon atoms, preferably aryl having 6 to 24 carbon atoms, more preferably aryl having 6 to 18 carbon atoms, and having 6 to 6 carbon atoms Sixteen aryls are more preferred, aryls having 6 to 12 carbons are particularly preferred, and aryls having 6 to 10 carbons are most preferred.
- aryl include phenyl which is a single ring system, biphenylyl which is a two-ring system, naphthyl (1-naphthyl or 2-naphthyl) which is a fused bicyclic system, and terphenylyl (m-terphenylyl) which is a three-ring system.
- O-terphenylyl or p-terphenylyl fused tricyclic systems such as acenaphthyrenyl, fluorenyl, phenalenyl, phenanthrenyl, fused tetracyclic systems such as triphenylenyl, pyrenyl, naphthacenyl, fused pentacyclic systems such as perylenyl and pentacenyl etc. .
- the polycyclic aromatic compound represented by the general formula (1) is, for example, represented by the following formulas (1A) and (1B) depending on the mutual bonding form of the substituents in the a ring, b ring and c ring.
- the ring structure constituting the compound changes.
- each code in Formula (1A) and Formula (1B) is the same as the definition in Formula (1).
- the a 'ring, the b' ring and the c 'ring in the above formulas (1A) and (1B) are formed by bonding adjacent groups of the substituents R 1 to R 11 to each other to form a ring and b ring, respectively.
- an aryl ring formed together with the c ring also referred to as a fused ring formed by condensing another ring structure on the a ring, b ring or c ring.
- R 8 in the b ring and R 7 in the c ring, R 11 in the b ring and R 1 in the a ring, R 4 in the c ring and a Ring R 3 and the like do not correspond to “adjacent groups”, and these are not bonded. That is, "adjacent group” means an adjacent group on the same ring.
- aryl ring examples include an aryl ring having 10 to 20 carbon atoms, preferably an aryl ring having 10 to 18 carbon atoms, more preferably an aryl having 10 to 16 carbon atoms, and 10 to 16 carbon atoms. 14 aryl is more preferable, and aryl having 10 to 12 carbon atoms is particularly preferable. As a specific example, the description of “aryl” in R 1 to R 11 described above can be cited.
- At least one hydrogen in the formed aryl ring may be substituted with alkyl.
- alkyl A detailed description of this alkyl can refer to the description of “alkyl” in R 1 to R 11 described above.
- the compounds represented by the above formulas (1A) and (1B) correspond to, for example, the compounds represented by formulas (1-41) to (1-48) listed as specific compounds described later. That is, for example, a compound having an a ′ ring (or b ′ ring or c ′ ring) formed by condensing a benzene ring or a phenanthrene ring with a benzene ring which is a ring (or b ring or c ring), for example
- the fused ring a '(or fused ring b' or fused ring c ') formed and formed is a naphthalene ring or a triphenylene ring, respectively.
- At least one, preferably one or two, and more preferably one of R 1 to R 11 are each independently represented by the following formula (Z-1), formula (Z-2), or formula (Z) A group represented by formula -3), formula (Z-4), formula (Z-5) or formula (Z-6);
- the groups represented by formulas (Z-1) to (Z-6) are also referred to as "intermediate groups".
- Ar in the above intermediate group is each independently represented by the following formula (Ar-1), formula (Ar-2), formula (Ar-3), formula (Ar-4), formula (Ar-5), formula (Ar-6), formula (Ar-7), formula (Ar-8), formula (Ar-9), formula (Ar-10), formula (Ar-11) or formula (Ar-12) Group.
- the groups represented by the formulas (Ar-1) to (Ar-12) are also referred to as “terminal groups”.
- preferred groups are the following formulas (Ar-1-1), Formula (Ar-1-2), Formula (Ar-2-1), Formula (Ar-2-2), Formula (Ar-2-3), Formula (Ar-4-1), Formula (Ar-5) -1) a group represented by Formula (Ar-5-2) or Formula (Ar-5-3).
- the said intermediate group couple
- the above-mentioned terminal group is bonded to the above-mentioned intermediate group in * in each formula.
- X is each independently hydrogen, alkyl having 1 to 4 carbons, aryl having 6 to 18 carbons, which may be substituted with alkyl having 1 to 4 carbons, or 1 to carbons It is a C 2-18 heteroaryl which may be substituted by 4 alkyl.
- Formula (Ar-1), Formula (Ar-2), Formula (Ar-1-1), Formula (Ar-1-2), Formula (Ar-2-1), Formula (Ar-2-2) And “—Xn” in formula (Ar-2-3) represents that n Xs are independently bonded to any position.
- n is an integer of 1 to 4, preferably 1 or 2, and more preferably 1.
- alkyl at X in the terminal group and the "alkyl” which may be substituted to "aryl” or “heteroaryl” are alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbons) It is. Specifically, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl and t-butyl can be mentioned.
- aryl in X in the terminal group examples include aryl having 6 to 18 carbon atoms, preferably aryl having 6 to 16 carbon atoms, more preferably aryl having 6 to 12 carbon atoms, and having 6 to 6 carbon atoms 10 aryl is more preferred.
- a single ring system phenyl a bicyclic system biphenylyl, a fused bicyclic system naphthyl (1-naphthyl or 2-naphthyl), a tricyclic system terphenylyl (m-terphenylyl, o-terphenylyl) Or p-terphenylyl), fused tricyclic ring systems such as acenaphthyrenyl, fluorenyl, phenalenyl, phenanthrenyl, fused tetracyclic ring systems triphenylenyl, pyrenyl, naphthacenyl and the like.
- heteroaryl at X in the terminal group include heteroaryl having 2 to 18 carbon atoms, preferably heteroaryl having 2 to 16 carbons, and more preferably heteroaryl having 4 to 16 carbons, Further, C 4-14 heteroaryl is more preferable, and C 4-12 heteroaryl is particularly preferable.
- heteroaryl include, for example, a heterocycle having 1 to 5 heteroatoms selected from oxygen, sulfur and nitrogen in addition to carbon as a ring constituting atom.
- heteroaryl includes, for example, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, triazolyl, triazolyl, pyrazolyl, pyridinyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, indolyl, isoindolyl, 1H- Indazolyl, benzoimidazolyl, benzoxazolyl, benzothiazolyl, 1H-benzotriazolyl, quinolinyl, isoquinolinyl, cinnolinyl, quinazolinyl, quinoxalinyl, phthalazinyl, naphthyridinyl, purinyl, pteridinyl, carbazolyl, acridinyl, phen
- a 1 and A 2 in the above-mentioned terminal group may both be hydrogen or may be bonded to each other to form a spiro ring.
- the compound of the formula (1-195) described later is a compound in which both A 1 and A 2 in the group of the formula (Ar-5-1) are hydrogen, and the compounds of the formulas (1-191) to The compound 194) is a compound in which A 1 and A 2 in the group of the formula (Ar-5-1) are bonded to each other to form a spiro ring.
- the compound of the formula (1-201) is a compound in which A 1 and A 2 in the group of the formula (Ar-9) are bonded to each other to form a spiro ring.
- At least one hydrogen in the polycyclic aromatic compound represented by the general formula (1) may be substituted with deuterium.
- polycyclic aromatic compound represented by the general formula (1) examples include the following compounds.
- "Me” represents a methyl group
- “tBu” represents a tertiary butyl group.
- the polycyclic aromatic compound represented by General Formula (1) basically has a linking group for the a ring, the b ring and the c ring.
- a first intermediate is produced by combining (X 1 and X 2 ) (first reaction), and then a boronate ester group is introduced to the a ring (second intermediate), and this is optionally hydrolyzed
- a Lewis acid such as aluminum chloride is reacted with the second intermediate (boronic acid or boronic ester), It can be produced (third reaction).
- a polycyclic aromatic group of a group including an intermediate group represented by Formula (Z-1) to Formula (Z-6) and a terminal group represented by Formula (Ar-1) to Formula (Ar-12) As a method of introducing into a compound, a method of using a material in which “a group consisting of an intermediate group and a terminal group” has already been substituted on the a ring and b ring and / or c ring as a raw material used in the first reaction, Using a material in which an active group such as halogen or boronic acid (or a derivative thereof) is introduced to the a ring and b ring and / or c ring as a raw material to be used in the first reaction, this activity is carried out in an appropriate step thereafter
- Examples thereof include a method of substituting a group with "a group consisting of an intermediate group and a terminal group” having a boronic acid (or a derivative thereof) or a halogen.
- cross coupling reaction such as Suzuki coupling reaction
- the skeleton of the polycyclic aromatic compound of the general formula (1) can be produced by the method for producing a polycyclic aromatic compound of the general formula (2) described later, the skeleton is produced by the method.
- "a group consisting of an intermediate group and a terminal group” may be introduced.
- the cross coupling reaction can be used as described above.
- halogen include chlorine, bromine and iodine.
- general methods can be used, and examples thereof include halogenation using chlorine, bromine, iodine, N-chlorosuccinimide, N-bromosuccinimide and the like.
- a general reaction such as a nucleophilic substitution reaction or an Ullmann reaction is used to produce a first intermediate Can.
- the second reaction is a reaction for introducing a boronate such as Bpin into the first intermediate obtained in the first reaction as shown in the following scheme (1).
- Bpin is a pinacol esterified group of -B (OH) 2 .
- the symbols in the structural formulas in each of the schemes shown below are the same as the definitions described above.
- a hydrogen atom is lithiated by ortho-metalation with n-butyllithium, sec-butyllithium, t-butyllithium or the like.
- the method using n-butyllithium, sec-butyllithium or t-butyllithium etc. alone is shown, but in order to improve the reactivity, N, N, N ', N'- tetramethylethylenediamine etc. are added You may And, by adding a boronic acid esterification reaction agent such as 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane to the obtained lithiated form, pinacol ester of boronic acid Can be manufactured.
- a boronic acid esterification reaction agent such as 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
- a boronic acid can be produced by hydrolyzing the boronic acid ester produced by the method of the above scheme (1).
- boronic esters can be produced via transesterification or re-esterification by reacting the boronic esters or boronic acids obtained in the above schemes (1) and (2) with appropriate alcohols. .
- the second intermediate (boronic acid or boronic ester) having a substituent at a desired position can be produced by appropriately selecting the above-mentioned production method and appropriately selecting the raw material to be used.
- lithium was introduced to a desired position by orthometalation, but a halogen such as a bromine atom is introduced at a position where lithium is to be introduced as shown in the following scheme (3).
- Lithium can also be introduced to the desired position by metal exchange. Then, a second intermediate such as boronic acid ester can be produced from the resulting lithiated product.
- a halogen atom is lithiated by performing a halogen-lithium exchange reaction with n-butyllithium, sec-butyllithium, t-butyllithium or the like.
- the method using n-butyllithium, sec-butyllithium or t-butyllithium etc. alone is shown, but in order to improve the reactivity, N, N, N ', N'- tetramethylethylenediamine etc.
- a boronic acid esterification reaction agent such as 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
- pinacol ester of boronic acid can be manufactured.
- a method using 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is shown here, trimethoxyborane, triisopropoxyborane and the like can also be used.
- 4,4,5,5-tetramethyl-1,3,2-dioxaborolane and the like can be similarly used by applying the method described in WO 2013/016185.
- Metallation reagents used in the halogen-metal exchange reaction in the schemes described so far include alkyllithiums such as methyllithium, n-butyllithium, sec-butyllithium, t-butyllithium, isopropylmagnesium chloride, bromide
- alkyllithiums such as methyllithium, n-butyllithium, sec-butyllithium, t-butyllithium
- isopropylmagnesium chloride bromide
- Examples include isopropylmagnesium, phenylmagnesium chloride, phenylmagnesium bromide and lithium chloride complexes of isopropylmagnesium chloride known as turbo Grignard reagents.
- metallizing reagents used in the ortho metal exchange reaction in the schemes described so far include lithium diisopropylamide, lithium tetramethyl piperidide, lithium hexamethyl disilazide, potassium hexame Organic alkali compounds such as methyl disilazide, lithium tetramethyl piperidinyl magnesium chloride / lithium chloride complex, lithium tri-n-butylmagnesate and the like can be mentioned.
- N, N, N ', N'- tetramethylethylenediamine, 1,4-diazabicyclo [2.2.2] octane, N, N-dimethylpropylene urea and the like can be mentioned.
- a polycyclic intermediate represented by the general formula (1) is obtained by reacting a second intermediate such as boronic acid ester with a Lewis acid such as aluminum chloride.
- a second intermediate such as boronic acid ester
- a Lewis acid such as aluminum chloride.
- a Bronsted acid such as p-toluenesulfonic acid can be used.
- a base such as diisopropylethylamine may be added to improve selectivity and yield.
- Lewis acid AlCl 3 , AlBr 3 , AlF 3 , BF 3 ⁇ OEt 2 , BCl 3 , BBr 3 , GaCl 3 , GaBr 3 , InCl 3 , InBr 3 , In (OTf) 3, SnCl 4, SnBr 4, AgOTf, ScCl 3, Sc (OTf) 3, ZnCl 2, ZnBr 2, Zn (OTf) 2, MgCl 2, MgBr 2, Mg (OTf) 2, LiOTf, NaOTf, KOTf, Me 3 SiOTf, Cu (OTf) 2 , CuCl 2 , YCl 3 , Y (OTf) 3 , TiCl 4 , TiBr 4 , TiBr 4 , ZrCl 4 , ZrBr 4 , FeCl 3 , FeBr 3 , CoCl 3 , CoBr 3 and the like.
- these Lewis acids can also be used to be used in the above scheme (5).
- Examples of the Bronsted acid used in the above scheme (5) include p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, fluorosulfonic acid, carborane acid, trifluoroacetic acid, (trifluoromethanesulfonyl) imide, tris (trifluoromethane) And methanemethane) hydrogen chloride, hydrogen bromide, hydrogen fluoride and the like.
- examples of solid Bronsted acids include Amberlyst (trade name: Dow Chemical), Nafion (trade name: DuPont), zeolite, Teikacure (trade name: Tayca Co., Ltd.) and the like.
- Examples of the amine which may be added in the above scheme (5) include diisopropylethylamine, triethylamine, tributylamine, 1,4-diazabicyclo [2.2.2] octane, N, N-dimethyl-p-toluidine, N, N- Dimethylaniline, pyridine, 2,6-lutidine, 2,6-di-t-butylamine and the like can be mentioned.
- o-dichlorobenzene, chlorobenzene, chlorobenzene, toluene, benzene, methylene chloride, chloroform, dichloroethylene, benzotrifluoride, decalin, cyclohexane, hexane, heptane, 1,2,4-trimethyl Benzene, xylene, diphenyl ether, anisole, cyclopentyl methyl ether, tetrahydrofuran, dioxane, methyl-t-butyl ether and the like can be mentioned.
- the polycyclic aromatic compound represented by the general formula (1) also includes a compound in which at least a part of hydrogen atoms are substituted with deuterium, but such a compound may be deuterium at a desired site. It can synthesize
- the multimer of the compound can be used as a light emitting layer material in combination with the polycyclic aromatic compound represented by the general formula (1), and basically functions as a dopant.
- the polycyclic aromatic compound and the multimer thereof are preferably a polycyclic aromatic compound represented by the following general formula (2 ′), or a polycyclic having a plurality of structures represented by the following general formula (2 ′) It is a multimer of aromatic compounds.
- the compound of General formula (2) or General formula (2 '), and its multimer are compounds different from the polycyclic aromatic compound represented by General formula (1), and are represented by General formula (1).
- the polycyclic aromatic compound to be substituted is excluded from the definition of the general formula (2) or the general formula (2 ').
- Ring A, ring B and ring C are each independently an aryl ring or a heteroaryl ring, and at least one hydrogen in these rings may be substituted.
- X 1 and X 2 are each independently> O or> N—R, and R in the aforementioned> N—R is optionally substituted aryl, optionally substituted heteroaryl or alkyl, and And R in said NR may be bonded to said A ring, B ring and / or C ring by a linking group or a single bond, and At least one hydrogen in the compound or structure represented by Formula (2) may be substituted with halogen, cyano or deuterium.
- R 1 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, and at least one hydrogen in these is aryl, It may be substituted by heteroaryl or alkyl, and adjacent groups of R 1 to R 11 may be combined to form an aryl ring or heteroaryl ring together with the a ring, b ring or c ring.
- At least one hydrogen in the formed ring may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, and at least one of them is Hydrogen is Ally Optionally substituted with aryl, heteroaryl or alkyl, X 1 and X 2 are each independently> N—R, and R in the above> N—R is aryl having 6 to 12 carbons, heteroaryl having 2 to 15 carbons, or alkyl having 1 to 6 carbons And R in> N—R may be bonded to the a ring, b ring and / or c ring via —O—, —S—, —C (—R) 2 — or a single bond. And R in -C (-R) 2- is alkyl having 1 to 6 carbon atoms, and At least one hydrogen in the compound represented by the formula (2 ′) may be substituted with halogen or deuterium
- the ring A, ring B and ring C in the general formula (2) are each independently an aryl ring or a heteroaryl ring, and at least one hydrogen in these rings may be substituted by a substituent.
- This substituent is substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted diheteroarylamino, substituted or unsubstituted arylheteroarylamino (aryl and An amino group having a heteroaryl), substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy or substituted or unsubstituted aryloxy is preferable.
- aryl or heteroaryl ring is a fused two-ring structure at the center of the general formula (2) composed of “B”, “X 1 ” and “X 2 ” (hereinafter this structure is referred to as “D structure”) It is preferable to have a 5- or 6-membered ring which shares a bond with the
- the “fused 2-ring structure (D structure)” refers to the two saturated carbon atoms comprising “B”, “X 1 ” and “X 2 ” shown at the center of the general formula (2) It means a structure in which a hydrogen ring is fused.
- “a six-membered ring sharing a bond with a fused two-ring structure” means, for example, the a ring (benzene ring (six-membered ring)) fused to the D structure as shown in the above general formula (2 ′) Do.
- an aryl ring or heteroaryl ring (which is a ring A) has this six-membered ring” means that only this six-membered ring forms an A ring or that it includes this six-membered ring. It means that another ring etc. is further condensed to this 6-membered ring to form an A ring.
- an aryl ring or heteroaryl ring having a 6-membered ring (A ring) having a 6-membered ring” referred to herein means a 6-membered ring constituting all or part of the A ring fused to the D structure. Means to The same applies to "B ring (b ring)", “C ring (c ring)" and "5 membered ring”.
- Ring A (or ring B, ring C) in the general formula (2) is the ring a in the general formula (2 ′) and its substituents R 1 to R 3 (or ring b and its substituents R 4 to R 7 , c ring and its substituents R 8 to R 11 ). That is, the general formula (2 ′) corresponds to a structure in which “A to C ring having a 6-membered ring” is selected as the A to C ring of the general formula (2). In that sense, each ring of the general formula (2 ′) is represented by a to c in lower case.
- adjacent groups among the substituents R 1 to R 11 of the a ring, b ring and c ring are combined to form an aryl ring or a heteroaryl ring together with the a ring, b ring or c ring
- at least one hydrogen in the ring formed may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, At least one hydrogen in these may be substituted with aryl, heteroaryl or alkyl.
- the compounds represented by the general formula (2 ′) can be represented by the following formulas (2′-1) and (2′-2) depending on the mutual bonding form of the substituents in the a ring, b ring and c ring.
- the ring structure that makes up the compound changes.
- the ring A ′, the ring B ′ and the ring C ′ in each formula correspond to the ring A, the ring B and the ring C in the general formula (2), respectively.
- the definitions of R 1 to R 11 , a, b, c, X 1 and X 2 in each formula are the same as the definitions in General Formula (2 ′).
- the ring A ′, the ring B ′ and the ring C ′ in the above formulas (2′-1) and (2′-2) can be represented by the general formula (2 ′) by the substituents R 1 to R 11
- Each of the adjacent groups is bonded to each other to represent an aryl ring or heteroaryl ring formed together with the a ring, the b ring and the c ring, respectively (other ring structures can be formed by condensing the a ring, the b ring or the c ring And fused rings).
- R 8 in the b ring and R 7 in the c ring, R 11 in the b ring and R 1 and c in the a ring Ring R 4 and ring a R 3 and the like do not correspond to “adjacent groups”, and these are not bonded. That is, "adjacent group” means an adjacent group on the same ring.
- the compounds represented by the above formulas (2′-1) and (2′-2) are, for example, those represented by the formulas (2-402) to (2-409) or (2) listed as specific compounds described later. 412) to compounds represented by Formula (2-419). That is, for example, A 'ring (or B') formed by condensing a benzene ring, an indole ring, a pyrrole ring, a benzofuran ring or a benzothiophene ring etc.
- a benzene ring which is a ring (or b ring or c ring)
- a fused ring A ′ (or a fused ring B ′ or a fused ring C ′) which is a compound having a ring or a C ′ ring), and which is a naphthalene ring, a carbazole ring, an indole ring, a dibenzofuran ring or a dibenzothiophene ring, respectively Etc.
- X 1 and X 2 in the general formula (2) are each independently> O or> N—R, and R in the above> N—R may be optionally substituted aryl, which may be substituted R in> N—R may be bonded to the B ring and / or the C ring via a linking group or a single bond, and the linking group is —O—, —S— or -C (-R) 2 -is preferred.
- R in the above “—C (—R) 2 —” is hydrogen or alkyl. This description is the same for X 1 and X 2 in the general formula (2 ′).
- the definition of “in R of> N—R is bonded to the ring A, ring B and / or ring C via a linking group or a single bond” in the general formula (2) is a general formula (2 ′)
- This definition can be expressed as a compound represented by the following formula (2′-3-1), which has a ring structure in which X 1 or X 2 is incorporated into fused ring B ′ and fused ring C ′.
- B ′ formed by condensation of other rings such that X 1 (or X 2 ) is incorporated to a benzene ring which is ring b (or ring c) in the general formula (2 ′) Or a compound having a C 'ring).
- This compound is, for example, a compound represented by Formula (2-451) to Formula (2-462) and a compound represented by Formula (2-1401) to Formula (2-1460) listed as specific compounds described later.
- the fused ring B '(or fused ring C') formed and formed corresponding to the compound as such is for example a phenoxazine ring, a phenothiazine ring or an acridine ring.
- the above definition is a ring structure in which X 1 and / or X 2 is incorporated into the fused ring A ′, which is represented by the following formula (2′-3-2) or the formula (2′-3-3) It can express also with the compound which it has. That is, for example, a compound having an A ′ ring formed by condensation of other rings such that X 1 (and / or X 2 ) is incorporated into the benzene ring which is a ring in the general formula (2 ′) is there.
- This compound corresponds to, for example, the compounds represented by Formula (2-471) to Formula (2-479) listed as specific compounds described later, and the fused ring A 'formed is, for example, phenoxazine Ring, phenothiazine ring or acridine ring.
- the definition of 2 is the same as the definition in General Formula (2 ').
