WO2022129117A1 - Materialien für elektronische vorrichtungen - Google Patents
Materialien für elektronische vorrichtungen Download PDFInfo
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- WO2022129117A1 WO2022129117A1 PCT/EP2021/085804 EP2021085804W WO2022129117A1 WO 2022129117 A1 WO2022129117 A1 WO 2022129117A1 EP 2021085804 W EP2021085804 W EP 2021085804W WO 2022129117 A1 WO2022129117 A1 WO 2022129117A1
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- substituted
- aromatic ring
- radicals
- ring systems
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- 239000000463 material Substances 0.000 title description 41
- 150000001875 compounds Chemical class 0.000 claims abstract description 138
- 238000000034 method Methods 0.000 claims abstract description 11
- 125000003118 aryl group Chemical group 0.000 claims description 203
- 150000003254 radicals Chemical group 0.000 claims description 118
- 125000004432 carbon atom Chemical group C* 0.000 claims description 82
- 125000003545 alkoxy group Chemical group 0.000 claims description 81
- 125000000217 alkyl group Chemical group 0.000 claims description 77
- 125000003342 alkenyl group Chemical group 0.000 claims description 48
- 125000000304 alkynyl group Chemical group 0.000 claims description 48
- -1 R 6 radicals Chemical class 0.000 claims description 47
- 229910052799 carbon Inorganic materials 0.000 claims description 36
- 125000001072 heteroaryl group Chemical group 0.000 claims description 26
- 229910052739 hydrogen Inorganic materials 0.000 claims description 23
- 125000006165 cyclic alkyl group Chemical group 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 21
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- 229910052794 bromium Inorganic materials 0.000 claims description 16
- 229910052740 iodine Inorganic materials 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
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- 125000006413 ring segment Chemical group 0.000 description 9
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- 125000000522 cyclooctenyl group Chemical group C1(=CCCCCCC1)* 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 150000007858 diazaphosphole derivatives Chemical class 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- XXPBFNVKTVJZKF-UHFFFAOYSA-N dihydrophenanthrene Natural products C1=CC=C2CCC3=CC=CC=C3C2=C1 XXPBFNVKTVJZKF-UHFFFAOYSA-N 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000001194 electroluminescence spectrum Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- JKFAIQOWCVVSKC-UHFFFAOYSA-N furazan Chemical compound C=1C=NON=1 JKFAIQOWCVVSKC-UHFFFAOYSA-N 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 125000005980 hexynyl group Chemical group 0.000 description 1
- 238000004770 highest occupied molecular orbital Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- HOBCFUWDNJPFHB-UHFFFAOYSA-N indolizine Chemical compound C1=CC=CN2C=CC=C21 HOBCFUWDNJPFHB-UHFFFAOYSA-N 0.000 description 1
- VVVPGLRKXQSQSZ-UHFFFAOYSA-N indolo[3,2-c]carbazole Chemical class C1=CC=CC2=NC3=C4C5=CC=CC=C5N=C4C=CC3=C21 VVVPGLRKXQSQSZ-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- ZLTPDFXIESTBQG-UHFFFAOYSA-N isothiazole Chemical compound C=1C=NSC=1 ZLTPDFXIESTBQG-UHFFFAOYSA-N 0.000 description 1
- CTAPFRYPJLPFDF-UHFFFAOYSA-N isoxazole Chemical compound C=1C=NOC=1 CTAPFRYPJLPFDF-UHFFFAOYSA-N 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- IMKMFBIYHXBKRX-UHFFFAOYSA-M lithium;quinoline-2-carboxylate Chemical compound [Li+].C1=CC=CC2=NC(C(=O)[O-])=CC=C21 IMKMFBIYHXBKRX-UHFFFAOYSA-M 0.000 description 1
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- HWNUOPJCMRBNKF-UHFFFAOYSA-N n-(9,9-dimethylfluoren-2-yl)-9,9-dimethyl-n-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]fluoren-2-amine Chemical compound O1C(C)(C)C(C)(C)OB1C1=CC=C(N(C=2C=C3C(C)(C)C4=CC=CC=C4C3=CC=2)C=2C=C3C(C)(C)C4=CC=CC=C4C3=CC=2)C=C1 HWNUOPJCMRBNKF-UHFFFAOYSA-N 0.000 description 1