- Examples of the “aryl ring” which is ring A, ring B and ring C in the general formula (2) include an aryl ring having 6 to 30 carbon atoms, preferably an aryl ring having 6 to 16 carbon atoms, The aryl ring of 6 to 12 is more preferable, and the aryl ring of 6 to 10 carbon atoms is particularly preferable.
- this "aryl ring” is an aryl ring defined by the general formula (2 ') and formed by "groups adjacent to each other of R 1 to R 11 are combined with a ring, b ring or c ring.
- the total number of carbons 9 in the fused ring in which a 5-membered ring is fused is a lower limit It becomes carbon number.
- aryl ring examples include a benzene ring which is a monocyclic ring, a biphenyl ring which is a bicyclic ring, a naphthalene ring which is a fused bicyclic ring, and a terphenyl ring which is a tricyclic ring (m-terphenyl, o -Terphenyl, p-terphenyl), fused tricyclic ring, acenaphthylene ring, fluorene ring, phenalene ring, phenanthrene ring, fused tetracyclic ring triphenylene ring, pyrene ring, naphthacene ring, fused pentacyclic ring Perylene ring, pentacene ring and the like can be mentioned.
- heteroaryl ring which is ring A, ring B and ring C in the general formula (2) include a heteroaryl ring having 2 to 30 carbon atoms, preferably a heteroaryl ring having 2 to 25 carbon atoms
- the heteroaryl ring having 2 to 20 carbon atoms is more preferable, the heteroaryl ring having 2 to 15 carbon atoms is more preferable, and the heteroaryl having 2 to 10 carbon atoms is particularly preferable.
- heteroaryl ring for example, a heterocyclic ring containing 1 to 5 hetero atoms selected from oxygen, sulfur and nitrogen in addition to carbon as a ring constituting atom can be mentioned.
- the “heteroaryl ring” is a hetero ring formed by combining adjacent groups of “R 1 to R 11 ” defined by the general formula (2 ′) with a ring, b ring or c ring. Since the a ring (or b ring, c ring) is already composed of a benzene ring having 6 carbon atoms, the total carbon number 6 of the fused ring in which a 5-membered ring is fused is It becomes the lower limit carbon number.
- heteroaryl ring includes, for example, pyrrole ring, oxazole ring, isoxazole ring, thiazole ring, isothiazole ring, imidazole ring, oxadiazole ring, thiadiazole ring, triazole ring, tetrazole ring, pyrazole ring, Pyridine ring, pyrimidine ring, pyridazine ring, pyrazine ring, triazine ring, indole ring, isoindole ring, 1H-indazole ring, benzoimidazole ring, benzoxazole ring, benzothiazole ring, 1H-benzotriazole ring, quinoline ring, isoquinoline ring , Cinnoline ring, quinazoline ring, quinoxaline ring, phthalazine ring, naphthyridine ring, purine ring
- At least one hydrogen in the above “aryl ring” or “heteroaryl ring” is the first substituent, substituted or unsubstituted “aryl”, substituted or unsubstituted “heteroaryl”, substituted or unsubstituted "Diarylamino", substituted or unsubstituted "diheteroarylamino", substituted or unsubstituted "arylheteroarylamino", substituted or unsubstituted "alkyl", substituted or unsubstituted "alkoxy", or substituted Or aryl of "diarylamino" as “aryl” or “diarylamino” as the first substituent, or heteroaryl of "diheteroarylamino" although it may be substituted by unsubstituted "aryloxy”.
- Aryl and heteroaryl of "arylheteroarylamino” and aryl of "aryloxy” It is a monovalent radical of the above-described “aryl ring” or “heteroaryl ring” and the like as.
- alkyl as the first substituent may be either linear or branched, and examples thereof include linear alkyl having 1 to 24 carbon atoms and branched alkyl having 3 to 24 carbon atoms. .
- Alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons) is preferable, and alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons) is more preferable, and ones having 1 to 6 carbons Alkyl (branched alkyl having 3 to 6 carbon atoms) are more preferable, and alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbon atoms) is particularly preferable.
- alkyl examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl and 1-methyl Pentyl, 4-methyl-2-pentyl, 3, 3-dimethylbutyl, 2-ethylbutyl, n-heptyl, 1-methylhexyl, n-octyl, t-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propyl Pentyl, n-nonyl, 2,2-dimethylheptyl, 2,6-dimethyl-4-heptyl, 3,5,5-trimethylhexyl, n-decyl, n-undecyl, 1-methyldecyl,
- alkoxy as the first substituent includes, for example, linear or branched alkoxy having 1 to 24 carbon atoms.
- C1-C18 alkoxy branched alkoxy having 3 to 18 carbon atoms
- alkoxy having 1 to 12 carbons branched alkoxy having 3 to 12 carbon atoms
- one carbon Alkoxy to 6 branched alkoxy having 3 to 6 carbon atoms
- alkoxy having 1 to 4 carbon atoms branched alkoxy having 3 to 4 carbon atoms
- alkoxy examples include methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, t-butoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy and the like.
- the first substituent substituted or unsubstituted "aryl”, substituted or unsubstituted “heteroaryl”, substituted or unsubstituted "diarylamino", substituted or unsubstituted "diheteroarylamino", substituted Or unsubstituted "arylheteroarylamino", substituted or unsubstituted "alkyl", substituted or unsubstituted "alkoxy", or substituted or unsubstituted "aryloxy” is described as being substituted or unsubstituted As such, at least one hydrogen in them may be substituted with a second substituent.
- Examples of the second substituent include, for example, aryl, heteroaryl or alkyl, and specific examples thereof include the monovalent groups of the above-mentioned “aryl ring” or “heteroaryl ring”, and also the first See the description of “alkyl” as a substituent.
- aryl or heteroaryl as the second substituent at least one hydrogen in them is substituted with an aryl such as phenyl (a specific example is the above-mentioned group) or an alkyl such as methyl (a specific example is the above-mentioned group)
- aryl such as phenyl
- alkyl such as methyl
- a carbazolyl group in which at least one hydrogen at position 9 is substituted with an aryl such as phenyl or an alkyl such as methyl is also a hetero compound as a second substituent. Included in aryl.
- Examples thereof include monovalent groups of the "aryl ring” or the "heteroaryl ring” described in the formula (2).
- the alkyl or alkoxy in R 1 to R 11 the description of “alkyl” or “alkoxy” as the first substituent in the description of the general formula (2) described above can be referred to.
- aryl, heteroaryl or alkyl as a substituent to these groups are also the same.
- R in> N—R in X 1 and X 2 of the general formula (2) is aryl, heteroaryl or alkyl which may be substituted by the above-mentioned second substituent, and at least one of aryl and heteroaryl Hydrogen may, for example, be substituted by alkyl.
- the aryl, heteroaryl and alkyl include the groups described above. In particular, aryl having 6 to 10 carbons (eg, phenyl, naphthyl and the like), heteroaryl having 2 to 15 carbons (eg, carbazolyl and the like), and alkyl having 1 to 4 carbons (eg, methyl, ethyl and the like) are preferable. This description is the same for X 1 and X 2 in the general formula (2 ′).
- R in the linking group “—C (—R) 2 —” in the general formula (2) is hydrogen or alkyl, and examples of the alkyl include the groups described above. In particular, alkyl having 1 to 4 carbon atoms (eg, methyl, ethyl etc.) is preferable. This explanation is also true for the linking group “—C (—R) 2 —” in the general formula (2 ′).
- the light emitting layer includes a multimer of a compound having a plurality of unit structures represented by General Formula (2), preferably a multimer of a compound having a plurality of unit structures represented by General Formula (2 ′) It may be
- the multimer is preferably a 2- to 6-mer, more preferably a 2- to 3-mer, and particularly preferably a dimer.
- the multimer may be in a form having a plurality of the above unit structures in one compound, and for example, the above unit structure is a single bond, or a linking group such as an alkylene group having 1 to 3 carbon atoms, a phenylene group or a naphthylene group
- a form in which any of the rings (A ring, B ring or C ring, a ring, b ring or c ring) contained in the unit structure is bonded in a shared manner to a plurality of unit structures
- any ring (A ring, B ring or C ring, a ring, b ring or c ring) contained in the unit structure may be bonded together in a fused manner. Good.
- Examples of such multimers include, for example, the following formula (2′-4), formula (2′-4-1), formula (2′-4-2), formula (2′-5-1) to formula Multimeric compounds represented by (2′-5-4) or formula (2′-6) can be mentioned.
- the multimeric compound represented by the following formula (2'-4) corresponds to, for example, a compound represented by the formula (2-423) described later. That is, if it explains with general formula (2 '), as it shares the benzene ring which is a ring, the multimer compound which has unit structure represented by a plurality of general formulas (2') in one compound It is.
- a multimeric compound represented by the following formula (2′-4-1) corresponds to, for example, a compound represented by the formula (2-2665) described later.
- a multimeric compound represented by the following formula (2'-4-2) corresponds to, for example, a compound represented by the formula (2-2666) described later. That is, if it explains with general formula (2 '), as it shares the benzene ring which is a ring, the multimeric compound which has unit structure represented by two general formula (2') in one compound It is.
- the multimeric compounds represented by the following formulas (2′-5-1) to (2′-5-4) are, for example, those represented by formulas (2-421), (2-422), and 2-424) or the compound represented by formula (2-425). That is, if it explains with general formula (2 '), as it shares benzene ring which is b ring (or c ring), unit structure represented by a plurality of general formula (2') in one compound Is a multimeric compound possessed by
- a multimeric compound represented by the following formula (2'-6) corresponds to, for example, a compound represented by the formula (2-431) to the formula (2-435) described later.
- the multimeric compound is a multimerized form represented by the formula (2′-4), the formula (2′-4-1) or the formula (2′-4-2), and a formula (2′-5-1) It may be a multimer in which any of the formulas (2'-5-4) or the multimerization form represented by the formula (2'-6) is combined, and the formula (2'-5-1)
- the multimer may be a combination of a multimerization form represented by any of the following formula (2′-5-4) and a multimerization form represented by the formula (2′-6), A multimerization form represented by (2′-4), formula (2′-4-1) or formula (2′-4-2) and formula (2′-5-1) to formula (2′-5)
- the multimer may be a combination of the multimerization form represented by any of -4) and the multimerization form represented by formula (2'-6).
- all or part of hydrogens in the chemical structure of the compound represented by the general formula (2) or (2 ′) and its multimer may be substituted with halogen, cyano or deuterium.
- a substituent to ring A, ring B, ring C (ring A to C is an aryl ring or heteroaryl ring), ring A to C, and X 1 and X 2 >
- Halogen is fluorine, chlorine, bromine or iodine, preferably fluorine, chlorine or bromine, more preferably chlorine.
- R 1 , R 3 , R 4 to R 7 , R 8 to R 11 and R 12 to R 15 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, Alkyl, alkoxy or aryloxy, wherein at least one hydrogen may be substituted with aryl, heteroaryl or alkyl;
- X 1 is —O— or> N—R
- R in> N—R is aryl having 6 to 12 carbon atoms, heteroaryl having 2 to 15 carbon atoms, or alkyl having 1 to 6 carbon atoms, At least one hydrogen in the above may be substituted with aryl having 6 to 12 carbons, heteroaryl having 2 to 15 carbons, or alkyl having 1 to 6 carbons,
- Z 1 and Z 2 are each independently aryl, heteroaryl, diarylamino, aryloxy, aryl-substituted alkyl, hydrogen, alkyl,
- Z 1 and Z 2 preferably, each independently, an aryl having 6 to 10 carbon atoms, diarylamino (wherein aryl is an aryl having 6 to 12 carbon atoms), an aryloxy having 6 to 10 carbon atoms, 6 to 10 aryl is alkyl having 1 to 4 carbons, hydrogen or alkyl having 1 to 4 carbons, in which at least one hydrogen is substituted with alkyl having 1 to 4 carbons.
- Z 1 is more preferably a diarylamino, aryloxy, triaryl substituted alkyl having 1 to 4 carbons, hydrogen or alkyl having 1 to 4 carbons, and the aryl in each of them is independently a carbon number Phenyl, biphenylyl or naphthyl which may be substituted by 1 to 4 alkyl. More preferably, it is diarylamino, hydrogen or alkyl having 1 to 4 carbons, and aryl in diarylamino is phenyl, biphenylyl or naphthyl which may be substituted with alkyl having 1 to 4 carbons.
- Z 2 is more preferably phenyl, biphenylyl or naphthyl which may be substituted by alkyl having 1 to 4 carbon atoms, or hydrogen or alkyl having 1 to 4 carbon atoms.
- Z 1 among aryl, a phenyl group, m-biphenylyl group and p-biphenylyl group, among heteroaryls, monocyclic heteroaryl group (heteroaryl group composed of one ring such as pyridyl group), diaryl Among amino, a diphenylamino group, hydrogen, an alkyl group and an alkoxy group, and a group in which at least one hydrogen in these groups is substituted with an alkyl group alone do not have a role as a bulky substituent in the present application, It is necessary to make substituent Z 2 bulky.
- Z 2 hydrogen, an alkyl group and an alkoxy group, and a group in which at least one of the hydrogens in these groups is substituted with alkyl are not bulky, these Z 1 and Z 2 combinations are excluded from the present application. It is eaten.
- Z 1 is preferably o-biphenylyl group, o-naphthylphenyl group (group in which 1- or 2-naphthyl group is substituted at the ortho position of phenyl group), phenylnaphthylamino group, dinaphthylamino group, phenyloxy group , Triphenylmethyl group (trityl group), and at least one of these groups is substituted with alkyl (eg methyl, ethyl, i-propyl or t-butyl, preferably methyl or t-butyl, more preferably t-butyl)
- Is a group that is Z 2 is preferably a phenyl group, 1- or 2-naphthyl group, and at least one of these groups is alkyl (eg methyl, ethyl, i-propyl or t-butyl, preferably methyl or t-butyl, Preferred is
- More specific examples of the compound represented by the formula (2) and its multimer include, for example, compounds represented by the following structural formula.
- “Me” is a methyl group
- “iPr” is an isopropyl group
- “tBu” is a tertiary butyl group
- “Ph” is a phenyl group
- “D” is deuterium.
- the compound represented by the formula (2) and the multimer thereof can be used for the central atom “B” (boron) in at least one of the A ring, the B ring and the C ring (a ring, b ring and c ring)
- the central atom “B” boron
- improvement in T1 energy can be expected.
- HOMO on the benzene ring which is A ring, B ring and C ring (a ring, b ring and c ring) is more meta position to boron
- improvement in T1 energy can be expected, since LUMO localizes to the ortho and para positions relative to boron.
- R in the formula is alkyl, and may be linear or branched, and examples thereof include linear alkyl having 1 to 24 carbon atoms and branched alkyl having 3 to 24 carbon atoms.
- Alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons) is preferable, and alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons) is more preferable, and ones having 1 to 6 carbons Alkyl (branched alkyl having 3 to 6 carbon atoms) are more preferable, and alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbon atoms) is particularly preferable.
- R is phenyl.
- “PhO-” is a phenyloxy group, and this phenyl may be substituted with linear or branched alkyl, for example, linear alkyl having 1 to 24 carbons or 3 to 24 carbons.
- alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons), alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons), 1 to 6 carbons And C.sub.6-C 6 branched alkyl) and C.sub.1-C.sub.4 alkyl (C.sub.3-C 4 branched alkyl).
- R in the following formulas is each independently alkyl of 1 to 12 carbons or aryl of 6 to 10 carbons, preferably alkyl or phenyl of 1 to 4 carbons, and n is independently 0 to 2, Preferably it is 1.
- specific examples of the compound represented by the formula (2) and the multimer thereof include one or more of at least one hydrogen in one or more phenyl groups or one phenylene group in the compound Compounds substituted by one to four alkyl having 1 to 4 carbon atoms, preferably alkyl having 1 to 3 carbon atoms (preferably one or more methyl groups), and more preferably one phenyl group Hydrogen at the ortho position (two at two positions, preferably any one position) or hydrogen at the ortho position of one phenylene group (at four positions at the maximum, preferably any one position) is methyl And compounds substituted with groups.
- a polycyclic aromatic compound represented by General Formula (2) or (2 ′) and a multimer thereof are basically First, an intermediate is produced by combining A ring (a ring) with B ring (b ring) and C ring (c ring) by a linking group (group containing X 1 and X 2 ) (first reaction) And then the A ring (a ring), the B ring (b ring) and the C ring (c ring) with a linking group (a group containing a central atom “B” (boron)) to obtain the final product It can be produced (second reaction).
- a central atom “B” (boron) bonding the A ring (a ring), the B ring (b ring) and the C ring (c ring)
- a hydrogen atom between X 1 and X 2 (> N—R) is ortho-metalated with n-butyllithium, sec-butyllithium, t-butyllithium or the like.
- boron trichloride, boron tribromide and the like are added to transmetalate the lithium-boron, and then a Bronsted base such as N, N-diisopropylethylamine is added to make a tandem Bora Friedel-Crafts reaction. You can get things.
- a Lewis acid such as aluminum trichloride may be added to accelerate the reaction.
- said scheme (1) and (2) mainly show the manufacturing method of the compound represented by General formula (2) and (2 '), about the multimer, several A ring ( It can be prepared by using an intermediate having ring a), ring B (ring b) and ring C (ring c). The details will be described in the following schemes (3) to (5).
- the target product can be obtained by doubling or triple the amount of the reagent such as butyllithium to be used.
- lithium was introduced to a desired position by orthometalation, but a bromine atom or the like is introduced at a position where lithium is to be introduced as in the following schemes (6) and (7). Lithium can be introduced to the desired position.
- halogen such as bromine atom or chlorine atom is introduced at the position where lithium is to be introduced as in the above schemes (6) and (7).
- Lithium can also be introduced into the desired position by exchange (Scheme (8), (9) and (10) below).
- solvent used in the above reaction are t-butylbenzene and xylene.
- the compounds having a substituent at desired positions and their multimers can be synthesized by appropriately selecting the above-mentioned synthesis method and appropriately selecting the raw materials to be used.
- the compounds represented by the general formula (2 ′) can be represented by the formula (2′-1) of the following schemes (11) and (12) depending on the mutual bonding form of the substituents in the a ring, b ring and c ring.
- the ring structure constituting the compound changes.
- the ring A ′, the ring B ′ and the ring C ′ in the above formulas (2′-1) and (2′-2) are formed by bonding adjacent groups among the substituents R 1 to R 11
- An aryl ring or a heteroaryl ring formed together with the a ring, the b ring and the c ring is shown (also referred to as a fused ring formed by condensing another ring structure to the a ring, b ring or c ring).
- the orthometalation reagents used in the above schemes (1) to (13) include alkyllithiums such as methyllithium, n-butyllithium, sec-butyllithium, t-butyllithium, lithium diisopropylamide, lithium tetramethyl Organic alkali compounds such as piperidid, lithium hexamethyl disilazide, potassium hexamethyl disilazide and the like can be mentioned.
- boron trifluoride As metal- "B” (boron) transmetallation reagents used in the above schemes (1) to (13), boron trifluoride, boron trichloride, boron tribromide, and boron triiodide are used.
- halides of boron such as halides, aminated halides of boron such as CIPN (NEt 2 ) 2 , alkoxylated boron, aryloxylated boron, and the like.
- the Bronsted base used in the above schemes (1) to (13) is N, N-diisopropylethylamine, triethylamine, 2,2,6,6-tetramethylpiperidine, 1,2,2,6,6. -Pentamethylpiperidine, N, N-dimethylaniline, N, N-dimethyl toluidine, 2,6-lutidine, sodium tetraphenylborate, potassium tetraphenylborate, triphenylborane, tetraphenylsilane, Ar 4 BNa, Ar 4 BK, Ar 3 B, Ar 4 Si (wherein Ar is aryl such as phenyl) and the like.
- Bronsted base or Lewis acid may be used to accelerate the tandem hetero Friedle-Crafts reaction.
- a boron trifluoride such as boron trifluoride, boron trichloride, boron tribromide, or a boron halide such as boron triiodide
- hydrogen fluoride is used along with the progress of the aromatic electrophilic substitution reaction.
- the use of a Bronsted base to scavenge the acid is effective because it produces an acid such as hydrogen chloride, hydrogen bromide, hydrogen iodide.
- a compound or the like in which at least a part of hydrogen atoms is substituted by deuterium a compound or the like substituted by halogen or cyano such as fluorine or chlorine
- halogen or cyano such as fluorine or chlorine
- the polycyclic aromatic compound according to the present invention can be used as a material for an organic device.
- an organic device an organic electroluminescent element, an organic field effect transistor, an organic thin film solar cell etc. are mentioned, for example.
- FIG. 1 is a schematic cross-sectional view showing the organic EL element according to the present embodiment.
- the organic electroluminescent device 100 shown in FIG. 1 includes a substrate 101, an anode 102 provided on the substrate 101, a hole injection layer 103 provided on the anode 102, and a hole injection layer 103. Provided on the light emitting layer 105 provided on the hole transport layer 104, the electron transport layer 106 provided on the light emitting layer 105, and the electron transport layer 106 provided on the light emitting layer 105. And the cathode 108 provided on the electron injection layer 107.
- the organic electroluminescent device 100 is, for example, the substrate 101, the cathode 108 provided on the substrate 101, the electron injection layer 107 provided on the cathode 108, and the electron injection layer in reverse manufacturing order.
- An electron transport layer 106 provided on the light emitting layer 107, a light emitting layer 105 provided on the electron transport layer 106, a hole transport layer 104 provided on the light emitting layer 105, and a hole transport layer 104;
- the hole injection layer 103 provided thereover and the anode 102 provided on the hole injection layer 103 may be provided.
- the minimum structural unit is configured of the anode 102, the light emitting layer 105 and the cathode 108, and the hole injection layer 103, the hole transport layer 104, the electron transport layer 106, the electron injection
- the layer 107 is an optional layer.
- Each of the layers may be a single layer or a plurality of layers.
- the layer which comprises an organic electroluminescent element other than the structure aspect of "substrate / anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode” mentioned above, "Substrate / anode / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode", "substrate / anode / hole injection layer / light emitting layer / electron transport layer / electron injection layer / cathode", “substrate / Anode / hole injection layer / hole transport layer / light emitting layer / electron injection layer / cathode "," substrate / anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / cathode "," substrate / Anode / light emitting layer / electron transport layer / electron injection layer / cathode "," substrate / anode / light emitting
- the substrate 101 is a support of the organic electroluminescent device 100, and usually, quartz, glass, metal, plastic or the like is used.
- the substrate 101 is formed in a plate shape, a film shape, or a sheet shape according to the purpose, and for example, a glass plate, a metal plate, a metal foil, a plastic film, a plastic sheet, or the like is used.
- a glass plate and a plate made of a transparent synthetic resin such as polyester, polymethacrylate, polycarbonate or polysulfone are preferable.
- soda lime glass, alkali-free glass, or the like may be used, and the thickness may be sufficient to maintain mechanical strength.
- the upper limit of the thickness is, for example, 2 mm or less, preferably 1 mm or less.
- alkali-free glass is preferable because less elution ions from glass is preferable, but soda lime glass with a barrier coat such as SiO 2 may also be commercially available. it can.
- the substrate 101 may be provided with a gas barrier film such as a dense silicon oxide film on at least one side in order to enhance the gas barrier properties, and a plate, a film or a sheet made of a synthetic resin having particularly low gas barrier properties is used as the substrate 101 When using it, it is preferable to provide a gas barrier film.
- the anode 102 plays a role of injecting holes into the light emitting layer 105.
- the hole injection layer 103 and / or the hole transport layer 104 is provided between the anode 102 and the light emitting layer 105, holes are injected into the light emitting layer 105 via these. .
- Materials forming the anode 102 include inorganic compounds and organic compounds.
- the inorganic compound for example, metal (aluminum, gold, silver, nickel, palladium, chromium, etc.), metal oxide (oxide of indium, oxide of tin, indium-tin oxide (ITO), indium-zinc oxide Substances (IZO etc.), metal halides (copper iodide etc.), copper sulfide, carbon black, ITO glass, nesa glass etc.
- the organic compound include polythiophenes such as poly (3-methylthiophene), and conductive polymers such as polypyrrole and polyaniline. In addition, it can select suitably from the substances used as an anode of an organic electroluminescent element, and can use it.
- the resistance of the transparent electrode is not limited as long as a current sufficient for light emission of the light emitting element can be supplied, and the resistance of the transparent electrode is not limited in view of the power consumption of the light emitting element.
- an ITO substrate of 300 ⁇ / sq or less functions as a device electrode, but at present it is also possible to supply a substrate of about 10 ⁇ / sq, for example 100 to 5 ⁇ / sq, preferably 50 to 5 ⁇ It is particularly desirable to use a low resistance product of / ⁇ .
- the thickness of ITO can be arbitrarily selected according to the resistance value, but usually it is often used in the range of 50 to 300 nm.
- the hole injection layer 103 plays a role of efficiently injecting holes moving from the anode 102 into the light emitting layer 105 or into the hole transport layer 104.
- the hole transport layer 104 plays a role of efficiently transporting holes injected from the anode 102 or holes injected from the anode 102 via the hole injection layer 103 to the light emitting layer 105.
- the hole injection layer 103 and the hole transport layer 104 are each formed by laminating and mixing one or two or more hole injecting / transporting materials, or a mixture of a hole injecting / transporting material and a polymer binder. Be done.
- an inorganic salt such as iron (III) chloride may be added to the hole injecting / transporting material to form a layer.
- the hole injecting / transporting substance As the hole injecting / transporting substance, it is necessary to efficiently inject / transport holes from the positive electrode between the electrodes given an electric field, the hole injection efficiency is high, and the injected holes are efficiently transported. It is desirable to do.
- the substance has a small ionization potential, a large hole mobility, and a high stability, and is a substance which hardly generates an impurity serving as a trap during production and use.
- any compound can be selected and used.
- carbazole derivatives N-phenylcarbazole, polyvinylcarbazole and the like
- biscarbazole derivatives such as bis (N-arylcarbazole) or bis (N-alkylcarbazole)
- triarylamine derivatives aromatic tertiary Polymer having amino in the main chain or side chain, 1,1-bis (4-di-p-tolylaminophenyl) cyclohexane, N, N'-diphenyl-N, N'-di (3-methylphenyl) -4 , 4'-Diaminobiphenyl, N, N'-diphenyl-N, N'-dinaphthyl-4,4'-diaminobiphenyl, N, N'-diphenyl-N, N'-di (3-methylphenyl) -4 , 4'-diphenyl-1,1'-diamine, N, N'-dinaphthyl -N,
- Thiophene derivatives oxadiazole derivatives, quinoxaline derivatives (eg, 1,4,5,8,9,12-hexaazatriphenylene-2,3,6,7,1 (11-hexacarbonitrile etc.), heterocyclic compounds such as porphyrin derivatives, polysilane etc.
- polycarbonates or styrene derivatives having the above-mentioned monomer in the side chain, polyvinylcarbazole, polysilane etc. are preferred, but It is not particularly limited as long as it is a compound capable of forming a thin film necessary for the preparation of (1), injecting holes from the anode, and transporting the holes.
- Such an organic semiconductor matrix material is composed of a compound having a good electron donating property or a compound having a good electron accepting property.
- Strong electron acceptors such as tetracyanoquinone dimethane (TCNQ) or 2,3,5,6-tetrafluorotetracyano-1,4-benzoquinone dimethane (F4TCNQ) are known for doping of electron donors.
- TCNQ tetracyanoquinone dimethane
- F4TCNQ 2,3,5,6-tetrafluorotetracyano-1,4-benzoquinone dimethane
- the light emitting layer 105 is a layer that emits light by recombining holes injected from the anode 102 and electrons injected from the cathode 108 between electrodes to which an electric field is applied.
- the material for forming the light emitting layer 105 may be a compound (light emitting compound) that emits light by being excited by the recombination of holes and electrons, and can form a stable thin film shape, and a solid state Preferably, they are compounds that exhibit strong luminescence (fluorescence) efficiency.
- a light emitting layer containing a polycyclic aromatic compound represented by the above general formula (1) as a host material and a polycyclic aromatic compound represented by the above general formula (2) or a polymer thereof as a dopant material Materials can be used.
- the light emitting layer may be a single layer or a plurality of layers, and is formed of the material for the light emitting layer (host material, dopant material).
- the host material and the dopant material may be of one type or a combination of two or more.
- the dopant material may be contained in the entire host material, partially contained or may be contained. As a doping method, it can be formed by co-evaporation with a host material, but it may be simultaneously vapor-deposited after being previously mixed with the host material.
- the amount of host material used varies depending on the type of host material, and may be determined in accordance with the characteristics of the host material.
- the standard of the amount of host material used is preferably 50 to 99.999% by weight of the entire light emitting layer material, more preferably 80 to 99.95% by weight, and still more preferably 90 to 99.9% by weight It is.
- the amount of dopant material used varies depending on the type of dopant material, and may be determined in accordance with the characteristics of the dopant material.
- the standard for the amount of dopant used is preferably 0.001 to 50% by weight, more preferably 0.05 to 20% by weight, and still more preferably 0.1 to 10% by weight of the entire light emitting layer material. is there.
- the above range is preferable in that, for example, the concentration quenching phenomenon can be prevented.
- condensed ring derivatives such as anthracene and pyrene which have been known as light emitters
- bisstyryl derivatives such as bisstyrylanthracene derivatives and distyrylbenzene derivatives
- tetraphenylbutadiene derivatives cyclopentadiene derivatives
- fluorene derivatives benzo, and the like And fluorene derivatives.
- L 1 is an arylene having 6 to 24 carbon atoms, preferably an arylene having 6 to 16 carbon atoms, more preferably an arylene having 6 to 12 carbon atoms, and particularly preferably an arylene having 6 to 10 carbon atoms.
- bivalent groups such as benzene ring, biphenyl ring, naphthalene ring, terphenyl ring, acenaphthylene ring, fluorene ring, phenalene ring, phenanthrene ring, triphenylene ring, pyrene ring, naphthacene ring, perylene ring and pentacene ring It can be mentioned.
- L 2 and L 3 are each independently aryl having 6 to 30 carbons or heteroaryl having 2 to 30 carbons.
- the aryl is preferably aryl having 6 to 24 carbon atoms, more preferably aryl having 6 to 16 carbon atoms, still more preferably aryl having 6 to 12 carbon atoms, and particularly preferably aryl having 6 to 10 carbon atoms.
- monovalent groups such as benzene ring, biphenyl ring, naphthalene ring, terphenyl ring, acenaphthylene ring, fluorene ring, phenalene ring, phenanthrene ring, triphenylene ring, pyrene ring, naphthacene ring, perylene ring and pentacene ring .
- the heteroaryl is preferably heteroaryl having 2 to 25 carbon atoms, more preferably heteroaryl having 2 to 20 carbon atoms, still more preferably heteroaryl having 2 to 15 carbon atoms, and especially heteroaryl having 2 to 10 carbon atoms Specifically, specifically, pyrrole ring, oxazole ring, isoxazole ring, thiazole ring, isothiazole ring, imidazole ring, oxadiazole ring, thiadiazole ring, triazole ring, tetrazole ring, pyrazole ring, pyridine ring, pyrimidine ring, Pyridazine ring, pyrazine ring, triazine ring, indole ring, isoindole ring, 1H-indazole ring, benzimidazole ring, benzoxazole ring, benzothiazole ring, 1H-benzotriazole ring, quinoline
- At least one hydrogen in the carbazole compound or anthracene compound represented by the above formula may be substituted with an alkyl having 1 to 6 carbon atoms, cyano, halogen or deuterium.
- TADF organic EL devices require high T1 energy for the host material of the light emitting layer
- host materials for phosphorescent organic EL devices described in Chemistry Society Reviews, 2011, 40, 2943-2970 are also TADF organic EL devices. It can be used as a host material for devices.
- the host compound is a compound having at least one structure selected from the partial structure (HA) group represented by the following formula, and each compound in the partial structure (HA) group is At least one hydrogen atom in the structures may be substituted with any structure in the partial structure (HA) group or the partial structure (HB) group, and at least one hydrogen in these structures is It may be substituted by deuterium, halogen, cyano, alkyl having 1 to 4 carbon atoms (eg, methyl or t-butyl), trimethylsilyl or phenyl.
- the host compound is preferably a compound represented by any one of the structural formulas listed below, and among these, more preferably 1 to 3 structures selected from the above partial structure (HA) group.
- a compound having one structure selected from the above partial structure (H-B) group more preferably a compound having a carbazole group as the above partial structure (HA) group, particularly preferably the following: Formula (Cz-201), Formula (Cz-202), Formula (Cz-203), Formula (Cz-204), Formula (Cz-212), Formula (Cz-221), Formula (Cz-222), Formula (Cz-261) or a compound represented by formula (Cz-262).
- at least one hydrogen may be substituted with halogen, cyano, alkyl having 1 to 4 carbon atoms (eg, methyl or t-butyl), phenyl or naphthyl.
- the dopant material is not particularly limited, and known compounds can be used, and it can be selected from various materials according to the desired emission color.
- fused ring derivatives such as phenanthrene, anthracene, pyrene, tetracene, pentacene, perylene, naphthopyrene, dibenzopyrene, rubrene and chrysene
- benzoxazole derivatives benzothiazole derivatives, benzoimidazole derivatives, benzotriazole derivatives, oxazoles Derivatives, oxadiazole derivatives, thiazole derivatives, imidazole derivatives, thiadiazole derivatives, triazole derivatives, pyrazoline derivatives, stilbene derivatives, thiophene derivatives, tetraphenyl butadiene derivatives, cyclopentadiene derivatives, bis styryl anthracene derivatives and bis styryl derivatives such
- blue to blue-green dopant materials include, for example, naphthalene, anthracene, phenanthrene, pyrene, triphenylene, perphenylene, fluorene, indene, chrysene and the like, and aromatic hydrocarbon compounds and derivatives thereof, furan, pyrrole, thiophene, Aromatic complexes such as silole, 9-silafluorene, 9,9'-spirobisilafluorene, benzothiophene, benzofuran, indole, dibenzothiophene, dibenzofuran, imidazopyridine, phenanthroline, pyrazine, naphthyridine, quinoxaline, pyrrolopyridine, thioxanthene, etc.
- Aromatic complexes such as silole, 9-silafluorene, 9,9'-spirobisilafluorene, benzothiophene, benzo
- Ring compounds and derivatives thereof distyrylbenzene derivatives, tetraphenylbutadiene derivatives, stilbene derivatives, aldazine derivatives, coumarin derivatives, imidazole, thiazole, thiasia Azole derivatives such as carbazole, carbazole, oxazole, oxadiazole and triazole and metal complexes thereof and N, N'-diphenyl-N, N'-di (3-methylphenyl) -4,4'-diphenyl-1, Aromatic amine derivatives represented by 1'-diamine may, for example, be mentioned.
- green to yellow dopant material coumarin derivatives, phthalimide derivatives, naphthalimide derivatives, perinone derivatives, pyrrolopyrrole derivatives, cyclopentadiene derivatives, acridone derivatives, quinacridone derivatives, naphthacene derivatives such as rubrene and the like can be mentioned, and further, blue Preferred examples of the blue-green dopant material include compounds introduced with a substituent capable of achieving longer wavelength such as aryl, heteroaryl, arylvinyl, amino and cyano.
- naphthalimide derivatives such as bis (diisopropylphenyl) perylene tetracarboximide, perinone derivatives, rare earth complexes such as Eu complex having acetylacetone or benzoylacetone and phenanthroline as ligands, 4 -(Dicyanomethylene) -2-methyl-6- (p-dimethylaminostyryl) -4H-pyran and analogs thereof, metal phthalocyanine derivatives such as magnesium phthalocyanine and aluminum chlorophthalocyanine, rhodamine compounds, deazaflavin derivatives, coumarin derivatives, quinacridones Derivative, phenoxazine derivative, oxazine derivative, quinazoline derivative, pyrrolopyridine derivative, squarylium derivative, biolanthrone derivative, phenazine derivative, fenoxazo Derivatives, thiadiazolopyrene derivatives and
- amines having a stilbene structure perylene derivatives, borane derivatives, aromatic amine derivatives, coumarin derivatives, pyran derivatives or pyrene derivatives are particularly preferable.
- An amine having a stilbene structure is represented by, for example, the following formula.
- Ar 1 is an m-valent group derived from aryl having 6 to 30 carbon atoms
- Ar 2 and Ar 3 are each independently aryl having 6 to 30 carbon atoms, but Ar 1 to Ar At least one of 3 has a stilbene structure
- Ar 1 to Ar 3 may be substituted with aryl, heteroaryl, alkyl, trisubstituted silyl (silyl substituted with aryl and / or alkyl) or cyano Well
- m is an integer of 1 to 4.
- the amine having a stilbene structure is more preferably diaminostilbene represented by the following formula.
- Ar 2 and Ar 3 are each independently an aryl having 6 to 30 carbon atoms, and Ar 2 and Ar 3 are aryl, heteroaryl, alkyl, trisubstituted silyl (aryl and / or alkyl and trilyl). It may be substituted by substituted silyl) or cyano.
- aryl having 6 to 30 carbon atoms are phenyl, naphthyl, acenaphthylenyl, fluorenyl, phenalenyl, phenanthrenyl, anthryl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, naphthacenyl, perylenyl, stilbenyl, distyrylphenyl, distyrylbiphenylyl. , Distyrylfluorenyl and the like.
- amines having stilbene structure are N, N, N ', N'-tetra (4-biphenylyl) -4,4'-diaminostilbene, N, N, N', N'-tetra (1-naphthyl) ) -4,4′-diaminostilbene, N, N, N ′, N′-tetra (2-naphthyl) -4,4′-diaminostilbene, N, N′-di (2-naphthyl) -N, N '-Diphenyl-4,4'-diaminostilbene, N, N'-di (9-phenanthryl) -N, N'-diphenyl-4,4'-diaminostilbene, 4,4'-bis [4 "-bis (Diphenylamino) styryl] -biphenyl, 1,4-bis [4'-bis (diphenylamino) styryl]
- perylene derivatives include, for example, 3,10-bis (2,6-dimethylphenyl) perylene, 3,10-bis (2,4,6-trimethylphenyl) perylene, 3,10-diphenylperylene, 3,4- Diphenylperylene, 2,5,8,11-tetra-t-butylperylene, 3,4,9,10-tetraphenylperylene, 3- (1'-pyrenyl) -8,11-di (t-butyl) perylene 3- (9'-anthryl) -8,11-di (t-butyl) perylene, 3,3'-bis (8,11-di (t-butyl) perylenyl) and the like.
- JP-A-11-97178, JP-A-2000-133457, JP-A-2000-26324, JP-A-2001-267079, JP-A-2001-267078, JP-A-2001-267076, Perylene derivatives described in JP-A-2000-34234, JP-A-2001-267075, and JP-A-2001-217077 may be used.
- borane derivatives include 1,8-diphenyl-10- (dimesitylboryl) anthracene, 9-phenyl-10- (dimesitylboryl) anthracene, 4- (9'-anthryl) dimesitylborylnaphthalene, 4- (10 ') -Phenyl-9'-anthryl) dimesitylborylnaphthalene, 9- (dimesitylboryl) anthracene, 9- (4'-biphenylyl) -10- (dimesitylboryl) anthracene, 9- (4 '-(N-carbazolyl) phenyl) And -10- (dimesitylboryl) anthracene.
- borane derivatives described in WO 2000/40586 and the like may be used.
- the aromatic amine derivative is represented, for example, by the following formula.
- Ar 4 is an n-valent group derived from aryl having 6 to 30 carbon atoms
- Ar 5 and Ar 6 are each independently aryl having 6 to 30 carbon atoms
- Ar 4 to Ar 6 are , Aryl, heteroaryl, alkyl, tri-substituted silyl (silyl substituted with aryl and / or alkyl) or cyano
- n is an integer of 1 to 4.
- Ar 4 is a divalent group derived from anthracene, chrysene, fluorene, benzofluorene or pyrene
- Ar 5 and Ar 6 are each independently aryl having 6 to 30 carbon atoms
- Ar 4 to Ar 6 Is optionally substituted with aryl, heteroaryl, alkyl, trisubstituted silyl (silyl substituted with aryl and / or alkyl) or cyano
- n is 2, more preferably an aromatic amine derivative .
- aryl having 6 to 30 carbon atoms include phenyl, naphthyl, acenaphthyrenyl, fluorenyl, phenalenyl, phenanthrenyl, anthryl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, naphthacenyl, perylenyl, pentacenyl and the like.
- aromatic amine derivative as a chrysene type, for example, N, N, N ', N'-tetraphenyl chrysene-6,12-diamine, N, N, N', N'-tetra (p-tolyl) Chrysene-6,12-diamine, N, N, N ', N'-tetra (m-tolyl) chrysene-6,12-diamine, N, N, N', N'-tetrakis (4-isopropylphenyl) chrysene -6,12-diamine, N, N, N ', N'-tetra (naphthalen-2-yl) chrysene-6,12-diamine, N, N'-diphenyl-N, N'-di (p-tolyl ) Chrysene-6,12-diamine, N, N'-diphenyl-N, N'-di (p-
- N, N, N ', N'-tetraphenylpyrene-1,6-diamine N, N, N', N'-tetra (p-tolyl) pyrene-1,6 -Diamine
- N, N, N ', N'-tetra (m-tolyl) pyrene-1,6-diamine N, N, N', N'-tetrakis (4-isopropylphenyl) pyrene-1,6- Diamines
- anthracene type for example, N, N, N, N, N-tetraphenylanthracene-9,10-diamine, N, N, N ', N'-tetra (p-tolyl) anthracene-9,10-diamine N, N, N ', N'-tetra (m-tolyl) anthracene-9, 10-diamine, N, N, N ', N'- tetrakis (4-isopropylphenyl) anthracene-9, 10- diamine, N, N'-diphenyl-N, N'-di (p-tolyl) anthracene-9,10-diamine, N, N'-diphenyl-N, N'-di (m-tolyl) anthracene-9,10- Diamine, N, N'-diphenyl-N, N'-bis (4-ethylphenyl) anthracene-9,10-diamine
- Examples of coumarin derivatives include coumarin-6, coumarin-334 and the like.
- coumarin derivatives described in JP-A-2004-43646, JP-A-2001-76876, and JP-A-6-298758 may be used.
- Examples of pyran derivatives include the following DCM and DCJTB.
- the electron injection layer 107 plays a role of efficiently injecting electrons moving from the cathode 108 into the light emitting layer 105 or into the electron transport layer 106.
- the electron transport layer 106 plays a role of efficiently transporting electrons injected from the cathode 108 or electrons injected from the cathode 108 via the electron injection layer 107 to the light emitting layer 105.
- the electron transport layer 106 and the electron injection layer 107 are each formed by laminating and mixing one or more electron transport / injection materials, or a mixture of an electron transport / injection material and a polymer binder.
- the electron injecting / transporting layer is a layer that injects electrons from the cathode and further transports the electrons, has high electron injection efficiency, and desirably transports the injected electrons efficiently.
- the substance has a large electron affinity, a large electron mobility, and is excellent in stability and in which impurities serving as traps are less likely to be generated during production and use.
- the electron transport capacity is so large when it mainly plays a role of being able to efficiently block the flow of holes from the anode to the cathode side without recombination. Even if it is not high, the effect of improving the light emission efficiency is equal to that of a material having a high electron transport capacity. Therefore, the electron injecting / transporting layer in the present embodiment may also include the function of a layer capable of efficiently blocking the movement of holes.
- a material (electron transport material) which forms the electron transport layer 106 or the electron injection layer 107 a compound conventionally conventionally used as an electron transport compound in a photoconductive material, used for an electron injection layer and an electron transport layer of an organic EL element It can be selected arbitrarily from the known compounds.
- a compound comprising an aromatic ring or a heteroaromatic ring composed of one or more atoms selected from carbon, hydrogen, oxygen, sulfur, silicon and phosphorus, It is preferable to contain at least one selected from pyrrole derivatives and condensed ring derivatives thereof and metal complexes having an electron accepting nitrogen.
- fused ring aromatic ring derivatives such as naphthalene and anthracene, styryl aromatic ring derivatives represented by 4,4'-bis (diphenylethenyl) biphenyl, perinone derivatives, coumarin derivatives, naphthalimide Derivatives, quinone derivatives such as anthraquinone and diphenoquinone, phosphorus oxide derivatives, carbazole derivatives and indole derivatives can be mentioned.
- metal complexes having an electron accepting nitrogen examples include hydroxyazole complexes such as hydroxyphenyl oxazole complexes, azomethine complexes, tropolone metal complexes, flavonol metal complexes, and benzoquinoline metal complexes. These materials may be used alone or in combination with different materials.
- pyridine derivatives naphthalene derivatives, anthracene derivatives, phenanthroline derivatives, perinone derivatives, coumarin derivatives, naphthalimide derivatives, anthraquinone derivatives, diphenoquinone derivatives, diphenylquinone derivatives, perylene derivatives, oxadiazoles Derivatives (1,3-bis [(4-t-butylphenyl) 1,3,4-oxadiazolyl] phenylene etc.), thiophene derivatives, triazole derivatives (N-naphthyl-2,5-diphenyl-1,3,4-) Triazole etc.), thiadiazole derivative, metal complex of oxine derivative, quinolinol metal complex, quinoxaline derivative, polymer of quinoxaline derivative, benzazole compound, gallium complex, pyrazole derivative, perfluorinated fluoride Nylene derivatives
- metal complexes having an electron accepting nitrogen can also be used, for example, hydroxyazole complexes such as quinolinol metal complexes and hydroxyphenyl oxazole complexes, azomethine complexes, tropolone metal complexes, flavonol metal complexes, benzoquinoline metal complexes, etc. It can be mentioned.