- LCSMGMWMTSWXDD-UHFFFAOYSA-N n-(9,9-dimethylfluoren-2-yl)-9,9-dimethylfluoren-2-amine Chemical compound C1=CC=C2C(C)(C)C3=CC(NC4=CC=C5C6=CC=CC=C6C(C5=C4)(C)C)=CC=C3C2=C1 LCSMGMWMTSWXDD-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000005244 neohexyl group Chemical group [H]C([H])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- VXNSQGRKHCZUSU-UHFFFAOYSA-N octylbenzene Chemical compound [CH2]CCCCCCCC1=CC=CC=C1 VXNSQGRKHCZUSU-UHFFFAOYSA-N 0.000 description 1
- 125000005069 octynyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C#C* 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- 150000002921 oxetanes Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002924 oxiranes Chemical class 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- NRNFFDZCBYOZJY-UHFFFAOYSA-N p-quinodimethane Chemical class C=C1C=CC(=C)C=C1 NRNFFDZCBYOZJY-UHFFFAOYSA-N 0.000 description 1
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 1
- 125000006340 pentafluoro ethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000005981 pentynyl group Chemical group 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 150000002987 phenanthrenes Chemical class 0.000 description 1
- DLRJIFUOBPOJNS-UHFFFAOYSA-N phenetole Chemical compound CCOC1=CC=CC=C1 DLRJIFUOBPOJNS-UHFFFAOYSA-N 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 150000002991 phenoxazines Chemical class 0.000 description 1
- 229960005323 phenoxyethanol Drugs 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- CPNGPNLZQNNVQM-UHFFFAOYSA-N pteridine Chemical compound N1=CN=CC2=NC=CN=C21 CPNGPNLZQNNVQM-UHFFFAOYSA-N 0.000 description 1
- 150000003216 pyrazines Chemical class 0.000 description 1
- BUAWIRPPAOOHKD-UHFFFAOYSA-N pyrene-1,2-diamine Chemical class C1=CC=C2C=CC3=C(N)C(N)=CC4=CC=C1C2=C43 BUAWIRPPAOOHKD-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- JWVCLYRUEFBMGU-UHFFFAOYSA-N quinazoline Chemical compound N1=CN=CC2=CC=CC=C21 JWVCLYRUEFBMGU-UHFFFAOYSA-N 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 150000003252 quinoxalines Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 1
- 150000003413 spiro compounds Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 125000004001 thioalkyl group Chemical group 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- YGPLLMPPZRUGTJ-UHFFFAOYSA-N truxene Chemical compound C1C2=CC=CC=C2C(C2=C3C4=CC=CC=C4C2)=C1C1=C3CC2=CC=CC=C21 YGPLLMPPZRUGTJ-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000002061 vacuum sublimation Methods 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- ABDKAPXRBAPSQN-UHFFFAOYSA-N veratrole Chemical compound COC1=CC=CC=C1OC ABDKAPXRBAPSQN-UHFFFAOYSA-N 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 150000003754 zirconium Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/43—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
- C07C211/57—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems of the carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/43—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
- C07C211/57—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems of the carbon skeleton
- C07C211/61—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems of the carbon skeleton with at least one of the condensed ring systems formed by three or more rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
- C07C209/06—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/91—Dibenzofurans; Hydrogenated dibenzofurans
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/636—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/05—Isotopically modified compounds, e.g. labelled
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present application relates to aromatic amines having certain aromatic or heteroaromatic ring systems at the amine nitrogen atom.
- the compounds are suitable for use in electronic devices.
- OLEDs organic electroluminescent devices
- OLEDs organic electroluminescent devices
- the term OLEDs is understood to mean electronic devices which have one or more layers containing organic compounds and emit light when an electrical voltage is applied.