- borane derivatives pyridine derivatives, fluoranthene derivatives, BO based derivatives, anthracene derivatives, benzofluorene derivatives, phosphine oxide derivatives, pyrimidine derivatives, carbazole derivatives, triazine derivatives, benzoimidazole derivatives, phenanthroline derivatives, and quinolinol based metals Complexes are preferred.
- the borane derivative is, for example, a compound represented by the following general formula (ETM-1), and is disclosed in detail in JP-A-2007-27587.
- each of R 11 and R 12 independently represents hydrogen, alkyl, optionally substituted aryl, optionally substituted silyl, optionally substituted nitrogen-containing heterocycle, Or at least one of cyano, and R 13 to R 16 each independently represent optionally substituted alkyl or optionally substituted aryl, and X is optionally substituted arylene
- Y is an optionally substituted aryl having 16 or less carbon atoms, a substituted boryl, or an optionally substituted carbazolyl, and n is each independently an integer of 0 to 3 is there.
- R 11 and R 12 each independently represent hydrogen, alkyl, optionally substituted aryl, optionally substituted silyl, optionally substituted nitrogen-containing heterocycle Or at least one of cyano
- each of R 13 to R 16 independently represents optionally substituted alkyl or optionally substituted aryl
- each of R 21 and R 22 independently represents And at least one of hydrogen, alkyl, optionally substituted aryl, optionally substituted silyl, optionally substituted nitrogen-containing heterocycle, or cyano
- X 1 is optionally substituted
- n independently represents an integer of 0 to 3
- m independently represents an integer of 0 to 4.
- R 11 and R 12 each independently represent hydrogen, alkyl, optionally substituted aryl, optionally substituted silyl, optionally substituted nitrogen-containing heterocycle Or at least one of cyano
- R 13 to R 16 each independently represent optionally substituted alkyl or optionally substituted aryl
- X 1 is optionally substituted It is an arylene having a carbon number of 20 or less
- n is each independently an integer of 0 to 3.
- X 1 include divalent groups represented by the following formulas (X-1) to (X-9). (In each formula, R a is each independently an alkyl group or a phenyl group which may be substituted.)
- this borane derivative include, for example, the following compounds.
- the borane derivative can be produced using known starting materials and known synthetic methods.
- the pyridine derivative is, for example, a compound represented by the following formula (ETM-2), preferably a compound represented by the formula (ETM-2-1) or the formula (ETM-2-2).
- ⁇ is an n-valent aryl ring (preferably an n-valent benzene ring, naphthalene ring, anthracene ring, fluorene ring, benzofluorene ring, phenalene ring, phenanthrene ring or triphenylene ring), and n is an integer of 1 to 4 is there.
- R 11 to R 18 each independently represent hydrogen, alkyl (preferably alkyl having 1 to 24 carbon atoms), or cycloalkyl (preferably cycloalkenyl having 3 to 12 carbon atoms). Alkyl) or aryl (preferably aryl having 6 to 30 carbon atoms).
- R 11 and R 12 each independently represent hydrogen, alkyl (preferably alkyl having 1 to 24 carbon atoms), cycloalkyl (preferably cycloalkenyl having 3 to 12 carbon atoms). R 11 and R 12 may be combined to form a ring, which is alkyl) or aryl (preferably aryl having 6 to 30 carbon atoms).
- the “pyridine-based substituent” is any of the following formulas (Py-1) to (Py-15), and the pyridine-based substituents are each independently substituted with an alkyl having 1 to 4 carbon atoms It may be done.
- the pyridine-based substituent may be bonded to ⁇ ⁇ ⁇ ⁇ ⁇ , an anthracene ring or fluorene ring in each formula via a phenylene group or a naphthylene group.
- the pyridine-based substituent is any of the above formulas (Py-1) to (Py-15), and among these, it is any of the following formulas (Py-21) to (Py-44) Is preferred.
- At least one hydrogen in each pyridine derivative may be substituted with deuterium, and among the two “pyridine-based substituents” in the above formulas (ETM-2-1) and (ETM-2-2) One of them may be replaced by aryl.
- the “alkyl” in R 11 to R 18 may be linear or branched, and examples thereof include linear alkyl having 1 to 24 carbon atoms or branched alkyl having 3 to 24 carbon atoms.
- Preferred “alkyl” is alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons). More preferable “alkyl” is alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons). More preferable “alkyl” is alkyl having 1 to 6 carbons (branched alkyl having 3 to 6 carbons). Particularly preferred “alkyl” is alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbons).
- alkyl is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl, 1 -Methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, n-heptyl, 1-methylhexyl, n-octyl, t-octyl, 1-methylheptyl, 2-ethylhexyl, 2 -Propylpentyl, n-nonyl, 2,2-dimethylheptyl, 2,6-dimethyl-4-heptyl, 3,5,5-trimethylhexyl, n-decyl, n-undecyl,
- alkyl having 1 to 4 carbon atoms to be substituted to the pyridine-based substituent.
- cycloalkyl in R 11 to R 18 include cycloalkyl having 3 to 12 carbon atoms.
- Preferred “cycloalkyl” is cycloalkyl having 3 to 10 carbon atoms. More preferable “cycloalkyl” is cycloalkyl having 3 to 8 carbon atoms. More preferable “cycloalkyl” is cycloalkyl having 3 to 6 carbon atoms.
- Specific “cycloalkyl” includes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, methylcyclopentyl, cycloheptyl, methylcyclohexyl, cyclooctyl or dimethylcyclohexyl and the like.
- aryl in R 11 to R 18 , preferable aryl is aryl having 6 to 30 carbon atoms, more preferable aryl is aryl having 6 to 18 carbon atoms, and more preferably aryl having 6 to 14 carbon atoms. And particularly preferably aryl having 6 to 12 carbon atoms.
- aryl having 6 to 30 carbon atoms include phenyl which is monocyclic aryl, (1-, 2-) naphthyl which is fused bicyclic aryl, and acenaphthylene which is fused tricyclic aryl.
- C6-C30 aryl includes phenyl, naphthyl, phenanthryl, chrysenyl or triphenylenyl and the like, more preferably phenyl, 1-naphthyl, 2-naphthyl or phenanthryl, particularly preferably phenyl, 1 And -naphthyl or 2-naphthyl.
- R 11 and R 12 in the above formula (ETM-2-2) may combine to form a ring, and as a result, in the 5-membered ring of the fluorene skeleton, cyclobutane, cyclopentane, cyclopentene, cyclopentadiene, Cyclohexane, fluorene or indene may be spiro linked.
- this pyridine derivative include, for example, the following compounds.
- This pyridine derivative can be produced using known starting materials and known synthesis methods.
- the fluoranthene derivative is, for example, a compound represented by the following general formula (ETM-3), and is specifically disclosed in WO 2010/134352.
- X 12 to X 21 each represents hydrogen, halogen, linear, branched or cyclic alkyl, linear, branched or cyclic alkoxy, substituted or unsubstituted aryl, or substituted or unsubstituted Represents heteroaryl.
- this fluoranthene derivative include, for example, the following compounds.
- the BO-based derivative is, for example, a multimer of a polycyclic aromatic compound represented by the following formula (ETM-4) or a polycyclic aromatic compound having a plurality of structures represented by the following formula (ETM-4).
- R 1 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, and at least one hydrogen in these is aryl, It may be substituted by heteroaryl or alkyl.
- adjacent groups among R 1 to R 11 may be combined to form an aryl ring or heteroaryl ring together with the a ring, b ring or c ring, and at least one hydrogen in the formed ring May be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, and at least one hydrogen in these is substituted with aryl, heteroaryl or alkyl May be
- At least one hydrogen in the compound or structure represented by Formula (ETM-4) may be substituted with halogen or deuterium.
- the compound represented by the above general formula (2) or a large amount of the compound represented by the above general formula (2) is used for the explanation of the form of substituents and ring formation in the formula (ETM-4) and multimers formed by combining plural structures of the formula (ETM-4). You can cite the description of the body.
- this BO-based derivative include, for example, the following compounds.
- This BO-based derivative can be produced using known starting materials and known synthesis methods.
- One of the anthracene derivatives is, for example, a compound represented by the following formula (ETM-5-1).
- Ar is each independently divalent benzene or naphthalene, and R 1 to R 4 are each independently hydrogen, alkyl having 1 to 6 carbons, cycloalkyl having 3 to 6 carbons or carbons 6 to 20 aryl.
- Ar may be each independently selected from divalent benzene or naphthalene, and two Ar may be different or the same, but the same from the viewpoint of easiness of synthesis of anthracene derivative Is preferred.
- Ar is bonded to pyridine to form "a moiety consisting of Ar and pyridine", and this moiety is, for example, anthracene as a group represented by any of the following formulas (Py-1) to (Py-12) Combined with
- a group represented by any one of the above formulas (Py-1) to (Py-9) is preferable, and any one of the above formulas (Py-1) to (Py-6) can be used. More preferred.
- the two “sites consisting of Ar and pyridine” bonded to anthracene may have the same or different structures, but preferably have the same structure from the viewpoint of the ease of synthesis of the anthracene derivative. However, from the viewpoint of the device characteristics, it is preferable that the structures of two “portions consisting of Ar and pyridine” be the same or different.
- the alkyl having 1 to 6 carbons in R 1 to R 4 may be either linear or branched. That is, it is linear alkyl having 1 to 6 carbons or branched alkyl having 3 to 6 carbons. More preferably, it is an alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbons).
- cycloalkyl having 3 to 6 carbon atoms as R 1 to R 4 include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, methylcyclopentyl, cycloheptyl, methylcyclohexyl, cyclooctyl or dimethylcyclohexyl and the like.
- the aryl having 6 to 20 carbon atoms in R 1 to R 4 is preferably an aryl having 6 to 16 carbon atoms, more preferably an aryl having 6 to 12 carbon atoms, and particularly preferably an aryl having 6 to 10 carbon atoms.
- aryl having 6 to 20 carbon atoms include phenyl which is a monocyclic aryl, (o-, m-, p-) tolyl, (2,3-, 2,4-, 2, 5- , 2,6-, 3,4-, 3,5-) xylyl, mesityl (2, 4, 6-trimethylphenyl), (o-, m-, p-) cumenyl, bicyclic aryl (2 -, 3-, 4-) Biphenylyl, (1-, 2-) naphthyl which is a fused bicyclic aryl, terphenylyl which is a tricyclic aryl (m-terphenyl-2'-yl, m-terphenyl-4 '-Yl, m-terphenyl-5'-yl, o-terphenyl-3'-yl, o-terphenyl-4'-yl, p-terphenyl-2'-yl, m-terphenyl-2'-yl
- C6-C20 aryl is phenyl, biphenylyl, terphenylyl or naphthyl, more preferably phenyl, biphenylyl, 1-naphthyl, 2-naphthyl or m-terphenyl-5′-yl More preferably, it is phenyl, biphenylyl, 1-naphthyl or 2-naphthyl, most preferably phenyl.
- One of the anthracene derivatives is, for example, a compound represented by the following formula (ETM-5-2).
- Ar 1 's each independently represent a single bond, divalent benzene, naphthalene, anthracene, fluorene or phenalene.
- Each Ar 2 is independently an aryl having 6 to 20 carbon atoms, and the same description as “the aryl having 6 to 20 carbons” in the above formula (ETM-5-1) can be cited.
- the aryl having 6 to 16 carbon atoms is preferable, the aryl having 6 to 12 carbon atoms is more preferable, and the aryl having 6 to 10 carbon atoms is particularly preferable.
- phenyl examples thereof include phenyl, biphenylyl, naphthyl, terphenylyl, anthracenyl, acenaphthyrenyl, fluorenyl, phenalenyl, phenanthryl, triphenylenyl, pyrenyl, tetracenyl, perylenyl and the like.
- R 1 to R 4 each independently represent hydrogen, an alkyl having 1 to 6 carbon atoms, a cycloalkyl having 3 to 6 carbon atoms or an aryl having 6 to 20 carbon atoms, and the above formula (ETM-5-1) The explanation in can be cited.
- anthracene derivatives include, for example, the following compounds.
- the benzofluorene derivative is, for example, a compound represented by the following formula (ETM-6).
- Ar 1 is each independently an aryl having 6 to 20 carbon atoms, and the same description as “the aryl having 6 to 20 carbons” in the above formula (ETM-5-1) can be cited.
- the aryl having 6 to 16 carbon atoms is preferable, the aryl having 6 to 12 carbon atoms is more preferable, and the aryl having 6 to 10 carbon atoms is particularly preferable.
- phenyl examples thereof include phenyl, biphenylyl, naphthyl, terphenylyl, anthracenyl, acenaphthyrenyl, fluorenyl, phenalenyl, phenanthryl, triphenylenyl, pyrenyl, tetracenyl, perylenyl and the like.
- Each Ar 2 independently represents hydrogen, alkyl (preferably alkyl having 1 to 24 carbon atoms), cycloalkyl (preferably cycloalkyl having 3 to 12 carbon atoms) or aryl (preferably aryl having 6 to 30 carbon atoms) And two Ar 2 's may combine to form a ring.
- the “alkyl” in Ar 2 may be linear or branched, and includes, for example, linear alkyl having 1 to 24 carbon atoms or branched alkyl having 3 to 24 carbon atoms.
- Preferred “alkyl” is alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons). More preferable “alkyl” is alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons). More preferable “alkyl” is alkyl having 1 to 6 carbons (branched alkyl having 3 to 6 carbons). Particularly preferred “alkyl” is alkyl having 1 to 4 carbons (branched alkyl having 3 to 4 carbons).
- alkyl is methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl, 1 -Methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, n-heptyl, 1-methylhexyl and the like.
- cycloalkyl examples include cycloalkyl having 3 to 12 carbon atoms.
- Preferred “cycloalkyl” is cycloalkyl having 3 to 10 carbon atoms. More preferable “cycloalkyl” is cycloalkyl having 3 to 8 carbon atoms. More preferable “cycloalkyl” is cycloalkyl having 3 to 6 carbon atoms.
- Specific “cycloalkyl” includes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, methylcyclopentyl, cycloheptyl, methylcyclohexyl, cyclooctyl or dimethylcyclohexyl and the like.
- aryl in Ar 2 , preferable aryl is aryl having 6 to 30 carbon atoms, more preferable aryl is aryl having 6 to 18 carbon atoms, more preferably aryl having 6 to 14 carbon atoms, and in particular Preferably, it is aryl having 6 to 12 carbon atoms.
- aryl having 6 to 30 carbon atoms include phenyl, naphthyl, acenaphthylenyl, fluorenyl, phenalenyl, phenanthryl, triphenylenyl, pyrenyl, naphthacenyl, perylenyl, pentacenyl and the like.
- Two Ar 2 may combine to form a ring, and as a result, cyclobutane, cyclopentane, cyclopentene, cyclopentadiene, cyclohexane, fluorene or indene etc. is spiro bonded to the 5-membered ring of the fluorene skeleton May be
- This benzofluorene derivative can be produced using known raw materials and known synthetic methods.
- the phosphine oxide derivative is, for example, a compound represented by the following formula (ETM-7-1). The details are also described in WO 2013/079217.
- R 5 is a substituted or unsubstituted alkyl having 1 to 20 carbons, aryl having 6 to 20 carbons, or heteroaryl having 5 to 20 carbons
- R 6 represents CN, substituted or unsubstituted alkyl having 1 to 20 carbons, heteroalkyl having 1 to 20 carbons, aryl having 6 to 20 carbons, heteroaryl having 5 to 20 carbons, or 1 to 6 carbons 20 alkoxy or aryloxy having 6 to 20 carbon atoms
- R 7 and R 8 are each independently substituted or unsubstituted aryl having 6 to 20 carbon atoms or heteroaryl having 5 to 20 carbon atoms
- R 9 is oxygen or sulfur
- j is 0 or 1
- k is 0 or 1
- r is an integer of 0 to 4
- q is an
- the phosphine oxide derivative may be, for example, a compound represented by the following formula (ETM-7-2).
- R 1 to R 3 which may be the same or different, are hydrogen, an alkyl group, a cycloalkyl group, an aralkyl group, an alkenyl group, a cycloalkenyl group, a cycloalkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an arylether group, an arylthioether group It is selected from an aryl group, a heterocyclic group, a halogen, a cyano group, an aldehyde group, a carbonyl group, a carboxyl group, an amino group, a nitro group, a silyl group, and a condensed ring formed between adjacent substituents.
- Ar 1 may be the same or different and is an arylene group or a heteroarylene group
- Ar 2 may be the same or different and is an aryl group or a heteroaryl group.
- at least one of Ar 1 and Ar 2 has a substituent or forms a condensed ring with an adjacent substituent.
- n is an integer of 0 to 3, no unsaturated structural moiety exists when n is 0, and R 1 does not exist when n is 3.
- the alkyl group is, for example, a saturated aliphatic hydrocarbon group such as a methyl group, an ethyl group, a propyl group or a butyl group, which may be unsubstituted or substituted.
- a saturated aliphatic hydrocarbon group such as a methyl group, an ethyl group, a propyl group or a butyl group, which may be unsubstituted or substituted.
- an alkyl group, an aryl group, a heterocyclic group etc. can be mentioned, This point is common also to the following description.
- the carbon number of the alkyl group is not particularly limited, but is usually in the range of 1 to 20 from the viewpoint of availability and cost.
- the cycloalkyl group is a saturated alicyclic hydrocarbon group such as cyclopropyl, cyclohexyl, norbornyl, adamantyl and the like, which may be unsubstituted or substituted.
- the carbon number of the alkyl group moiety is not particularly limited, but is usually in the range of 3 to 20.
- the aralkyl group is, for example, an aromatic hydrocarbon group via an aliphatic hydrocarbon such as benzyl group or phenylethyl group, and both the aliphatic hydrocarbon and the aromatic hydrocarbon may be substituted even without substitution. It does not matter.
- the carbon number of the aliphatic moiety is not particularly limited, but is usually in the range of 1 to 20.
- an alkenyl group shows the unsaturated aliphatic hydrocarbon group containing double bonds, such as a vinyl group, an allyl group, and a butadienyl group, for example, This may be unsubstituted or substituted.
- the carbon number of the alkenyl group is not particularly limited, but is usually in the range of 2 to 20.
- a cycloalkenyl group shows the unsaturated alicyclic hydrocarbon group containing double bonds, such as a cyclopentenyl group, a cyclopentadienyl group, a cyclohexene group etc., and this may be unsubstituted or substituted, I do not mind.
- the alkynyl group means, for example, an unsaturated aliphatic hydrocarbon group containing a triple bond such as an acetylenyl group, which may be unsubstituted or substituted.
- the carbon number of the alkynyl group is not particularly limited, but is usually in the range of 2 to 20.
- an alkoxy group shows the aliphatic hydrocarbon group which intervened ether bonds, such as a methoxy group, for example, and the aliphatic hydrocarbon group may be unsubstituted or substituted.
- the carbon number of the alkoxy group is not particularly limited, but is usually in the range of 1 to 20.
- the alkylthio group is a group in which an oxygen atom of an ether bond of an alkoxy group is substituted by a sulfur atom.
- the aryl ether group is, for example, an aromatic hydrocarbon group via an ether bond such as a phenoxy group, and the aromatic hydrocarbon group may be unsubstituted or substituted.
- the carbon number of the aryl ether group is not particularly limited, but is usually in the range of 6 to 40.
- the arylthioether group is a group in which the oxygen atom of the ether bond of the arylether group is substituted by a sulfur atom.
- an aryl group shows aromatic hydrocarbon groups, such as a phenyl group, a naphthyl group, biphenylyl group, phenanthryl group, terphenyl group, pyrenyl group etc., for example.
- the aryl group may be unsubstituted or substituted.
- the carbon number of the aryl group is not particularly limited, but is usually in the range of 6 to 40.
- the heterocyclic group is a cyclic structural group having an atom other than carbon, such as furanyl group, thiophenyl group, oxazolyl group, pyridyl group, quinolinyl group, carbazolyl group, etc., and this group is unsubstituted or substituted. I don't care.
- the carbon number of the heterocyclic group is not particularly limited, but is usually in the range of 2 to 30.
- Halogen is fluorine, chlorine, bromine or iodine.
- the aldehyde group, the carbonyl group and the amino group can also include a group substituted with an aliphatic hydrocarbon, an alicyclic hydrocarbon, an aromatic hydrocarbon, a heterocycle or the like.
- the aliphatic hydrocarbon, the alicyclic hydrocarbon, the aromatic hydrocarbon and the heterocyclic ring may be unsubstituted or substituted.
- the silyl group indicates, for example, a silicon compound group such as a trimethylsilyl group, which may be unsubstituted or substituted.
- the carbon number of the silyl group is not particularly limited, but is usually in the range of 3 to 20.
- the silicon number is usually 1 to 6.
- the fused ring formed between adjacent substituents is, for example, Ar 1 and R 2 , Ar 1 and R 3 , Ar 2 and R 2 , Ar 2 and R 3 , R 2 and R 3 , Ar 1 and It is a conjugated or non-conjugated fused ring formed between Ar 2 and the like.
- n is 1, two R 1 's may form a conjugated or non-conjugated fused ring.
- These fused rings may contain nitrogen, oxygen and sulfur atoms in the ring structure, and may be fused to another ring.
- this phosphine oxide derivative include the following compounds.
- the phosphine oxide derivative can be produced using known raw materials and known synthetic methods.
- the pyrimidine derivative is, for example, a compound represented by the following formula (ETM-8), and preferably a compound represented by the following formula (ETM-8-1). The details are also described in International Publication No. WO 2011/01689.
- Each Ar is independently an optionally substituted aryl or an optionally substituted heteroaryl.
- n is an integer of 1 to 4, preferably an integer of 1 to 3, and more preferably 2 or 3.
- aryl of “optionally substituted aryl” include aryl having 6 to 30 carbon atoms, preferably aryl having 6 to 24 carbon atoms, more preferably aryl having 6 to 20 carbon atoms, More preferably, it is aryl having 6 to 12 carbon atoms.
- aryl is phenyl which is monocyclic aryl, (2-, 3-, 4-) biphenylyl which is bicyclic aryl, (1-, 2-) naphthyl which is fused bicyclic aryl , A tricyclic aryl, terphenylyl (m-terphenyl-2'-yl, m-terphenyl-4'-yl, m-terphenyl-5'-yl, o-terphenyl-3'-yl, o -Terphenyl-4'-yl, p-terphenyl-2'-yl, m-terphenyl-2-yl, m-terphenyl-3-yl, m-terphenyl-4-yl, o-terphenyl -2-yl, o-terphenyl-3-yl, o-terphenyl-4-yl, p-terphenyl-2-yl, p-terphenyl-3-yl, p-
- heteroaryl examples include heteroaryl having 2 to 30 carbon atoms, preferably heteroaryl having 2 to 25 carbon atoms, Aryl is more preferable, C2-C15 heteroaryl is more preferable, and C2-C10 heteroaryl is particularly preferable.
- heteroaryl examples include, for example, a heterocyclic ring containing 1 to 5 hetero atoms selected from oxygen, sulfur and nitrogen in addition to carbon as a ring constituting atom.
- heteroaryl examples include furyl, thienyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, oxadiazolyl, furazanyl, thiadiazolyl, triazolyl, triazolyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, benzofuranyl, Isobenzofuranyl, benzo [b] thienyl, indolyl, isoindolyl, 1H-indazolyl, benzimidazolyl, benzoxazolyl, benzothiazolyl, 1H-benzotriazolyl, quinolyl, isoquinolyl, cinnolyl, quinazolyl, quinoxalinyl, phthalazinyl, naphthyridin
- the aryl and heteroaryl may be substituted, and may be substituted, for example, with the aryl and the heteroaryl.
- this pyrimidine derivative include, for example, the following compounds.
- the pyrimidine derivative can be produced using known starting materials and known synthetic methods.
- the carbazole derivative is, for example, a compound represented by the following formula (ETM-9), or a multimer in which a plurality of compounds are linked via a single bond or the like. Details are described in US Patent Publication No. 2014/0197386.
- Each Ar is independently an optionally substituted aryl or an optionally substituted heteroaryl.
- n is independently an integer of 0 to 4, preferably an integer of 0 to 3, and more preferably 0 or 1.
- aryl of “optionally substituted aryl” include aryl having 6 to 30 carbon atoms, preferably aryl having 6 to 24 carbon atoms, more preferably aryl having 6 to 20 carbon atoms, More preferably, it is aryl having 6 to 12 carbon atoms.
- aryl is phenyl which is monocyclic aryl, (2-, 3-, 4-) biphenylyl which is bicyclic aryl, (1-, 2-) naphthyl which is fused bicyclic aryl , A tricyclic aryl, terphenylyl (m-terphenyl-2'-yl, m-terphenyl-4'-yl, m-terphenyl-5'-yl, o-terphenyl-3'-yl, o -Terphenyl-4'-yl, p-terphenyl-2'-yl, m-terphenyl-2-yl, m-terphenyl-3-yl, m-terphenyl-4-yl, o-terphenyl -2-yl, o-terphenyl-3-yl, o-terphenyl-4-yl, p-terphenyl-2-yl, p-terphenyl-3-yl, p-
- heteroaryl examples include heteroaryl having 2 to 30 carbon atoms, preferably heteroaryl having 2 to 25 carbon atoms, Aryl is more preferable, C2-C15 heteroaryl is more preferable, and C2-C10 heteroaryl is particularly preferable.
- heteroaryl examples include, for example, a heterocyclic ring containing 1 to 5 hetero atoms selected from oxygen, sulfur and nitrogen in addition to carbon as a ring constituting atom.
- heteroaryl examples include furyl, thienyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, oxadiazolyl, furazanyl, thiadiazolyl, triazolyl, triazolyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, benzofuranyl, Isobenzofuranyl, benzo [b] thienyl, indolyl, isoindolyl, 1H-indazolyl, benzimidazolyl, benzoxazolyl, benzothiazolyl, 1H-benzotriazolyl, quinolyl, isoquinolyl, cinnolyl, quinazolyl, quinoxalinyl, phthalazinyl, naphthyridin
- the aryl and heteroaryl may be substituted, and may be substituted, for example, with the aryl and the heteroaryl.
- the carbazole derivative may be a multimer in which a compound represented by the above formula (ETM-9) is bound in plural by a single bond or the like.
- an aryl ring preferably a polyvalent benzene ring, a naphthalene ring, an anthracene ring, a fluorene ring, a benzofluorene ring, a phenalene ring, a phenanthrene ring or a triphenylene ring
- an aryl ring preferably a polyvalent benzene ring, a naphthalene ring, an anthracene ring, a fluorene ring, a benzofluorene ring, a phenalene ring, a phenanthrene ring or a triphenylene ring
- this carbazole derivative include the following compounds.
- This carbazole derivative can be produced using known raw materials and known synthetic methods.
- the triazine derivative is, for example, a compound represented by the following formula (ETM-10), and preferably a compound represented by the following formula (ETM-10-1). Details are described in U.S. Patent Publication No. 2011/0156013.
- Each Ar is independently an optionally substituted aryl or an optionally substituted heteroaryl.
- n is an integer of 1 to 4, preferably an integer of 1 to 3, and more preferably 2 or 3.
- aryl of “optionally substituted aryl” include aryl having 6 to 30 carbon atoms, preferably aryl having 6 to 24 carbon atoms, more preferably aryl having 6 to 20 carbon atoms, More preferably, it is aryl having 6 to 12 carbon atoms.
- aryl is phenyl which is monocyclic aryl, (2-, 3-, 4-) biphenylyl which is bicyclic aryl, (1-, 2-) naphthyl which is fused bicyclic aryl , A tricyclic aryl, terphenylyl (m-terphenyl-2'-yl, m-terphenyl-4'-yl, m-terphenyl-5'-yl, o-terphenyl-3'-yl, o -Terphenyl-4'-yl, p-terphenyl-2'-yl, m-terphenyl-2-yl, m-terphenyl-3-yl, m-terphenyl-4-yl, o-terphenyl -2-yl, o-terphenyl-3-yl, o-terphenyl-4-yl, p-terphenyl-2-yl, p-terphenyl-3-yl, p-
- heteroaryl examples include heteroaryl having 2 to 30 carbon atoms, preferably heteroaryl having 2 to 25 carbon atoms, Aryl is more preferable, C2-C15 heteroaryl is more preferable, and C2-C10 heteroaryl is particularly preferable.
- heteroaryl examples include, for example, a heterocyclic ring containing 1 to 5 hetero atoms selected from oxygen, sulfur and nitrogen in addition to carbon as a ring constituting atom.
- heteroaryl examples include furyl, thienyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, oxadiazolyl, furazanyl, thiadiazolyl, triazolyl, triazolyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, benzofuranyl, Isobenzofuranyl, benzo [b] thienyl, indolyl, isoindolyl, 1H-indazolyl, benzimidazolyl, benzoxazolyl, benzothiazolyl, 1H-benzotriazolyl, quinolyl, isoquinolyl, cinnolyl, quinazolyl, quinoxalinyl, phthalazinyl, naphthyridin
- the aryl and heteroaryl may be substituted, and may be substituted, for example, with the aryl and the heteroaryl.
- this triazine derivative include, for example, the following compounds.
- the triazine derivative can be produced using known starting materials and known synthetic methods.
- the benzimidazole derivative is, for example, a compound represented by the following formula (ETM-11).
- ⁇ is an n-valent aryl ring (preferably an n-valent benzene ring, naphthalene ring, anthracene ring, fluorene ring, benzofluorene ring, phenalene ring, phenanthrene ring or triphenylene ring), and n is an integer of 1 to 4
- pyridine-based substituent There is no pyridyl group in the “pyridine-based substituent” in the above-mentioned formulas (ETM-2), (ETM-2-1) and (ETM-2-2).
- the substituent is an imidazole group, and at least one hydrogen in the benzimidazole derivative may be substituted by deuterium.
- R 11 in the benzimidazole group is hydrogen, alkyl having 1 to 24 carbons, cycloalkyl having 3 to 12 carbons or aryl having 6 to 30 carbons, and the above-mentioned formula (ETM-2-1) and formula ( The description of R 11 in ETM-2-2) can be cited.
- ⁇ is preferably an anthracene ring or a fluorene ring, and the structure in this case can refer to the description in the above formula (ETM-2-1) or the formula (ETM-2-2).
- R 11 to R 18 in the formula can be referred to the description of the above formula (ETM-2-1) or the formula (ETM-2-2).
- the said Formula (ETM-2-1) or Formula (ETM-2-2) is demonstrated in the form which two pyridine type substituents couple
- this benzimidazole derivative include, for example, 1-phenyl-2- (4- (10-phenylanthracen-9-yl) phenyl) -1H-benzo [d] imidazole, 2- (4- (10- Naphthalen-2-yl) anthracene-9-yl) phenyl) -1-phenyl-1H-benzo [d] imidazole, 2- (3- (10- (naphthalen-2-yl) anthracene-9-yl) phenyl) -1-phenyl-1H-benzo [d] imidazole, 5- (10- (naphthalen-2-yl) anthracene-9-yl) -1,2-diphenyl-1H-benzo [d] imidazole, 1- (4) -(10- (Naphthalen-2-yl) anthracen-9-yl) phenyl) -2-phenyl-1H-benzo [d] imidazole, 2- (4- (9,10) Di (
- This benzimidazole derivative can be produced using known raw materials and known synthetic methods.
- the phenanthroline derivative is, for example, a compound represented by the following formula (ETM-12) or the formula (ETM-12-1). Details are described in WO2006 / 021982.
- ⁇ is an n-valent aryl ring (preferably an n-valent benzene ring, naphthalene ring, anthracene ring, fluorene ring, benzofluorene ring, phenalene ring, phenanthrene ring or triphenylene ring), and n is an integer of 1 to 4 is there.
- R 11 to R 18 in each formula are each independently hydrogen, alkyl (preferably alkyl having 1 to 24 carbon atoms), cycloalkyl (preferably cycloalkyl having 3 to 12 carbon atoms) or aryl (preferably carbon) 6 to 30 aryl).
- alkyl preferably alkyl having 1 to 24 carbon atoms
- cycloalkyl preferably cycloalkyl having 3 to 12 carbon atoms
- aryl preferably carbon 6 to 30 aryl.
- any one of R 11 to R 18 is bonded to ⁇ which is an aryl ring.
- At least one hydrogen in each phenanthroline derivative may be substituted with deuterium.
- each R is independently hydrogen, methyl, ethyl, isopropyl, cyclohexyl, phenyl, 1-naphthyl, 2-naphthyl, biphenylyl or terphenylyl.
- this phenanthroline derivative include, for example, 4,7-diphenyl-1,10-phenanthroline, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, 9,10-di (1,10- Phenanthrolin-2-yl) anthracene, 2,6-di (1,10-phenanthrolin-5-yl) pyridine, 1,3,5-tri (1,10-phenanthrolin-5-yl) benzene, 9,9 ' And difluoro-bis (1,10-phenanthrolin-5-yl), vasocuproin and 1,3-bis (2-phenyl-1,10-phenanthrolin-9-yl) benzene.
- This phenanthroline derivative can be produced using known starting materials and known synthetic methods.
- the quinolinol metal complex is, for example, a compound represented by the following general formula (ETM-13).
- R 1 to R 6 are hydrogen or a substituent
- M is Li, Al, Ga, Be or Zn
- n is an integer of 1 to 3.
- quinolinol metal complexes include 8-quinolinol lithium, tris (8-quinolinolato) aluminum, tris (4-methyl-8-quinolinolato) aluminum, tris (5-methyl-8-quinolinolato) aluminum, tris (3) , 4-Dimethyl-8-quinolinolato) aluminum, tris (4,5-dimethyl-8-quinolinolate) aluminum, tris (4,6-dimethyl-8-quinolinolato) aluminum, bis (2-methyl-8-quinolinolato) ( (Phenolate) aluminum, bis (2-methyl-8-quinolinolato) (2-methylphenolate) aluminum, bis (2-methyl-8-quinolinolato) (3-methylphenolate) aluminum, bis (2-methyl-8-) Quinolinolate) (4- Tylphenolate) aluminum, bis (2-methyl-8-quinolinolate) (2-phenylphenolate) aluminum, bis (2-methyl-8-quinolinolate) (3-phenylphenolate) aluminum, bis
- This quinolinol metal complex can be produced using known raw materials and known synthetic methods.
- the thiazole derivative is, for example, a compound represented by the following formula (ETM-14-1).
- the benzothiazole derivative is, for example, a compound represented by the following formula (ETM-14-2).
- ⁇ is an n-valent aryl ring (preferably an n-valent benzene ring, naphthalene ring, anthracene ring, fluorene ring, benzofluorene ring, phenalene ring, phenanthrene ring or triphenylene ring), and n is 1 to 4
- the “thiazole-based substituent” and the “benzothiazole-based substituent” are integers of “pyridine-based in the above-mentioned formulas (ETM-2), (ETM-2-1) and (ETM-2-2).
- the pyridyl group in the “substituent group” is a substituent in which a thiazol group or a benzothiazole group is replaced, and at least one hydrogen in a thiazole derivative and a benzothiazole derivative may be substituted by deuterium.
- ⁇ is preferably an anthracene ring or a fluorene ring, and the structure in this case can refer to the description in the above formula (ETM-2-1) or the formula (ETM-2-2).
- R 11 to R 18 in the formula can be referred to the description of the above formula (ETM-2-1) or the formula (ETM-2-2).
- R 11 to R 18 in the above formula (ETM-2-1) is replaced with a thiazole substituent (or a benzothiazole substituent) to convert “pyridine based substituent” into R 11 to R 18 You may replace by.
- thiazole derivatives or benzothiazole derivatives can be produced using known raw materials and known synthetic methods.
- the electron transport layer or the electron injection layer may further contain a substance capable of reducing the material forming the electron transport layer or the electron injection layer.
- a substance capable of reducing the material forming the electron transport layer or the electron injection layer As the reducing substance, various substances can be used as long as the substance has a certain reducibility, for example, alkali metals, alkaline earth metals, rare earth metals, oxides of alkali metals, halides of alkali metals, alkali From the group consisting of oxides of earth metals, halides of alkaline earth metals, oxides of rare earth metals, halides of rare earth metals, organic complexes of alkali metals, organic complexes of alkaline earth metals and organic complexes of rare earth metals At least one selected can be suitably used.
- alkali metals such as Na (work function 2.36 eV), K (2.28 eV), Rb (2.16 eV) or Cs (1.95 eV), Ca (1.2. Examples thereof include alkaline earth metals such as 9 eV), Sr (2.0 to 2.5 eV) or Ba (2.52 eV), and substances having a work function of 2.9 eV or less are particularly preferable.
- more preferable reducing substances are alkali metals of K, Rb or Cs, more preferably Rb or Cs, and most preferably Cs.
- alkali metals are particularly high in reducing ability, and the addition of a relatively small amount to the material forming the electron transport layer or the electron injection layer can improve the emission luminance and prolong the life of the organic EL element.
- a combination of two or more alkali metals is also preferable as a reducing substance having a work function of 2.9 eV or less, and in particular, a combination containing Cs, such as Cs and Na, Cs and K, Cs and Rb, or A combination of Cs, Na and K is preferred.
- Cs By including Cs, the reduction ability can be efficiently exhibited, and by addition to the material for forming the electron transport layer or the electron injection layer, the emission luminance in the organic EL element can be improved and the lifetime can be prolonged.
- the cathode 108 plays a role of injecting electrons into the light emitting layer 105 via the electron injection layer 107 and the electron transport layer 106.
- the material for forming the cathode 108 is not particularly limited as long as it can inject electrons into the organic layer efficiently, but the same material as the material for forming the anode 102 can be used.
- metals such as tin, indium, calcium, aluminum, silver, copper, nickel, chromium, gold, platinum, iron, zinc, lithium, sodium, potassium, cesium and magnesium or alloys thereof (magnesium-silver alloy, magnesium Indium alloy, aluminum-lithium alloy such as lithium fluoride / aluminum, etc. are preferable.
- Lithium, sodium, potassium, cesium, calcium, magnesium or alloys containing these low work function metals are effective for improving the electron injection efficiency and improving the device characteristics.
- metals such as platinum, gold, silver, copper, iron, tin, aluminum and indium, or alloys using these metals for electrode protection, and inorganic substances such as silica, titania and silicon nitride, polyvinyl alcohol, vinyl chloride It is preferable to stack a hydrocarbon-based polymer compound or the like as a preferred example.
- the method for producing these electrodes is also not particularly limited as long as conduction can be taken, such as resistance heating, electron beam evaporation, sputtering, ion plating and coating.
- ⁇ Binder which may be used in each layer>
- the materials used for the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer, and the electron injection layer described above can form each layer independently, but polyvinyl chloride, polycarbonate, or the like as a polymer binder Polystyrene, poly (N-vinylcarbazole), polymethyl methacrylate, polybutyl methacrylate, polyester, polysulfone, polyphenylene oxide, polybutadiene, hydrocarbon resin, ketone resin, phenoxy resin, polyamide, ethyl cellulose, vinyl acetate resin, ABS resin, polyurethane resin Etc., and can be used by dispersing it in a solvent-soluble resin such as phenol resin, xylene resin, petroleum resin, urea resin, melamine resin, unsaturated polyester resin, alkyd resin, epoxy resin, silicone resin, etc. is there.
- a solvent-soluble resin such as phenol resin, xylene
- Each layer constituting the organic electroluminescent element is formed of a material to be constituted of each layer by a method such as evaporation, resistance heating evaporation, electron beam evaporation, sputtering, molecular lamination, printing, spin coating or casting, or the like. It can be formed by using a thin film. There is no particular limitation on the film thickness of each layer formed in this way, and it can be appropriately set according to the property of the material, but it is usually in the range of 2 nm to 5000 nm. The film thickness can usually be measured by a crystal oscillation type film thickness measuring device or the like.
- the vapor deposition conditions differ depending on the type of material, the desired crystal structure and association structure of the film, and the like.
- the deposition conditions are generally as follows: heating temperature of the deposition crucible + 50 to + 400 ° C, degree of vacuum 10 -6 to 10 -3 Pa, deposition rate 0.01 to 50 nm / sec, substrate temperature -150 to + 300 ° C, film thickness 2 nm It is preferable to set appropriately in the range of ⁇ 5 ⁇ m.
- an organic electric field comprising a light emitting layer / electron transport layer / electron injection layer / cathode comprising anode / hole injection layer / hole transport layer / host material and dopant material
- a method for manufacturing a light emitting element is described. After forming a thin film of an anode material on a suitable substrate by vapor deposition or the like to prepare an anode, thin films of a hole injection layer and a hole transport layer are formed on the anode.
- a host material and a dopant material are co-deposited thereon to form a thin film to form a light emitting layer, an electron transporting layer and an electron injecting layer are formed on the light emitting layer, and a thin film made of a cathode material is deposited by evaporation or the like.
- the intended organic electroluminescent element is obtained by forming it as a cathode.
- the anode When a DC voltage is applied to the organic electroluminescent device thus obtained, the anode may be applied as + and the cathode may be applied as-polarity, and when a voltage of about 2 to 40 V is applied, it is transparent or semitransparent. Luminescence can be observed from the electrode side (anode or cathode, and both).
- the organic electroluminescent device also emits light when a pulse current or an alternating current is applied.
- the waveform of the alternating current to apply may be arbitrary.
- the present invention can also be applied to a display device provided with an organic electroluminescent device or a lighting device provided with an organic electroluminescent device.
- the display device or the illumination device provided with the organic electroluminescent device can be manufactured by a known method such as connecting the organic electroluminescent device according to the present embodiment and a known drive device, and can be DC drive, pulse drive, AC It can drive, using suitably well-known drive methods, such as a drive.
- Examples of the display device include a panel display such as a color flat panel display, a flexible display such as a flexible color organic electroluminescence (EL) display, and the like (for example, Japanese Patent Application Laid-Open Nos. 10-335066 and 2003-321546). See Japanese Patent Laid-Open Publication No. 2004-281086 etc.).
- a display method of a display a matrix and / or a segment system etc. are mentioned, for example.
- the matrix display and the segment display may coexist in the same panel.
- pixels for display are two-dimensionally arranged in a lattice shape, a mosaic shape, or the like, and a character or an image is displayed by a set of pixels.
- the shape and size of the pixels depend on the application. For example, for displaying images and characters on personal computers, monitors, and televisions, square pixels with one side of 300 ⁇ m or less are usually used, and in the case of a large display such as a display panel, pixels with one side of mm order become.
- monochrome display pixels of the same color may be arranged, but in color display, red, green and blue pixels are displayed side by side. In this case, there are typically delta types and stripe types.
- a line sequential driving method or an active matrix may be used.
- the line-sequential drive has an advantage that the structure is simple, in consideration of the operation characteristics, the active matrix may be superior in some cases, so it is necessary to use this in accordance with the application.
- a pattern is formed so as to display predetermined information, and a predetermined area is made to emit light.
- Examples include time and temperature displays on digital watches and thermometers, operation state displays on audio devices and induction cookers, and panel displays on automobiles.
- the lighting device examples include a lighting device such as interior lighting, a backlight of a liquid crystal display device, and the like (for example, JP 2003-257621 A, JP 2003-277741 A, and JP 2004-119211 A). Etc.).
- Backlights are mainly used for the purpose of improving the visibility of display devices that do not emit light themselves, and are used for liquid crystal display devices, clocks, audio devices, automobile panels, display boards, signs, and the like.
- backlights for liquid crystal display devices particularly for personal computer applications where thinning is an issue, considering that thinning is difficult because the conventional method is composed of a fluorescent lamp and a light guide plate
- the backlight using the light emitting element according to is characterized by being thin and lightweight.
- the polycyclic aromatic compound according to the present invention can be used for the production of an organic field effect transistor, an organic thin film solar cell, etc. in addition to the organic electroluminescent device described above.
- An organic field effect transistor is a transistor that controls current by an electric field generated by voltage input, and a gate electrode is provided in addition to a source electrode and a drain electrode. When a voltage is applied to the gate electrode, an electric field is generated, and the current can be controlled by arbitrarily stopping the flow of electrons (or holes) flowing between the source electrode and the drain electrode.
- a field effect transistor is easier to miniaturize than a simple transistor (bipolar transistor), and is often used as an element constituting an integrated circuit or the like.
- a source electrode and a drain electrode are provided in contact with the organic semiconductor active layer formed using the polycyclic aromatic compound according to the present invention, and further in contact with the organic semiconductor active layer.
- the gate electrode may be provided with the insulating layer (dielectric layer) interposed therebetween. Examples of the element structure include the following structures.
- the organic field effect transistor configured in this way is The present invention can be applied as a pixel drive switching element of a liquid crystal display of an active matrix drive system or an organic electroluminescence display.
- the organic thin film solar cell has a structure in which an anode such as ITO, a hole transport layer, a photoelectric conversion layer, an electron transport layer, and a cathode are stacked on a transparent substrate such as glass.
- the photoelectric conversion layer has a p-type semiconductor layer on the anode side and an n-type semiconductor layer on the cathode side.
- the polycyclic aromatic compound according to the present invention can be used as a material of a hole transport layer, a p-type semiconductor layer, an n-type semiconductor layer, and an electron transport layer according to its physical properties.
- the polycyclic aromatic compound according to the present invention can function as a hole transport material or an electron transport material in an organic thin film solar cell.
- the organic thin film solar cell may be appropriately provided with a hole block layer, an electron block layer, an electron injection layer, a hole injection layer, a smoothing layer and the like in addition to the above.
- known materials used for the organic thin film solar cell can be appropriately selected and used in combination.