- the structure and general functional principle of OLEDs are known to those skilled in the art.
- Emission layers and layers with a hole-transporting function have a major impact on the performance data of electronic devices.
- New compounds are still being sought for use in these layers, in particular hole-transporting compounds and compounds which can serve as hole-transporting matrix material, in particular for phosphorescent emitters, in an emitting layer.
- compounds are sought which have a high glass transition temperature, high stability and high conductivity for holes.
- a high stability of the connection is a prerequisite for achieving a long service life of the electronic device.
- compounds are sought whose use in electronic devices to improve the performance of the Devices leads, in particular, to high efficiency, long service life and low operating voltage.
- triarylamine compounds such as spirobifluoreneamines and fluoreneamines are known in the art as hole-transporting materials and hole-transporting matrix materials for electronic devices.
- spirobifluoreneamines and fluoreneamines are known in the art as hole-transporting materials and hole-transporting matrix materials for electronic devices.
- aromatic amines according to the formulas below, which are characterized in that they have specific aromatic or heteroaromatic ring systems on the amine nitrogen atom, are outstandingly suitable for use in electronic devices. They are suitable in particular for use in OLEDs, again in particular for use therein as hole-transport materials and for use as hole-transporting matrix materials, in particular for phosphorescent emitters.
- the connections lead to high lifetime, high efficiency and low operating voltage of the devices.
- the compounds found also preferably have a high glass transition temperature, high stability, a low sublimation temperature, good solubility, good synthetic accessibility and high conductivity for holes.
- A is a group chosen from the following formulas:
- Z is chosen identically or differently on each occurrence from CR 1 and N;
- Ar 1 is selected identically or differently on each occurrence from aromatic ring systems having 6 to 40 aromatic ring atoms which are substituted by radicals R 3 and heteroaromatic ring systems having 5 to 40 aromatic ring atoms which are substituted by radicals R 3 are substituted;
- L 1 is the same or different on each occurrence, a single bond, an aromatic ring system having 6 to 40 aromatic ring atoms substituted with R 5 groups, or a heteroaromatic ring system having 5 to 40 aromatic ring atoms substituted with R 5 groups;
- L 2 is the same or different in each occurrence, a single bond, an aromatic ring system having 6 to 40 aromatic ring atoms substituted with R 5 groups, or a heteroaromatic ring system having 5 to 40 aromatic ring atoms substituted with R 5 groups;
- L 3 is the same or different in each occurrence, an aromatic ring system having 6 to 40 aromatic ring atoms substituted with R 5 groups, or a heteroaromatic ring system having 5 to 40 aromatic ring atoms substituted with R 5 groups;
- Bonds to the residue of the formula are Ar 1 -3, Ar 1 -4 or Ar 1 -5;
- radical R 3 is bonded to each of the four free positions on the ring, it being possible for the radicals R 3 to be the same or different on each occurrence.
- an aryl group is understood to mean either a single aromatic cycle, ie benzene, or a condensed aromatic polycycle, for example naphthalene, phenanthrene or anthracene.
- a condensed aromatic polycycle consists of two or more individual aromatic cycles condensed with one another. Condensation between cycles is understood to mean that the cycles share at least one edge with one another.
- An aryl group within the meaning of this invention contains 6 to 40 aromatic ring atoms. Furthermore, an aryl group does not contain a heteroatom as an aromatic ring atom, but only carbon atoms.
- a heteroaryl group is understood to mean either a single heteroaromatic cycle, for example pyridine, pyrimidine or thiophene, or a fused heteroaromatic polycycle, for example quinoline or carbazole.
- heteroaromatic polycycle consists of two or more individual aromatic or heteroaromatic cycles condensed with one another, where at least one of the aromatic and heteroaromatic cycles is a heteroaromatic cycle. Condensation between cycles is understood to mean that the cycles share at least one edge with one another.