- a 1.6 M n-butyllithium hexane solution (75 ml) was added at 0 ° C. to a flask containing diphenoxybenzene (26 g) and ortho-xylene (300 ml) under a nitrogen atmosphere. After stirring for 30 minutes, the temperature was raised to 70 ° C., and stirring was further performed for 4 hours. After distilling off hexane by heating and stirring at 100 ° C. under a nitrogen stream, the solution was cooled to ⁇ 20 ° C., boron tribromide (11.4 ml) was added, and the mixture was stirred for 1 hour.
- Phenol (65.1 g), potassium carbonate (72.0 g), 1-bromo-4-chloro-2,6-difluorobenzene (59.1 g) and N-methylpyrrolidone (NMP, 500 mL) in a nitrogen atmosphere at 120 It heat-stirred at 90 degreeC for 90 hours.
- the reaction mixture was cooled, the solid was removed by filtration and the solvent in the filtrate was concentrated in vacuo.
- the obtained oil was diluted with toluene and washed with water, and then the toluene in the organic layer was evaporated under reduced pressure.
- the obtained brown solid was decolorized using silica gel to obtain 2-bromo-5-chloro-1,3-diphenoxybenzene as a white solid (65.3 g).
- N-ethyl-N-diisopropylamine (26.9 g) was added dropwise thereto, and the mixture was heated to reflux temperature and stirred for 2 hours. After cooling, it was neutralized with an aqueous sodium acetate solution, and heptane was added to precipitate a solid. The solid is recovered by filtration under reduced pressure, decolorized using silica gel, and then recrystallized using toluene to give 7-chloro-5,9-dioxa-13b-boranaphtho [3,2,1 as a pale solid. -De] anthracene was obtained (6.3 g).
- the compound was synthesized in the same manner as in Synthesis Example (1-6) except that this 3-bromo form was used instead of 9- (4-bromophenyl) -10-phenylanthracene as a raw material.
- Synthesis was carried out in the same manner as in Synthesis Example (1-6), except that dibenzo [g, p] chrysen-2-yl trifluoromethanesulfonate was used instead of 9- (4-bromophenyl) -10-phenylanthracene as a raw material did.
- This 7-chloro compound is used instead of 3-chloro-5,9-dioxa-13b-boranaphtho [3,2,1-de] anthracene as a raw material, and further 9- (4-bromophenyl) -10-phenyl.
- the compound was synthesized in the same manner as in Synthesis Example (1-6) except that 7-bromotetraphen was used instead of anthracene.
- This 7-chloro compound is used instead of 3-chloro-5,9-dioxa-13b-boranaphtho [3,2,1-de] anthracene as a raw material, and further 9- (4-bromophenyl) -10-phenyl.
- the compound was synthesized in the same manner as in Synthesis Example (1-6) except that 7- (10-phenylanthracene-9-yl) naphthalen-2-yl trifluoromethanesulfonate was used instead of anthracene.
- This 7-chloro compound is used instead of 3-chloro-5,9-dioxa-13b-boranaphtho [3,2,1-de] anthracene as a raw material, and further 9- (4-bromophenyl) -10-phenyl.
- the compound was synthesized in the same manner as in Synthesis Example (1-6) except that 4- (10-phenylanthracen-9-yl) naphthalen-1-yl trifluoromethanesulfonate was used instead of anthracene.
- the compound was synthesized in the same manner as in Synthesis Example (1-20) except that 9- (2-naphthyl) -10-bromoanthracene was used instead of 9- (2-biphenylyl) -10-bromoanthracene as a starting material. .
- the compound was synthesized in the same manner as in Synthesis Example (1-20) except that 2-bromo-9,10-diphenylanthracene was used instead of 9- (2-biphenylyl) -10-bromoanthracene as a starting material.
- the compound was synthesized in the same manner as in Synthesis Example (1-20) except that 7-bromobenzo [a] anthracene was used instead of 9- (2-biphenylyl) -10-bromoanthracene as a starting material.
- intermediate (I) (12.0 g), intermediate (O) (10.3 g), Pd-132 (0.19 g), NaOtBu (3.9 g) and xylene (60 mL) were added, and 120 Stir for 1 hour at ° C. After the reaction, water and ethyl acetate were added and stirred, and then the organic layer was separated, washed twice with water, and concentrated to obtain a crude product. This was purified by silica gel short column (eluent: toluene) to obtain an intermediate (P) (17.3 g).
- the crude product obtained by concentrating the organic layer was purified with a silica gel short column (eluent: toluene) to obtain 3,5-di (t-butyl) phenylboronic acid pinacol ester (56.0 g) .
- -Yl) -N 1 , N 3 , N 3 -tris (4- (t-butyl) phenyl) -2-chlorobenzene-1,3-diamine was obtained (17.0 g).
- N 1- (5- (t-butyl)-[1,1′-biphenyl] -2-yl) -N 1 , N 3 , N 3 -tris (4- (t-butyl) phenyl) -2
- 1-chlorobenzene-1,3-diamine (17.0 g) and t-butylbenzene (90 ml)
- a 1.62 M t-butyllithium pentane solution 35 .1 ml
- reaction solution was cooled to room temperature, an aqueous sodium acetate solution cooled with an ice bath, and then ethyl acetate were added to separate an organic layer. After washing the organic layer with water, the solvent was distilled off under reduced pressure. Then, it refine
- purified in the silica gel column (eluent: toluene / heptane 1/4 (volume ratio)). Further reprecipitation was carried out with heptane. Finally, sublimation purification was performed to obtain a compound (2-300) (2.4 g).
- the compound (2-2712) was synthesized using the same method as the synthesis example described above.
- the structure of the obtained compound was confirmed by NMR measurement.
- 1 H-NMR (500 MHz, CDCl 3 ): ⁇ 9.00 to 8.95 (m, 2 H), 7.48 to 7.36 (m, 6 H), 7.20 to 6.95 (m, 10 H) 6.90 to 6.52 (m, 12 H), 6.48 to 6.26 (m, 2 H), 5. 60 to 5.00 (m, 2 H), 1.46 (s, 18 H), 1.26 (s, 18H).
- the compound (2-2713) was synthesized using the same method as the synthesis example described above.
- the compound (2-301) was synthesized using the same method as the synthesis example described above.
- the structure of the obtained compound was confirmed by NMR measurement.
- 1 H-NMR (500 MHz, CDCl 3 ): ⁇ 8.95 to 8.88 (m, 2H), 7.71 to 7.64 (m, 3H), 7.61 to 7.56 (m, 1H) ), 7.50 to 7.43 (m, 2H), 7.28 to 7.20 (m, 3H), 7.11 to 7.07 (m, 2H), 7.01 to 6.97 (m) , 2H), 6.85 to 6.80 (m, 1 H), 6.76 to 6.72 (m, 1 H), 6.16 (s, 1 H), 6.05 (s, 1 H), 48 to 1.43 (m, 27 H), 1. 11 (s, 9 H), 0.97 (s, 9 H).
- the polycyclic aromatic compound according to the present invention can be synthesized by a method according to the above-described synthesis example by appropriately changing the compound of the raw material.
- the quantum efficiency of the light emitting element includes internal quantum efficiency and external quantum efficiency.
- the internal quantum efficiency is obtained by pure conversion of external energy injected as electrons (or holes) into the light emitting layer of the light emitting element. Rate is shown.
- the external quantum efficiency is calculated based on the amount of this photon emitted to the outside of the light emitting element, and a part of the photon generated in the light emitting layer continues to be absorbed or reflected inside the light emitting element. In some cases, the external quantum efficiency is lower than the internal quantum efficiency because it is not emitted outside the light emitting device.
- the measurement method of the external quantum efficiency is as follows. Using a voltage / current generator R6144 manufactured by ADVANTEST CORPORATION, a voltage at which the luminance of the device reached 1000 cd / m 2 was applied to cause the device to emit light. The spectral radiance in the visible light region was measured from the direction perpendicular to the light emitting surface using a TOPCON Spectroradiometer SR-3AR. Assuming that the light emitting surface is a complete diffusion surface, the number of photons at each wavelength is a value obtained by dividing the measured value of the spectral radiance of each wavelength component by the wavelength energy and multiplying by ⁇ .
- the external quantum efficiency is the value obtained by dividing the total number of photons emitted from the device by the number of carriers injected into the device, where the number of carriers injected into the device is the value obtained by dividing the applied current value by the elementary charge.
- HI is N 4, N 4 '- diphenyl -N 4, N 4' - bis (9-phenyl -9H- carbazol-3-yl) - [1,1'-biphenyl] -4, 4′-diamine
- IL is 1,4,5,8,9,12-hexaazatriphenylene hexacarbonitrile
- HT-1 is N-([1,1′-biphenyl]- 4-yl) -9,9-dimethyl-N- (4- (9-phenyl-9H-carbazol-3-yl) phenyl) -9H-fluoren-2-amine
- HT-2 is N, N-bis (4- (dibenzo [b, d] furan-4-yl) phenyl)-[1,1 ′: 4 ′, 1 ′ ′-terphenyl] -4-amine
- EM-1 is 9- (5,9-Dioxa-13b-boranaphtho [3,
- E-1 is 4,6,8,10-tetraphenyl [1,4] benzoxaborinino [2,3,4 -Kl] fenoxaborinin
- E-2 is 3,3 ′-((2-phenylanthracene-9,10-diyl) bis (4,1-phenylene)) bis (4-methylpyridine) is there.
- the chemical structure is shown below with "Liq”.
- Example A-1 A 26 mm ⁇ 28 mm ⁇ 0.7 mm glass substrate (manufactured by Opto Science Co., Ltd.) was used as a transparent support substrate, in which ITO formed to a thickness of 180 nm by sputtering was polished to 150 nm.
- the transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition apparatus (manufactured by Showa Vacuum Co., Ltd.), and HI, IL, HT-1, HT-2, compound (1-1), compound (2-2619), A molybdenum deposition boat containing ET-1 and ET-2, respectively, and an aluminum nitride deposition boat containing Liq and magnesium and silver, respectively, were mounted.
- the following layers were formed sequentially on the ITO film of the transparent support substrate.
- the vacuum chamber is depressurized to 5 ⁇ 10 -4 Pa, and first, HI is heated to deposit to a film thickness of 40 nm, and then IL is heated to deposit a film to a thickness of 5 nm, and then Then, HT-1 was heated to deposit 15 nm thick, and then HT-2 was heated to 10 nm thick to form a four-hole hole layer.
- the compound (1-1) and the compound (2-2619) were simultaneously heated to deposit a film thickness of 25 nm to form a light emitting layer.
- the deposition rate was adjusted so that the weight ratio of compound (1-1) to compound (2-2619) was approximately 98 to 2.
- ET-1 is heated and evaporated to a film thickness of 5 nm
- ET-2 is heated and evaporated to a film thickness of 25 nm to form an electron transport layer consisting of two layers. did.
- Liq is heated to deposit 1 nm thick at a deposition rate of 0.01 to 0.1 nm / sec, and then magnesium and silver are simultaneously heated to deposit 100 nm thick.
- a cathode was formed to obtain an organic EL element.
- the deposition rate was adjusted between 0.1 nm and 10 nm / sec so that the atomic ratio of magnesium to silver was 10: 1.
- a DC voltage was applied with the ITO electrode as an anode and the magnesium / silver electrode as a cathode, and the characteristics at a light emission of 1000 cd / m 2 were measured.
- a time (hr) for maintaining a luminance of 90% or more of the initial luminance was measured.
- Comparative Examples A-1 and A-2 An organic EL device was produced according to Example A-1 except that the host material and the dopant material were changed to the materials listed in the above table, and the organic EL characteristics were similarly measured.
- Example B-1 A 26 mm ⁇ 28 mm ⁇ 0.7 mm glass substrate (manufactured by Opto Science Co., Ltd.) was used as a transparent support substrate, in which ITO formed to a thickness of 180 nm by sputtering was polished to 150 nm.
- the transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition apparatus (manufactured by Showa Vacuum Co., Ltd.), and HI, IL, HT-1, HT-2, compound (1-1), compound (2-2619), A tantalum deposition boat containing ET-1 and ET-2, respectively, and an aluminum nitride deposition boat containing Liq, LiF and aluminum, respectively, were mounted.
- the following layers were formed sequentially on the ITO film of the transparent support substrate.
- the vacuum chamber is depressurized to 5 ⁇ 10 -4 Pa, and first, HI is heated to deposit to a film thickness of 40 nm, and then IL is heated to deposit a film to a thickness of 5 nm, and then Then, HT-1 was heated to deposit 15 nm thick, and then HT-2 was heated to 10 nm thick to form a four-hole hole layer.
- the compound (1-1) and the compound (2-2619) were simultaneously heated to deposit a film thickness of 25 nm to form a light emitting layer.
- the deposition rate was adjusted so that the weight ratio of compound (1-1) to compound (2-2619) was approximately 98 to 2.
- ET-1 is heated to deposit to a film thickness of 5 nm, and then ET-2 and Liq are simultaneously heated to deposit to a film thickness of 25 nm to form a two-layer electron transport A layer was formed.
- the deposition rate was adjusted so that the weight ratio of ET-2 to Liq was approximately 50 to 50.
- LiF was heated to deposit to a film thickness of 1 nm, and then aluminum was heated to deposit a film to a thickness of 100 nm to form a cathode, whereby an organic EL element was obtained.
- a DC voltage was applied with the ITO electrode as an anode and the LiF / Al electrode as a cathode, and the characteristics at a light emission of 1000 cd / m 2 were measured.
- a time (hr) for maintaining a luminance of 90% or more of the initial luminance was measured.
- Examples B-2 to B-15 and Comparative Examples B-1 to B-2 An organic EL device was produced according to Example B-1 except that the host material and the dopant material were changed to the materials listed in the above table, and the organic EL characteristics were similarly measured.
- Example B-16 A 26 mm ⁇ 28 mm ⁇ 0.7 mm glass substrate (manufactured by Opto Science Co., Ltd.) was used as a transparent support substrate, in which ITO formed to a thickness of 180 nm by sputtering was polished to 150 nm.
- the transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition apparatus (made by Choshu Sangyo Co., Ltd.), and HI, IL, HT-1, HT-2, compound (1-82), compound (2-2619), A tantalum deposition boat containing ET-1 and ET-2, respectively, and an aluminum nitride deposition boat containing Liq, LiF and aluminum, respectively, were mounted.
- the following layers were formed sequentially on the ITO film of the transparent support substrate.
- the vacuum chamber is depressurized to 5 ⁇ 10 -4 Pa, and first, HI is heated to deposit to a film thickness of 40 nm, and then IL is heated to deposit a film to a thickness of 5 nm, and then Then, HT-1 was heated to deposit 15 nm thick, and then HT-2 was heated to 10 nm thick to form a four-hole hole layer.
- the compound (1-82) and the compound (2-2619) were simultaneously heated to deposit a film thickness of 25 nm to form a light emitting layer.
- the deposition rate was adjusted so that the weight ratio of compound (1-82) to compound (2-2619) was about 98: 2.
- ET-1 is heated to deposit to a film thickness of 5 nm, and then ET-2 and Liq are simultaneously heated to deposit to a film thickness of 25 nm to form a two-layer electron transport A layer was formed.
- the deposition rate was adjusted so that the weight ratio of ET-2 to Liq was approximately 50 to 50.
- LiF was heated to deposit to a film thickness of 1 nm, and then aluminum was heated to deposit a film to a thickness of 100 nm to form a cathode, whereby an organic EL element was obtained.
- a DC voltage was applied with the ITO electrode as an anode and the LiF / Al electrode as a cathode, and the characteristics at a light emission of 1000 cd / m 2 were measured.
- a time (hr) for maintaining a luminance of 90% or more of the initial luminance was measured.
- Examples B-17 to B-23 and Comparative Example B-3 An organic EL device was produced according to Example B-16 except that the host material and the dopant material were changed to the materials listed in the above table, and the organic EL characteristics were similarly measured.
- Example C-1 A 26 mm ⁇ 28 mm ⁇ 0.7 mm glass substrate (manufactured by Opto Science Co., Ltd.) was used as a transparent support substrate, in which ITO formed to a thickness of 180 nm by sputtering was polished to 150 nm.
- the transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition apparatus (manufactured by Showa Vacuum Co., Ltd.), and HI, IL, HT-1, HT-2, compound (1-2), compound (2-166), A tantalum deposition boat containing ET-1 and ET-2, respectively, and an aluminum nitride deposition boat containing Liq, LiF and aluminum, respectively, were mounted.
- the vacuum chamber is depressurized to 5 ⁇ 10 -4 Pa, and first, HI is heated to deposit to a film thickness of 40 nm, and then IL is heated to deposit a film to a thickness of 5 nm, and then Then, HT-1 was heated to deposit 15 nm thick, and then HT-2 was heated to 10 nm thick to form a four-hole hole layer. Next, the compound (1-2) and the compound (2-166) were simultaneously heated to deposit a film thickness of 25 nm to form a light emitting layer. The deposition rate was adjusted so that the weight ratio of compound (1-2) to compound (2-166) was about 98: 2.
- ET-1 is heated to deposit to a film thickness of 5 nm, and then ET-2 and Liq are simultaneously heated to deposit to a film thickness of 25 nm to form a two-layer electron transport A layer was formed.
- the deposition rate was adjusted so that the weight ratio of ET-2 to Liq was approximately 50 to 50.
- LiF was heated to deposit to a film thickness of 1 nm, and then aluminum was heated to deposit a film to a thickness of 100 nm to form a cathode, whereby an organic EL element was obtained.
- a DC voltage was applied with the ITO electrode as an anode and the LiF / Al electrode as a cathode, and the characteristics at a light emission of 1000 cd / m 2 were measured.
- a time (hr) for maintaining a luminance of 90% or more of the initial luminance was measured.
- Examples C-2 to C-14 An organic EL device was produced according to Example C-1 except that the host material and the dopant material were changed to the materials listed in the above table, and the organic EL characteristics were similarly measured.
- the groups represented by the formulas (Ar-1) to (Ar-12) are directly or in the formula (Z-2) to the formula (Z-6)
- the above-described characteristic effects are exhibited by bonding through the group represented by It can be understood that the above effects can not be achieved by the structural portion represented by the formula (1) solely as in the comparative compounds EM-1 to EM-3.
- a light emitting layer material containing a polycyclic aromatic compound represented by the formula (1) particularly an optimum light emission in combination with the polycyclic aromatic compound represented by the formula (1)
- organic electroluminescent device 101 substrate 102 anode 103 hole injection layer 104 hole transport layer 105 light emitting layer 106 electron transport layer 107 electron injection layer 108 cathode
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Abstract
Description
下記一般式(1)で表される多環芳香族化合物。
X1およびX2は、それぞれ独立して、>O、>Sまたは>Seであり、
R1、R2、R3、R4、R5、R6、R7、R8、R9、R10およびR11は、それぞれ独立して、水素、アルキル、またはアルキルで置換されていてもよいアリールであり、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環を形成していてもよく、形成されたアリール環における少なくとも1つの水素はアルキルで置換されていてもよく、
R1~R11のうちの少なくとも1つは、それぞれ独立して、下記式(Z-1)、式(Z-2)、式(Z-3)、式(Z-4)、式(Z-5)または式(Z-6)で表される基であり、
上記式(Z-1)~式(Z-6)中のArは、それぞれ独立して、下記式(Ar-1)、式(Ar-2)、式(Ar-3)、式(Ar-4)、式(Ar-5)、式(Ar-6)、式(Ar-7)、式(Ar-8)、式(Ar-9)、式(Ar-10)、式(Ar-11)または式(Ar-12)で表される基であり、
上記式(Ar-1)~式(Ar-12)中、Xは、それぞれ独立して、水素、炭素数1~4のアルキル、炭素数1~4のアルキルで置換されていてもよい炭素数6~18のアリール、または炭素数1~4のアルキルで置換されていてもよい炭素数2~18のヘテロアリールであり、A1とA2は、共に、水素であるか、または互いに結合してスピロ環を形成してもよく、式(Ar-1)および式(Ar-2)中の「-Xn」は、n個のXがそれぞれ独立して任意の位置に結合することを示し、nは1~4の整数であり、
上記式(1)で表される化合物における少なくとも1つの水素は重水素で置換されていてもよい。)
上記式(1)中、
X1およびX2は、それぞれ独立して、>O、>Sまたは>Seであり、
R1~R11は、それぞれ独立して、水素、炭素数1~12のアルキル、または炭素数1~12のアルキルで置換されていてもよい炭素数6~24のアリールであり、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共に炭素数10~20のアリール環を形成していてもよく、形成されたアリール環における少なくとも1つの水素は炭素数1~12のアルキルで置換されていてもよく、
R1~R11のうちの1つまたは2つは、それぞれ独立して、上記式(Z-1)、式(Z-2)、式(Z-3)、式(Z-4)、式(Z-5)または式(Z-6)で表される基であり、
上記式(Z-1)~式(Z-6)中のArは、それぞれ独立して、上記式(Ar-1)、式(Ar-2)、式(Ar-3)、式(Ar-4)、式(Ar-5)、式(Ar-6)、式(Ar-7)、式(Ar-8)、式(Ar-9)、式(Ar-10)、式(Ar-11)または式(Ar-12)で表される基であり、
上記式(Ar-1)~式(Ar-12)中、Xは、それぞれ独立して、水素、炭素数1~4のアルキル、炭素数1~4のアルキルで置換されていてもよい炭素数6~18のアリール、または炭素数1~4のアルキルで置換されていてもよい炭素数4~16のヘテロアリールであり、A1とA2は、共に、水素であるか、または互いに結合してスピロ環を形成してもよく、式(Ar-1)および式(Ar-2)中の「-Xn」は、n個のXがそれぞれ独立して任意の位置に結合することを示し、nは1~4の整数であり、
上記式(1)で表される化合物における少なくとも1つの水素は重水素で置換されていてもよい、
項1に記載する、多環芳香族化合物。
上記式(1)中、
X1およびX2は、>Oであり、
R1~R11は、それぞれ独立して、水素、炭素数1~6のアルキル、または炭素数1~6のアルキルで置換されていてもよい炭素数6~18のアリールであり、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共に炭素数10~18のアリール環を形成していてもよく、形成されたアリール環における少なくとも1つの水素は炭素数1~6のアルキルで置換されていてもよく、
R1~R11のうちの1つまたは2つは、それぞれ独立して、上記式(Z-1)、式(Z-2)、式(Z-3)、式(Z-4)、式(Z-5)または式(Z-6)で表される基であり、
上記式(Z-1)~式(Z-6)中のArは、それぞれ独立して、下記式(Ar-1-1)、式(Ar-1-2)、式(Ar-2-1)、式(Ar-2-2)、式(Ar-2-3)、式(Ar-3)、式(Ar-4-1)、式(Ar-5-1)、式(Ar-5-2)、式(Ar-5-3)、式(Ar-6)、式(Ar-7)、式(Ar-8)、式(Ar-9)、式(Ar-10)、式(Ar-11)または式(Ar-12)で表される基であり、
項1に記載する、多環芳香族化合物。
項1~4のいずれかに記載する多環芳香族化合物を含有する、有機デバイス用材料。
前記有機デバイス用材料が、有機電界発光素子用材料、有機電界効果トランジスタ用材料または有機薄膜太陽電池用材料である、項5に記載する有機デバイス用材料。
発光層用材料である、項6に記載する有機電界発光素子用材料。
さらに、下記一般式(2)で表される多環芳香族化合物および下記一般式(2)で表される構造を複数有する多環芳香族化合物の多量体の少なくとも1つを含有する、項7に記載する発光層用材料。
A環、B環およびC環は、それぞれ独立して、アリール環またはヘテロアリール環であり、これらの環における少なくとも1つの水素は置換されていてもよく、
X1およびX2はそれぞれ独立して>Oまたは>N-Rであり、前記>N-RのRは置換されていてもよいアリール、置換されていてもよいヘテロアリールまたはアルキルであり、また、前記N-RのRは連結基または単結合により前記A環、B環および/またはC環と結合していてもよく、そして、
式(2)で表される化合物または構造における少なくとも1つの水素がハロゲン、シアノまたは重水素で置換されていてもよい。)
陽極および陰極からなる一対の電極と、該一対の電極間に配置され、項7または8に記載する発光層用材料を含有する発光層とを有する、有機電界発光素子。
さらに、前記陰極と該発光層との間に配置される電子輸送層および/または電子注入層を有し、該電子輸送層および電子注入層の少なくとも1つは、ボラン誘導体、ピリジン誘導体、フルオランテン誘導体、BO系誘導体、アントラセン誘導体、ベンゾフルオレン誘導体、ホスフィンオキサイド誘導体、ピリミジン誘導体、カルバゾール誘導体、トリアジン誘導体、ベンゾイミダゾール誘導体、フェナントロリン誘導体、およびキノリノール系金属錯体からなる群から選択される少なくとも1つを含有する、項9に記載する有機電界発光素子。
前記電子輸送層および/または電子注入層が、さらに、アルカリ金属、アルカリ土類金属、希土類金属、アルカリ金属の酸化物、アルカリ金属のハロゲン化物、アルカリ土類金属の酸化物、アルカリ土類金属のハロゲン化物、希土類金属の酸化物、希土類金属のハロゲン化物、アルカリ金属の有機錯体、アルカリ土類金属の有機錯体および希土類金属の有機錯体からなる群から選択される少なくとも1つを含有する、項10に記載の有機電界発光素子。
項9~11のいずれかに記載する有機電界発光素子を備えた表示装置。
項9~11のいずれかに記載する有機電界発光素子を備えた照明装置。
一般式(1)で表される多環芳香族化合物は、基本的には、a環とb環およびc環とを結合基(X1およびX2)で結合させることで第1中間体を製造し(第1反応)、その後にa環にボロン酸エステル基を導入し(第2中間体)、さらに任意にこれを加水分解することでそのボロン酸(第2中間体)を製造した後(第2反応)、この第2中間体(ボロン酸またはボロン酸エステル)に塩化アルミニウムのようなルイス酸を反応させることで、製造することができる(第3反応)。
一般式(2)で表される多環芳香族化合物および一般式(2)で表される構造を複数有する多環芳香族化合物の多量体は、一般式(1)で表される多環芳香族化合物と組み合わせて発光層用材料として用いることができ、基本的にはドーパントとして機能する。当該多環芳香族化合物およびその多量体は、好ましくは、下記一般式(2’)で表される多環芳香族化合物、または下記一般式(2’)で表される構造を複数有する多環芳香族化合物の多量体である。
なお、一般式(2)や一般式(2’)の化合物およびその多量体は、一般式(1)で表される多環芳香族化合物とは異なる化合物であり、一般式(1)で表される多環芳香族化合物は一般式(2)や一般式(2’)の定義から除かれる。
A環、B環およびC環は、それぞれ独立して、アリール環またはヘテロアリール環であり、これらの環における少なくとも1つの水素は置換されていてもよく、
X1およびX2はそれぞれ独立して>Oまたは>N-Rであり、前記>N-RのRは置換されていてもよいアリール、置換されていてもよいヘテロアリールまたはアルキルであり、また、前記N-RのRは連結基または単結合により前記A環、B環および/またはC環と結合していてもよく、そして、
式(2)で表される化合物または構造における少なくとも1つの水素がハロゲン、シアノまたは重水素で置換されていてもよい。
R1からR11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1からR11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1およびX2はそれぞれ独立して>N-Rであり、前記>N-RのRは炭素数6~12のアリール、炭素数2~15のヘテロアリールまたは炭素数1~6のアルキルであり、また、前記>N-RのRは-O-、-S-、-C(-R)2-または単結合により前記a環、b環および/またはc環と結合していてもよく、前記-C(-R)2-のRは炭素数1~6のアルキルであり、そして、
式(2’)で表される化合物における少なくとも1つの水素がハロゲンまたは重水素で置換されていてもよい。
この規定は、下記式(2’-3-1)で表される、X1やX2が縮合環B’および縮合環C’に取り込まれた環構造を有する化合物で表現できる。すなわち、例えば一般式(2’)におけるb環(またはc環)であるベンゼン環に対してX1(またはX2)を取り込むようにして他の環が縮合して形成されるB’環(またはC’環)を有する化合物である。この化合物は、例えば後述する具体的化合物として列挙した、式(2-451)~式(2-462)で表されるような化合物および式(2-1401)~式(2-1460)で表されるような化合物に対応し、形成されてできた縮合環B’(または縮合環C’)は例えばフェノキサジン環、フェノチアジン環またはアクリジン環である。
また、上記規定は、下記式(2’-3-2)や式(2’-3-3)で表される、X1および/またはX2が縮合環A’に取り込まれた環構造を有する化合物でも表現できる。すなわち、例えば一般式(2’)におけるa環であるベンゼン環に対してX1(および/またはX2)を取り込むようにして他の環が縮合して形成されるA’環を有する化合物である。この化合物は、例えば後述する具体的化合物として列挙した式(2-471)~式(2-479)で表されるような化合物に対応し、形成されてできた縮合環A’は例えばフェノキサジン環、フェノチアジン環またはアクリジン環である。なお、下記式(2’-3-1)、式(2’-3-2)および式(2’-3-3)中のR1~R11、a、b、c、X1およびX2の定義は一般式(2’)における定義と同じである。
R1、R3、R4~R7、R8~R11およびR12~R15は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1は-O-または>N-Rであり、前記>N-RのRは炭素数6~12のアリール、炭素数2~15のヘテロアリールまたは炭素数1~6のアルキルであり、これらにおける少なくとも1つの水素は炭素数6~12のアリール、炭素数2~15のヘテロアリールまたは炭素数1~6のアルキルで置換されていてもよく、
Z1およびZ2は、それぞれ独立して、アリール、ヘテロアリール、ジアリールアミノ、アリールオキシ、アリール置換アルキル、水素、アルキルまたはアルコキシであり、これらにおける少なくとも1つの水素はアルキルで置換されていてもよく、Z1が、アルキルで置換されていてもよいフェニル、アルキルで置換されていてもよいm-ビフェニリル、アルキルで置換されていてもよいp-ビフェニリル、アルキルで置換されていてもよい単環系ヘテロアリール、アルキルで置換されていてもよいジフェニルアミノ、水素、アルキルまたはアルコキシである場合は、Z2は水素、アルキルまたはアルコキシであることはなく、そして、
式(2”)で表される化合物における少なくとも1つの水素がハロゲンまたは重水素で置換されていてもよい。
すなわち、Z1として、アリールの中でもフェニル基、m-ビフェニリル基およびp-ビフェニリル基、ヘテロアリールの中でも単環系ヘテロアリール基(ピリジル基などの1つの環で構成されるヘテロアリール基)、ジアリールアミノの中でもジフェニルアミノ基、水素、アルキル基およびアルコキシ基、そしてこれらの基における少なくとも1つの水素がアルキルで置換された基は、単独では本願における嵩高い置換基としての役割を有さないため、置換基Z2を嵩高くする必要がある。Z2としては、水素、アルキル基およびアルコキシ基、そしてこれらの基における少なくとも1つの水素がアルキルで置換された基が嵩高くないため、これらのZ1とZ2との組み合わせは本願からは除かれる。
Z1は、好ましくは、o-ビフェニリル基、o-ナフチルフェニル基(フェニル基のオルト位に1-または2-ナフチル基が置換した基)、フェニルナフチルアミノ基、ジナフチルアミノ基、フェニルオキシ基、トリフェニルメチル基(トリチル基)、およびこれらの基の少なくとも1つがアルキル(例えばメチル、エチル、i-プロピルまたはt-ブチル、好ましくはメチルまたはt-ブチル、より好ましくはt-ブチル)で置換された基である。
Z2は、好ましくは、フェニル基、1-または2-ナフチル基、およびこれらの基の少なくとも1つがアルキル(例えばメチル、エチル、i-プロピルまたはt-ブチル、好ましくはメチルまたはt-ブチル、より好ましくはt-ブチル)で置換された基である。
なお、式中のRはアルキルであり、直鎖および分枝鎖のいずれでもよく、例えば、炭素数1~24の直鎖アルキルまたは炭素数3~24の分枝鎖アルキルがあげられる。炭素数1~18のアルキル(炭素数3~18の分枝鎖アルキル)が好ましく、炭素数1~12のアルキル(炭素数3~12の分枝鎖アルキル)がより好ましく、炭素数1~6のアルキル(炭素数3~6の分枝鎖アルキル)がさらに好ましく、炭素数1~4のアルキル(炭素数3~4の分枝鎖アルキル)が特に好ましい。また、Rとしては他にフェニルがあげられる。
また、「PhO-」はフェニルオキシ基であり、このフェニルは直鎖または分枝鎖のアルキルで置換されていてもよく、例えば、炭素数1~24の直鎖アルキルまたは炭素数3~24の分枝鎖アルキル、炭素数1~18のアルキル(炭素数3~18の分枝鎖アルキル)、炭素数1~12のアルキル(炭素数3~12の分枝鎖アルキル)、炭素数1~6のアルキル(炭素数3~6の分枝鎖アルキル)、炭素数1~4のアルキル(炭素数3~4の分枝鎖アルキル)で置換されていてもよい。
具体的には、以下の化合物があげられる。下記式中のRはそれぞれ独立して炭素数1~12のアルキルまたは炭素数6~10のアリール、好ましくは炭素数1~4のアルキルまたはフェニルであり、nはそれぞれ独立して0~2、好ましくは1である。
一般式(2)や(2’)で表される多環芳香族化合物およびその多量体は、基本的には、まずA環(a環)とB環(b環)およびC環(c環)とを結合基(X1やX2を含む基)で結合させることで中間体を製造し(第1反応)、その後に、A環(a環)、B環(b環)およびC環(c環)を結合基(中心原子「B」(ホウ素)を含む基)で結合させることで最終生成物を製造することができる(第2反応)。
本発明に係る多環芳香族化合物は、有機デバイス用材料として用いることができる。有機デバイスとしては、例えば、有機電界発光素子、有機電界効果トランジスタまたは有機薄膜太陽電池などが挙げられる。
一般式(1)で表される多環芳香族化合物は、例えば、有機電界発光素子の材料として用いることができる。以下に、本実施形態に係る有機EL素子について図面に基づいて詳細に説明する。図1は、本実施形態に係る有機EL素子を示す概略断面図である。
図1に示された有機電界発光素子100は、基板101と、基板101上に設けられた陽極102と、陽極102の上に設けられた正孔注入層103と、正孔注入層103の上に設けられた正孔輸送層104と、正孔輸送層104の上に設けられた発光層105と、発光層105の上に設けられた電子輸送層106と、電子輸送層106の上に設けられた電子注入層107と、電子注入層107の上に設けられた陰極108とを有する。
基板101は、有機電界発光素子100の支持体であり、通常、石英、ガラス、金属、プラスチックなどが用いられる。基板101は、目的に応じて板状、フィルム状、またはシート状に形成され、例えば、ガラス板、金属板、金属箔、プラスチックフィルム、プラスチックシートなどが用いられる。なかでも、ガラス板、および、ポリエステル、ポリメタクリレート、ポリカーボネート、ポリスルホンなどの透明な合成樹脂製の板が好ましい。ガラス基板であれば、ソーダライムガラスや無アルカリガラスなどが用いられ、また、厚みも機械的強度を保つのに十分な厚みがあればよいので、例えば、0.2mm以上あればよい。厚さの上限値としては、例えば、2mm以下、好ましくは1mm以下である。ガラスの材質については、ガラスからの溶出イオンが少ない方がよいので無アルカリガラスの方が好ましいが、SiO2などのバリアコートを施したソーダライムガラスも市販されているのでこれを使用することができる。また、基板101には、ガスバリア性を高めるために、少なくとも片面に緻密なシリコン酸化膜などのガスバリア膜を設けてもよく、特にガスバリア性が低い合成樹脂製の板、フィルムまたはシートを基板101として用いる場合にはガスバリア膜を設けるのが好ましい。
陽極102は、発光層105へ正孔を注入する役割を果たす。なお、陽極102と発光層105との間に正孔注入層103および/または正孔輸送層104が設けられている場合には、これらを介して発光層105へ正孔を注入することになる。
正孔注入層103は、陽極102から移動してくる正孔を、効率よく発光層105内または正孔輸送層104内に注入する役割を果たす。正孔輸送層104は、陽極102から注入された正孔または陽極102から正孔注入層103を介して注入された正孔を、効率よく発光層105に輸送する役割を果たす。正孔注入層103および正孔輸送層104は、それぞれ、正孔注入・輸送材料の一種または二種以上を積層、混合するか、正孔注入・輸送材料と高分子結着剤の混合物により形成される。また、正孔注入・輸送材料に塩化鉄(III)のような無機塩を添加して層を形成してもよい。
発光層105は、電界を与えられた電極間において、陽極102から注入された正孔と、陰極108から注入された電子とを再結合させることにより発光する層である。発光層105を形成する材料としては、正孔と電子との再結合によって励起されて発光する化合物(発光性化合物)であればよく、安定な薄膜形状を形成することができ、かつ、固体状態で強い発光(蛍光)効率を示す化合物であるのが好ましい。例えば、ホスト材料として上記一般式(1)で表される多環芳香族化合物と、ドーパント材料として上記一般式(2)で表される多環芳香族化合物またはその多量体を含有する発光層用材料を用いることができる。
また、特開2003-347056号公報、および特開2001-307884号公報などに記載されたスチルベン構造を有するアミンを用いてもよい。
また、特開平11-97178号公報、特開2000-133457号公報、特開2000-26324号公報、特開2001-267079号公報、特開2001-267078号公報、特開2001-267076号公報、特開2000-34234号公報、特開2001-267075号公報、および特開2001-217077号公報などに記載されたペリレン誘導体を用いてもよい。
また、国際公開第2000/40586号パンフレットなどに記載されたボラン誘導体を用いてもよい。
また、特開2006-156888号公報などに記載された芳香族アミン誘導体を用いてもよい。
また、特開2004-43646号公報、特開2001-76876号公報、および特開平6-298758号公報などに記載されたクマリン誘導体を用いてもよい。
電子注入層107は、陰極108から移動してくる電子を、効率よく発光層105内または電子輸送層106内に注入する役割を果たす。電子輸送層106は、陰極108から注入された電子または陰極108から電子注入層107を介して注入された電子を、効率よく発光層105に輸送する役割を果たす。電子輸送層106および電子注入層107は、それぞれ、電子輸送・注入材料の一種または二種以上を積層、混合するか、電子輸送・注入材料と高分子結着剤の混合物により形成される。
ボラン誘導体は、例えば下記一般式(ETM-1)で表される化合物であり、詳細には特開2007-27587号公報に開示されている。
具体的な「シクロアルキル」としては、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、メチルシクロペンチル、シクロヘプチル、メチルシクロヘキシル、シクロオクチルまたはジメチルシクロヘキシルなどが挙げられる。
ホスフィンオキサイド誘導体は、例えば下記式(ETM-7-1)で表される化合物である。詳細は国際公開第2013/079217号公報にも記載されている。
R6は、CN、置換または無置換の、炭素数1~20のアルキル、炭素数1~20のヘテロアルキル、炭素数6~20のアリール、炭素数5~20のヘテロアリール、炭素数1~20のアルコキシまたは炭素数6~20のアリールオキシであり、
R7およびR8は、それぞれ独立して、置換または無置換の、炭素数6~20のアリールまたは炭素数5~20のヘテロアリールであり、
R9は酸素または硫黄であり、
jは0または1であり、kは0または1であり、rは0~4の整数であり、qは1~3の整数である。
ピリミジン誘導体は、例えば下記式(ETM-8)で表される化合物であり、好ましくは下記式(ETM-8-1)で表される化合物である。詳細は国際公開第2011/021689号公報にも記載されている。
カルバゾール誘導体は、例えば下記式(ETM-9)で表される化合物、またはそれが単結合などで複数結合した多量体である。詳細は米国公開公報2014/0197386号公報に記載されている。
トリアジン誘導体は、例えば下記式(ETM-10)で表される化合物であり、好ましくは下記式(ETM-10-1)で表される化合物である。詳細は米国公開公報2011/0156013号公報に記載されている。
キノリノール系金属錯体は、例えば下記一般式(ETM-13)で表される化合物である。
チアゾール誘導体は、例えば下記式(ETM-14-1)で表される化合物である。
陰極108は、電子注入層107および電子輸送層106を介して、発光層105に電子を注入する役割を果たす。
以上の正孔注入層、正孔輸送層、発光層、電子輸送層および電子注入層に用いられる材料は単独で各層を形成することができるが、高分子結着剤としてポリ塩化ビニル、ポリカーボネート、ポリスチレン、ポリ(N-ビニルカルバゾール)、ポリメチルメタクリレート、ポリブチルメタクリレート、ポリエステル、ポリスルホン、ポリフェニレンオキサイド、ポリブタジエン、炭化水素樹脂、ケトン樹脂、フェノキシ樹脂、ポリアミド、エチルセルロース、酢酸ビニル樹脂、ABS樹脂、ポリウレタン樹脂などの溶剤可溶性樹脂や、フェノール樹脂、キシレン樹脂、石油樹脂、ユリア樹脂、メラミン樹脂、不飽和ポリエステル樹脂、アルキド樹脂、エポキシ樹脂、シリコーン樹脂などの硬化性樹脂などに分散させて用いることも可能である。
有機電界発光素子を構成する各層は、各層を構成すべき材料を蒸着法、抵抗加熱蒸着、電子ビーム蒸着、スパッタリング、分子積層法、印刷法、スピンコート法またはキャスト法、コーティング法などの方法で薄膜とすることにより、形成することができる。このようにして形成された各層の膜厚については特に限定はなく、材料の性質に応じて適宜設定することができるが、通常2nm~5000nmの範囲である。膜厚は通常、水晶発振式膜厚測定装置などで測定できる。蒸着法を用いて薄膜化する場合、その蒸着条件は、材料の種類、膜の目的とする結晶構造および会合構造などにより異なる。蒸着条件は一般的に、蒸着用ルツボの加熱温度+50~+400℃、真空度10-6~10-3Pa、蒸着速度0.01~50nm/秒、基板温度-150~+300℃、膜厚2nm~5μmの範囲で適宜設定することが好ましい。
また、本発明は、有機電界発光素子を備えた表示装置または有機電界発光素子を備えた照明装置などにも応用することができる。
有機電界発光素子を備えた表示装置または照明装置は、本実施形態にかかる有機電界発光素子と公知の駆動装置とを接続するなど公知の方法によって製造することができ、直流駆動、パルス駆動、交流駆動など公知の駆動方法を適宜用いて駆動することができる。
本発明に係る多環芳香族化合物は、上述した有機電界発光素子の他に、有機電界効果トランジスタまたは有機薄膜太陽電池などの作製に用いることができる。
(1)基板/ゲート電極/絶縁体層/ソース電極・ドレイン電極/有機半導体活性層
(2)基板/ゲート電極/絶縁体層/有機半導体活性層/ソース電極・ドレイン電極
(3)基板/有機半導体活性層/ソース電極・ドレイン電極/絶縁体層/ゲート電極
(4)基板/ソース電極・ドレイン電極/有機半導体活性層/絶縁体層/ゲート電極
このように構成された有機電界効果トランジスタは、アクティブマトリックス駆動方式の液晶ディスプレイや有機エレクトロルミネッセンスディスプレイの画素駆動スイッチング素子などとして適用できる。
1H-NMR(400MHz,CDCl3):δ=8.88~8.85(m,1H)、8.83~8.80(m,1H)、7.83~7.65(m,7H)、7.63~7.50(m,7H)、7.48~7.42(m,1H)、7.40~7.34(m,4H)、7.32~7.24(m,2H).
MS(ACPI) m/z=523(M+H)
1H-NMR(400MHz,CDCl3):δ=8.81~8.79(m,1H)、8.51~8.47(m,1H)、7.90~7.74(m,7H)、7.67~7.51(m,7H)、7.40~7.33(m,5H)、7.32~7.28(m,1H)、7.21~7.16(m,1H).
1H-NMR(400MHz,CDCl3):δ=8.69(dd,2H)、7.79(t,1H)、7.70(ddd,2H)、7.54(dt,2H)、7.38(ddd,2H)、7.22(d,2H).
1H-NMR(400MHz,CDCl3):δ=8.80~8.70(m,2H)、7.90~7.85(m,1H)、7.82~7.75(m,3H)、7.75~7.53(m,7H)、7.53~7.43(m,4H)、7.37~7.26(m,5H)、6.92~6.88(m,1H).
1H-NMR(400MHz,CDCl3):δ=8.97~8.93(m,1H)、8.87~8.83(m,1H)、7.80~7.73(m,4H)、7.69~7.44(m、11H)、7.36~7.26(m,4H)、7.16~7.12(m,1H)、6.53~6.50(m,1H).
1H-NMR(400MHz,CDCl3):δ=8.82~8.78(m,2H)、7.79~7.72(m,6H)、7.67~7.52(m,7H)、7.49~7.43(m,2H)、7.42(s,2H)、7.39~7.34(m,4H).
1H-NMR(400MHz,CDCl3):δ=8.84~8.82(m,1H)、8.79~8.76(m,1H)、8.04~7.96(m,3H)、7.86~7.70(m,7H)、7.66~7.53(m,6H)、7.52~7.48(m,2H)、7.46~7.33(m,5H)、7.31~7.26(m,2H).
1H-NMR(400MHz,CDCl3):δ=8.82~8.78(m,2H)、8.00~7.90(m,5H)、7.85~7.80(m,1H)、7.77~7.72(m,3H)、7.67~7.51(m,9H)、7.47~7.35(m,5H)、7.29~7.23(m,2H).
1H-NMR(400MHz,CDCl3):δ=8.76~8.68(m,2H)、7.99~7.96(m,1H)、7.93~7.87(m,2H)、7.82~7.68(m,8H)、7.64~7.49(m,7H)、7.42~7.33(m,5H)、7.26~7.19(m,2H).