- a heteroaryl group within the meaning of this invention contains 5 to 40 aromatic ring atoms, at least one of which is a heteroatom.
- the heteroatoms of the heteroaryl group are preferably selected from N, 0 and S.
- An aryl or heteroaryl group which can each be substituted with the above radicals, is understood to mean, in particular, groups derived from benzene, naphthalene, anthracene, phenanthrene, pyrene, dihydropyrene, chrysene, perylene, triphenylene, fluoranthene, benzanthracene, benzophenanthrene, tetracene, pentacene, benzopyrene, furan, benzofuran, isobenzofuran, dibenzofuran, thiophene, benzothiophene, isobenzothiophene, dibenzothiophene, pyrrole, indole, isoindole, carbazole, pyridine, quinoline, isoquinoline, acridine, phenanthridine, benzo-5,6-quinoline, benzo- 6,7-quinoline, benzo-7,8-quinoline, phenothi
- An aromatic ring system within the meaning of this invention is a system which does not necessarily only contain aryl groups, but which can additionally contain one or more non-aromatic rings which are fused with at least one aryl group.
- This non- aromatic rings contain only carbon atoms as ring atoms. Examples of groups encompassed by this definition are tetrahydronaphthalene, fluorene and spirobifluorene.
- the term aromatic ring system also includes systems consisting of two or more aromatic ring systems which are connected to one another via single bonds, for example biphenyl, terphenyl, 7-phenyl-2-fluorenyl, quaterphenyl and 3,5-diphenyl-1-phenyl.
- An aromatic ring system within the meaning of this invention contains 6 to 40 carbon atoms and no heteroatoms in the ring system. The definition of "aromatic ring system" does not include heteroaryl groups.
- a heteroaromatic ring system corresponds to the above definition of an aromatic ring system, with the difference that it must contain at least one heteroatom as a ring atom.
- the heteroaromatic ring system need not contain exclusively aryl groups and heteroaryl groups, but may additionally contain one or more non-aromatic rings fused with at least one aryl or heteroaryl group.
- the non-aromatic rings can contain only C atoms as ring atoms, or they can additionally contain one or more heteroatoms, where the heteroatoms are preferably selected from N, 0 and S.
- An example of such a heteroaromatic ring system is benzopyranyl.
- heteroaromatic ring system is understood to mean systems which consist of two or more aromatic or heteroaromatic ring systems which are connected to one another via single bonds, such as 4,6-diphenyl-2-triazinyl.
- a heteroaromatic ring system within the meaning of this invention contains 5 to 40 ring atoms selected from carbon and heteroatoms, where at least one of the ring atoms is a heteroatom.
- the heteroatoms of the heteroaromatic ring system are preferably selected from N, O and S.
- heteromatic ring system and "aromatic ring system” according to the definition of the present application thus differ from one another in that an aromatic Ring system cannot have a heteroatom as a ring atom, while a heteroaromatic ring system must have at least one heteroatom as a ring atom.
- This hetero atom may exist as a ring atom of a non-aromatic heterocyclic ring or as a ring atom of an aromatic heterocyclic ring.
- any aryl group is included within the term “aromatic ring system” and any heteroaryl group is included within the term “heteroaromatic ring system”.
- An aromatic ring system with 6 to 40 aromatic ring atoms or a heteroaromatic ring system with 5 to 40 aromatic ring atoms is understood to mean, in particular, groups which are derived from the groups mentioned above under aryl groups and heteroaryl groups and from biphenyl, terphenyl, quaterphenyl, fluorene, spirobifluorene, dihydrophenanthrene, dihydropyrene, tetrahydropyrene, indenofluorene, truxene, isotruxene, spirotruxene, spiroisotruxene, indenocarbazole, or combinations of these groups.