1H-NMR(400MHz,CDCl3):δ=9.08~9.05(m,1H)、8.87~8.83(m,1H)、8.14~8.10(m,1H)、8.00~7.96(m,2H)、7.87~7.81(m,3H)、7.78~7.70(m,4H)、7.67~7.53(m,6H)、7.53~7.44(m,3H)、7.41~7.33(m,4H)、7.31~7.26(m,2H).
MS(ACPI) m/z=775(M+H)
1H-NMR(400MHz,CDCl3):δ=8.64~8.59(m,2H)、7.98~7.96(m,1H)、7.91~7.87(m,3H)、7.81~7.66(m,3H)、7.60~7.57(m,1H)、7.54~7.46(m,2H)、7.42~7.33(m,4H)、7.22~7.10(m,6H)、6.82~6.74(m,3H).
1H-NMR(400MHz,CDCl3):δ=8.90~8.85(m,1H)、8.82~8.79(m,1H)、7.88~7.81(m,4H)、7.78~7.73(m,1H)、7.68~7.64(m,1H)、7.62~7.58(m,1H)、7.47~7.37(m,3H)、7.32~7.26(m,3H)、7.20~7.13(m,4H)、7.06~6.98(m,2H)、6.87~6.81(m,2H)、6.79~6.75(m,1H)、6.73~6.69(m,1H).
1H-NMR(400MHz,CDCl3):δ=9.11~9.08(m,1H)、8.88~8.72(m,9H)、8.06~8.02(m,2H)、7.91~7.81(m,2H)、7.77~7.65(m,7H)、7.60~7.57(m,1H)、7.46~7.41(m,1H)、7.32~7.24(m,2H).
1H-NMR(400MHz,CDCl3):δ=9.3(s,1H)、8.9(d,1H)、8.8(dd,2H)、8.2(d,1H)、7.8(d,1H)、7.7(m,4H)、7.6(t,1H)、7.6~7.5(m,5H)、7.4(t,3H)、7.4(s,2H).
1H-NMR(400MHz,CDCl3):δ=8.8(d,1H)、8.7(dd,1H)、8.3(s,1H)、8.2~8.1(m,2H)、8.1(s,1H)、8.0(dd,1H)、8.0(d,1H)、7.8(m,2H)、7.8~7.7(m,5H)、7.7~7.6(m,3H)、7.6(m,2H)、7.5(m,2H)、7.4(m,1H)、7.4~7.3(m,4H)、7.3(m,2H).
1H-NMR(400MHz,CDCl3):δ=8.9(m,1H)、8.8(m,1H)、8.4(s,1H)、8.2(d,1H)、8.1~8.0(m,4H)、7.9~7.8(m,2H)、7.8~7.5(m,11H)、7.5~7.4(m,1H)、7.4~7.3(m,4H)、7.3(m,3H).
1H-NMR(400MHz,CDCl3):δ=8.7(dd,2H)、8.2(d,1H)、7.8~7.7(m,5H)、7.7~7.5(m,12H)、7.5(m,1H)、7.4(m,2H)、7.4~7.3(m,6H).
1H-NMR(400MHz,CDCl3):δ=8.75~8.44(m,1H)、7.88~7.83(m,1H)、7.88~7.82(m,1H)、7.78~7.42(m,12H)、7.35~6.85(m,12H).
1H-NMR(400MHz,CDCl3):δ=8.90~8.80(m,1H)、8.58~8.49(m,1H)、8.11~8.00(m,2H)、7.93~7.80m,6H)、7.76~7.47(m,8H)、7.37~7.26(m,7H).
1H-NMR(400MHz,CDCl3):δ=8.84~8.81(m,1H)、8.52~8.49(m,1H)、8.14~8.02(m,3H)、7.98~7.92(m,1H)、7.90~7.75(m,7H)、7.70~7.60(m,4H)、7.57~7.53(m,1H)、7.39~7.27(m,6H)、7.22~7.17(m,1H).
1H-NMR(400MHz,CDCl3):δ=8.88~8.85(m,1H)、8.56~8.53(m,1H)、8.08~8.06(m,1H)、7.94~7.90(m,1H)、7.88~7.84(m,1H)、7.82~7.71(m,5H)、7.70~7.52(m,12H)、7.43~7.32(m,3H)、7.26~7.22(m,2H).
1H-NMR(400MHz,CDCl3):δ=8.83~8.80(m,1H)、8.51~8.48(m,1H)、8.13~8.09(m,1H)、7.96~7.93(m,1H)、7.90~7.74(m,8H)、7.70~7.60(m,3H)、7.57~7.50(m,2H)、7.41~7.28(m,7H)、7.22~7.16(m,1H).
1H-NMR(400MHz,CDCl3):δ=8.96~8.92(m,1H)、8.74~8.72(m,1H)、8.50~8.45(m,2H)、8.16~8.12(m,1H)、7.86~7.80(m,2H)、7.73~7.63(m,4H)、7.55~7.49(m,4H)、7.38~7.22(m,14H).
1H-NMR(400MHz,CDCl3):δ=9.34(s,1H)、8.96~8.93(m,1H)、8.74(s,1H)、8.47~8.43(m,1H)、8.25~8.22(m,1H)、7.89~7.71(m,6H)、7.66~7.43(m,7H)、7.35~7.27(m,2H)、7.17~7.12(m,1H).
1H-NMR(400MHz,CDCl3):δ=8.81~8.77(m,2H)、8.10~8.00(m,2H)、7.82~7.70(m,5H)、7.63~7.57(m,3H)、7.53~7.43(m,7H)、7.35~7.19(m,6H).
1H-NMR(400MHz,CDCl3):δ=8.79~8.75(m,2H)、7.76~7.63(m,8H)、7.60~7.53(m,3H)、7.50~7.41(m,3H)、7.37~7.35(m,1H)、7.32~7.23(m,5H)、7.02~6.99(m,2H)、6.95~6.87(m,3H).
1H-NMR(400MHz,CDCl3):δ=8.21~8.17(m,2H)、7.96~7.92(m,2H)、7.87~7.83(m,2H)、7.78~7.71(m,6H)、7.65~7.43(m,9H)、7.37~7.30(m,4H)、7.17~7.12(m,2H).
1H-NMR(400MHz,1,1,2,2-tetrachloroethane-d2、80oC):δ=7.3~7.4(m,4H)、7.5(dd,4H)、7.6(s,4H)、7.7(m,4H)、8.6(dd,4H).
1H-NMR:δ=8.92(s,1H)、8.86(s,1H)、7.68(s,1H)、7.67(d,2H)、7.64(d,1H)、7.48(dd,1H)、7.43(dd,1H)、7.27~7.14(m,5H)、7.00~6.98(m,3H)、6.71(d,1H)、6.65(d,1H)、6.05(s,1H)、5.90(s,1H)、2.17(s,3H)、1.48(s,9H)、1.46(s,9H)、1.45(s,9H)、1.43(s,9H).
1H-NMR:δ=1.4(s,9H)、1.4(s,9H)、1.5(s,9H)、1.5(s,9H)、1.9(s,6H)、6.1(d,1H)、6.2(d,1H)、6.6(s,1H)、6.7(d,1H)、6.8(d,1H)、7.2~7.3(m,6H)、7.5(m,2H)、7.6(m,1H)、7.6~7.7(m,3H)、8.9(d,1H)、8.9(d,1H).
1H-NMR:δ=1.1(s,9H)、1.4(s,9H)、1.5(s,9H)、1.5(s,9H)、1.5(s,9H)、6.1(d,1H)、6.2(d,1H)、6.7(d,1H)、6.8(d,1H)、7.0(d,1H)、7.1(d,1H)、7.2~7.3(m,7H)、7.5(dd,1H)、7.5(dd,1H)、7.7(m,3H)、8.9(d,1H)、8.9(d,1H).
1H-NMR:δ=1.1(s,9H)、1.4(s,9H)、1.5(s,9H)、1.5(s,9H)、1.5(s,9H)、2.2(s,3H)、5.9(s,1H)、6.1(s,1H)、6.7(m,2H)、7.0(d,2H)、7.1(d,2H)、7.2(d,1H)、7.3(m,2H)、7.4(m,1H)、7.5(m,1H)、7.6(dd,1H)、7.7(m,3H)、8.9(d,1H)、8.9(d,1H).
1H-NMR:δ=1.0(s,18H)、1.5(s,9H)、1.6(s,9H)、1.6(s,9H)、1.6(s,9H)、6.2(d,1H)、6.4(d,1H)、6.8(d,1H)、6.9(d,2H)、7.0(d,1H)、7.0(m,1H)、7.3~7.4(m,3H)、7.5(d,1H)、7.6(dd,1H)、7.6(m,1H)、7.8(m,4H)、8.9(d,1H)、9.0(d,1H).
1H-NMR:δ=1.0(s,9H)、1.4(s,9H)、1.5(s,18H)、1.5(s,9H)、6.0(s,1H)、6.1(s,1H)、6.7(d,1H)、6.9(d,1H)、7.0(m,3H)、7.1~7.2(m,2H)、7.3(m,3H)、7.5(m,2H)、7.6~7.7(m,4H)、8.9(d,1H)、8.9(d,1H).
1H-NMR(400MHz,CDCl3):δ=8.93(s,1H)、8.89(s,1H)、7.68~7.61(m,4H)、7.50~7.47(m,2H)、7.28~7.22(m,4H)、7.16(d,2H)、6.99~6.98(m,3H)、6.78(d,1H)、6.71(d,1H)、6.22(d,1H)、6.07(d,1H)、1.48(s,9H)、1.45(s,18H)、1.44(s,9H).
1H-NMR(500MHz,CDCl3):δ=1.47(s,36H)、2.17(s,3H)、5.97(s,2H)、6.68(d,2H)、7.28(d,4H、7.49(dd,2H)、7.67(d,4H)、8.97(d,2H).
1H-NMR(500MHz,CDCl3):δ=8.98~8.96(m,2H)、7.70~7.65(m,4H)、7.51~7.47(m,2H)、7.31~7.26(m,4H)、6.78~6.75(m,2H)、6.11(s,2H)、1.47~1.44(m,18H)、0.93(s,9H).
1H-NMR(500MHz,CDCl3):δ=9.20~8.60(m,2H)、7.65~7.20(m,8H)、7.20~7.05(m,7H)、6.85~6.50(m,10H)、6.20~5.20(m,2H)、1.46~1.44(m,36H).
1H-NMR(500MHz,CDCl3):δ=9.00~8.95(m,2H)、7.48~7.36(m,6H)、7.20~6.95(m,10H)、6.90~6.52(m,12H)、6.48~6.26(m,2H)、5.60~5.00(m,2H)、1.46(s,18H)、1.26(s,18H).
1H-NMR(500MHz,CDCl3):δ=8.95~8.88(m,2H)、7.71~7.64(m,3H)、7.61~7.56(m,1H)、7.50~7.43(m,2H)、7.28~7.20(m,3H)、7.11~7.07(m,2H)、7.01~6.97(m,2H)、6.85~6.80(m,1H)、6.76~6.72(m,1H)、6.16(s,1H)、6.05(s,1H)、1.48~1.43(m,27H)、1.11(s,9H)、0.97(s,9H).
1H-NMR(500MHz,CDCl3):δ=8.90~8.87(m,1H)、8.75~8.72(m,1H)、7.73~7.58(m,4H)、7.48~7.43(m,1H)、7.35~7.19(m,5H)、7.11~7.07(d,2H)、7.01~6.97(d,2H)、6.67~6.64(m,2H)、6.17(s,1H)、5.94(s,1H)、1.50~1.43(m,27H)、1.18(s,9H)、1.11(s,9H).
1H-NMR(500MHz,CDCl3):δ=8.96~8.95(m,2H)、7.47~7.42(m,6H)、7.15~7.10(m,4H)、6.77~6.74(m,2H)、5.56(s,2H)、1.46(m,9H)、1.33(s,9H).
スパッタリングにより180nmの厚さに製膜したITOを150nmまで研磨した、26mm×28mm×0.7mmのガラス基板((株)オプトサイエンス製)を透明支持基板とした。この透明支持基板を市販の蒸着装置(昭和真空(株)製)の基板ホルダーに固定し、HI、IL、HT-1、HT-2、化合物(1-1)、化合物(2-2619)、ET-1およびET-2をそれぞれ入れたモリブデン製蒸着用ボート、Liq、マグネシウムおよび銀をそれぞれ入れた窒化アルミニウム製蒸着用ボートを装着した。
ホスト材料及びドーパント材料を上記表に記載した材料に変更した以外は実施例A-1に準じて有機EL素子を作製し、同様にして有機EL特性を測定した。
スパッタリングにより180nmの厚さに製膜したITOを150nmまで研磨した、26mm×28mm×0.7mmのガラス基板((株)オプトサイエンス製)を透明支持基板とした。この透明支持基板を市販の蒸着装置(昭和真空(株)製)の基板ホルダーに固定し、HI、IL、HT-1、HT-2、化合物(1-1)、化合物(2-2619)、ET-1およびET-2をそれぞれ入れたタンタル製蒸着用ボート、Liq、LiFおよびアルミニウムをそれぞれ入れた窒化アルミニウム製蒸着用ボートを装着した。
ホスト材料及びドーパント材料を上記表に記載した材料に変更した以外は実施例B-1に準じて有機EL素子を作製し、同様にして有機EL特性を測定した。
スパッタリングにより180nmの厚さに製膜したITOを150nmまで研磨した、26mm×28mm×0.7mmのガラス基板((株)オプトサイエンス製)を透明支持基板とした。この透明支持基板を市販の蒸着装置(長州産業(株)製)の基板ホルダーに固定し、HI、IL、HT-1、HT-2、化合物(1-82)、化合物(2-2619)、ET-1およびET-2をそれぞれ入れたタンタル製蒸着用ボート、Liq、LiFおよびアルミニウムをそれぞれ入れた窒化アルミニウム製蒸着用ボートを装着した。
ホスト材料及びドーパント材料を上記表に記載した材料に変更した以外は実施例B-16に準じて有機EL素子を作製し、同様にして有機EL特性を測定した。
スパッタリングにより180nmの厚さに製膜したITOを150nmまで研磨した、26mm×28mm×0.7mmのガラス基板((株)オプトサイエンス製)を透明支持基板とした。この透明支持基板を市販の蒸着装置(昭和真空(株)製)の基板ホルダーに固定し、HI、IL、HT-1、HT-2、化合物(1-2)、化合物(2-166)、ET-1およびET-2をそれぞれ入れたタンタル製蒸着用ボート、Liq、LiFおよびアルミニウムをそれぞれ入れた窒化アルミニウム製蒸着用ボートを装着した。
ホスト材料及びドーパント材料を上記表に記載した材料に変更した以外は実施例C-1に準じて有機EL素子を作製し、同様にして有機EL特性を測定した。
101 基板
102 陽極
103 正孔注入層
104 正孔輸送層
105 発光層
106 電子輸送層
107 電子注入層
108 陰極
Claims (13)
- 下記一般式(1)で表される多環芳香族化合物。
X1およびX2は、それぞれ独立して、>O、>Sまたは>Seであり、
R1、R2、R3、R4、R5、R6、R7、R8、R9、R10およびR11は、それぞれ独立して、水素、アルキル、またはアルキルで置換されていてもよいアリールであり、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環を形成していてもよく、形成されたアリール環における少なくとも1つの水素はアルキルで置換されていてもよく、
R1~R11のうちの少なくとも1つは、それぞれ独立して、下記式(Z-1)、式(Z-2)、式(Z-3)、式(Z-4)、式(Z-5)または式(Z-6)で表される基であり、
上記式(Z-1)~式(Z-6)中のArは、それぞれ独立して、下記式(Ar-1)、式(Ar-2)、式(Ar-3)、式(Ar-4)、式(Ar-5)、式(Ar-6)、式(Ar-7)、式(Ar-8)、式(Ar-9)、式(Ar-10)、式(Ar-11)または式(Ar-12)で表される基であり、
上記式(Ar-1)~式(Ar-12)中、Xは、それぞれ独立して、水素、炭素数1~4のアルキル、炭素数1~4のアルキルで置換されていてもよい炭素数6~18のアリール、または炭素数1~4のアルキルで置換されていてもよい炭素数2~18のヘテロアリールであり、A1とA2は、共に、水素であるか、または互いに結合してスピロ環を形成してもよく、式(Ar-1)および式(Ar-2)中の「-Xn」は、n個のXがそれぞれ独立して任意の位置に結合することを示し、nは1~4の整数であり、
上記式(1)で表される化合物における少なくとも1つの水素は重水素で置換されていてもよい。) - 上記式(1)中、
X1およびX2は、それぞれ独立して、>O、>Sまたは>Seであり、
R1~R11は、それぞれ独立して、水素、炭素数1~12のアルキル、または炭素数1~12のアルキルで置換されていてもよい炭素数6~24のアリールであり、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共に炭素数10~20のアリール環を形成していてもよく、形成されたアリール環における少なくとも1つの水素は炭素数1~12のアルキルで置換されていてもよく、
R1~R11のうちの1つまたは2つは、それぞれ独立して、上記式(Z-1)、式(Z-2)、式(Z-3)、式(Z-4)、式(Z-5)または式(Z-6)で表される基であり、
上記式(Z-1)~式(Z-6)中のArは、それぞれ独立して、上記式(Ar-1)、式(Ar-2)、式(Ar-3)、式(Ar-4)、式(Ar-5)、式(Ar-6)、式(Ar-7)、式(Ar-8)、式(Ar-9)、式(Ar-10)、式(Ar-11)または式(Ar-12)で表される基であり、
上記式(Ar-1)~式(Ar-12)中、Xは、それぞれ独立して、水素、炭素数1~4のアルキル、炭素数1~4のアルキルで置換されていてもよい炭素数6~18のアリール、または炭素数1~4のアルキルで置換されていてもよい炭素数4~16のヘテロアリールであり、A1とA2は、共に、水素であるか、または互いに結合してスピロ環を形成してもよく、式(Ar-1)および式(Ar-2)中の「-Xn」は、n個のXがそれぞれ独立して任意の位置に結合することを示し、nは1~4の整数であり、
上記式(1)で表される化合物における少なくとも1つの水素は重水素で置換されていてもよい、
請求項1に記載する、多環芳香族化合物。 - 上記式(1)中、
X1およびX2は、>Oであり、
R1~R11は、それぞれ独立して、水素、炭素数1~6のアルキル、または炭素数1~6のアルキルで置換されていてもよい炭素数6~18のアリールであり、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共に炭素数10~18のアリール環を形成していてもよく、形成されたアリール環における少なくとも1つの水素は炭素数1~6のアルキルで置換されていてもよく、
R1~R11のうちの1つまたは2つは、それぞれ独立して、上記式(Z-1)、式(Z-2)、式(Z-3)、式(Z-4)、式(Z-5)または式(Z-6)で表される基であり、
上記式(Z-1)~式(Z-6)中のArは、それぞれ独立して、下記式(Ar-1-1)、式(Ar-1-2)、式(Ar-2-1)、式(Ar-2-2)、式(Ar-2-3)、式(Ar-3)、式(Ar-4-1)、式(Ar-5-1)、式(Ar-5-2)、式(Ar-5-3)、式(Ar-6)、式(Ar-7)、式(Ar-8)、式(Ar-9)、式(Ar-10)、式(Ar-11)または式(Ar-12)で表される基であり、
請求項1に記載する、多環芳香族化合物。 - 請求項1~4のいずれかに記載する多環芳香族化合物を含有する、有機デバイス用材料。
- 前記有機デバイス用材料が、有機電界発光素子用材料、有機電界効果トランジスタ用材料または有機薄膜太陽電池用材料である、請求項5に記載する有機デバイス用材料。
- 発光層用材料である、請求項6に記載する有機電界発光素子用材料。
- さらに、下記一般式(2)で表される多環芳香族化合物および下記一般式(2)で表される構造を複数有する多環芳香族化合物の多量体の少なくとも1つを含有する、請求項7に記載する発光層用材料。
A環、B環およびC環は、それぞれ独立して、アリール環またはヘテロアリール環であり、これらの環における少なくとも1つの水素は置換されていてもよく、
X1およびX2はそれぞれ独立して>Oまたは>N-Rであり、前記>N-RのRは置換されていてもよいアリール、置換されていてもよいヘテロアリールまたはアルキルであり、また、前記N-RのRは連結基または単結合により前記A環、B環および/またはC環と結合していてもよく、そして、
式(2)で表される化合物または構造における少なくとも1つの水素がハロゲン、シアノまたは重水素で置換されていてもよい。) - 陽極および陰極からなる一対の電極と、該一対の電極間に配置され、請求項7または8に記載する発光層用材料を含有する発光層とを有する、有機電界発光素子。
- さらに、前記陰極と該発光層との間に配置される電子輸送層および/または電子注入層を有し、該電子輸送層および電子注入層の少なくとも1つは、ボラン誘導体、ピリジン誘導体、フルオランテン誘導体、BO系誘導体、アントラセン誘導体、ベンゾフルオレン誘導体、ホスフィンオキサイド誘導体、ピリミジン誘導体、カルバゾール誘導体、トリアジン誘導体、ベンゾイミダゾール誘導体、フェナントロリン誘導体、およびキノリノール系金属錯体からなる群から選択される少なくとも1つを含有する、請求項9に記載する有機電界発光素子。
- 前記電子輸送層および/または電子注入層が、さらに、アルカリ金属、アルカリ土類金属、希土類金属、アルカリ金属の酸化物、アルカリ金属のハロゲン化物、アルカリ土類金属の酸化物、アルカリ土類金属のハロゲン化物、希土類金属の酸化物、希土類金属のハロゲン化物、アルカリ金属の有機錯体、アルカリ土類金属の有機錯体および希土類金属の有機錯体からなる群から選択される少なくとも1つを含有する、請求項10に記載の有機電界発光素子。
- 請求項9~11のいずれかに記載する有機電界発光素子を備えた表示装置。
- 請求項9~11のいずれかに記載する有機電界発光素子を備えた照明装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US16/625,700 US11600790B2 (en) | 2017-07-07 | 2018-06-18 | Polycyclic aromatic compound for organic electroluminescent device |
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JP2019527609A JP7148932B2 (ja) | 2017-07-07 | 2018-06-18 | 多環芳香族化合物 |
CN201880037731.XA CN110719914B (zh) | 2017-07-07 | 2018-06-18 | 多环芳香族化合物、有机元件用材料、有机电场发光元件、显示装置和照明装置 |
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Also Published As
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KR20200026182A (ko) | 2020-03-10 |
JPWO2019009052A1 (ja) | 2020-04-30 |
JP7148932B2 (ja) | 2022-10-06 |
US20210167288A1 (en) | 2021-06-03 |
TW201906851A (zh) | 2019-02-16 |
KR102561085B1 (ko) | 2023-07-27 |
US11600790B2 (en) | 2023-03-07 |
CN110719914B (zh) | 2023-07-28 |
TWI773785B (zh) | 2022-08-11 |
JP2022188012A (ja) | 2022-12-20 |
CN110719914A (zh) | 2020-01-21 |
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