- radicals preferably the radicals methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, t- butyl, 2-methylbutyl, n-pentyl, s-pentyl, cyclopentyl, neo-pentyl, n-hexyl, cyclohexyl, neo-hexyl, n-heptyl, cycloheptyl, n-octyl, cyclooctyl, 2-
- An alkoxy or thioalkyl group having 1 to 20 carbon atoms, in which individual H atoms or CH 2 groups can also be substituted by the groups mentioned above in the definition of the radicals, is preferably methoxy, trifluoromethoxy, ethoxy, n-propoxy , i-propoxy, n- butoxy, i-butoxy, s-butoxy, t-butoxy, n-pentoxy, s-pentoxy, 2-methylbutoxy, n-hexoxy, cyclohexyloxy, n-heptoxy, cycloheptyloxy, n-octyloxy, cyclooctyloxy, 2-ethylhexyloxy, pentafluoroethoxy, 2,2,2-trifluoroethoxy, methylthio, ethylthio, n-propylthio, i-propylthio, n-butylthio, i-buty
- the wording that two or more radicals can form a ring with one another is to be understood, inter alia, as meaning that the two radicals are linked to one another by a chemical bond.
- the above formulation should also be understood to mean that if one of the two radicals is hydrogen, the second radical binds to the position to which the hydrogen atom was bonded, forming a ring.
- Z is equal to CR 1 .
- Z is chosen to be the same or different from CR 1 and N on each occurrence, with a maximum of one Z group per ring being N.
- Ar L is selected identically or differently on each occurrence from aromatic ring systems having 6 to 25 aromatic ring atoms which are substituted by radicals R 2 and heteroaromatic ring systems having 5 to 25 aromatic ring atoms which are substituted by radicals R 2 ; and particularly preferably selected identically or differently on each occurrence from phenyl, biphenyl, naphthyl and fluorenyl, each of which is substituted with radicals R 2 ; and most particularly preferably selected from phenyl substituted with R 2 groups.
- Ar L is preferably chosen to be the same or different on each occurrence
- L 1 is preferably chosen identically or differently on each occurrence from a single bond, an aromatic ring system having 6 to 25 aromatic ring atoms which is substituted by R 5 radicals, and a heteroaromatic ring system having 5 to 25 aromatic ring atoms which is substituted by R 5 radicals.
- L 1 is chosen identically or differently on each occurrence from a single bond, phenylene substituted with radicals R 5 , naphthylene substituted with radicals R 5 , fluorenylene substituted with radicals R 5 and biphenylene substituted with radicals R 5 .
- L 1 is a single bond on each occurrence.
- L 2 is preferably chosen identically or differently on each occurrence from a single bond, an aromatic ring system having 6 to 25 aromatic ring atoms which is substituted by R 5 radicals, and a heteroaromatic ring system having 5 to 25 aromatic ring atoms which is substituted by R 5 radicals.
- L 2 is chosen identically or differently on each occurrence from a single bond, phenylene substituted with radicals R 5 , naphthylene substituted with radicals R 5 , fluorenylene substituted with radicals R 5 and biphenylene substituted with radicals R 5 .
- L 2 is a single bond on each occurrence.
- L 3 is preferably chosen identically or differently on each occurrence from an aromatic ring system having 6 to 25 aromatic ring atoms, which is substituted by R 5 radicals, and a heteroaromatic ring system having 5 to 25 aromatic ring atoms, which is substituted by R 5 radicals.
- L 3 is chosen identically or differently on each occurrence from phenylene substituted with R 5 radicals, naphthylene substituted with R 5 radicals, fluorenylene substituted with R 5 radicals and biphenylene substituted with R 5 radicals.
- L 3 is phenylene substituted with radicals R 5 on each occurrence.
- Ar 1 is selected identically or differently on each occurrence from aromatic ring systems having 6 to 25 aromatic ring atoms which are substituted by radicals R 3 , and heteroaromatic ring systems having 5 to 25 aromatic ring atoms which are substituted with radicals R 3 .
- Preferred groups Ar 1 are at each occurrence identically or differently selected from monovalent groups derived from benzene, biphenyl, terphenyl, quaterphenyl, naphthalene, fluorene, in particular 9,9'-dimethylfluorene and 9,9'-diphenylfluorene, benzofluorene, spirobifluorene, indenofluorene, indenocarbazole, dibenzofuran, dibenzothiophene, benzocarbazole, carbazole, benzofuran, benzothiophene, indole, quinoline, pyridine, pyrimidine, pyrazine, pyridazine, and triazine, wherein each of the monovalent groups is substituted with
- the groups Ar 1 are preferably chosen identically or differently each time they occur from combinations of 2 to 4 groups derived from benzene, biphenyl, terphenyl, quaterphenyl, naphthalene, fluorene, in particular 9,9'-dimethylfluorene and 9, 9'-diphenylfluorene, benzofluorene, spirobifluorene, indenofluorene, indenocarbazole, dibenzofuran, dibenzothiophene, benzocarbazole, carbazole, benzofuran, benzothiophene, indole, quinoline, pyridine, pyrimidine, pyrazine, pyridazine, and triazine, each of the monovalent groups being substituted with R 3 groups is.
- Ar 1 groups are particularly preferred chosen identically or differently on each occurrence from benzene, biphenyl, terphenyl, quaterphenyl, naphthyl, fluorenyl, in particular 9,9'-dimethylfluorenyl and 9,9'-diphenylfluorenyl, benzofluorenyl, spirobifluorenyl, indenofluorenyl, indenocarbazolyl, dibenzofuranyl, dibenzothiophenyl, carbazolyl, benzofuranyl , benzothiophenyl, benzo-fused dibenzofuranyl, benzo-fused dibenzothiophenyl, and phenyl substituted with a group selected from naphthyl, fluorenyl, spir
- Ar 1 is preferably selected identically or differently on each occurrence from groups of the following formulas:
- the dashed line represents the bond to the nitrogen atom and wherein the groups may be substituted at the positions shown unsubstituted with radicals R 3 , and preferably have only H in the positions shown unsubstituted.
- the groups mentioned above preference is given to the groups Ar 1 -1 to Ar 1 -106 and Ar 1 -139 to Ar 1 -271, particularly preferably the groups Ar 1 -2 to Ar 1 -106 and Ar 1 -139 to Ar 1 -271.
- one or both of the groups Ar 1 are selected from groups Ar 1 -2, Ar 1 -5, Ar 1 -48, Ar 1 - 50, Ar 1 -63, Ar 1 -64, Ar 1 -65, Ar 1 -66, Ar 1 -74, Ar 1 -78, Ar 1 -140, Ar 1 -141 , Ar 1 -144, Ar 1 -149, Ar 1 -193, Ar 1 -195, Ar 1 -265, Ar 1 -266, Ar 1 -268 and Ar 1 -271.
- both groups Ar 1 are preferably selected from groups of the formulas (Ar1 -1 ) to (Ar1 -10 ), as defined above, in which the bond to the nitrogen atom in formula (II) is marked with * .
- Preferred among the formulas (Ar1 -1 ) to (Ar1 -10) are the formulas (Ar1 -1 ), (Ar1 -6), (Ar1 -7), (Ar1 -8) and (Ar1 -9).
- at least one group Ar 1 corresponds to the formula (Ar1 -1 ).
- at least one group Ar 1 corresponds to a formula selected from formulas (Ar1 -6), (Ar1-7), (Ar1 -8) and (Ar1 -9).
- one or both of the groups Ar 1 are selected from groups Ar 1 -2, Ar 1 -5, Ar 1 -48, Ar 1 -50, Ar 1 -63, Ar 1 -64, Ar 1 -66, Ar 1 -78, Ar 1 -140, Ar 1 -141 , Ar 1 -149, Ar 1 -193, Ar 1 -265, Ar 1 -266 Ar 1-268 and Ar 1-271 .
- the group Ar 1 which is not selected from groups of the formulas (Ar1 -1 ) to (Ar1 -10) is preferred, selected from aromatic ring systems having 6 to 25 aromatic ring atoms, which are linked to radicals R 3 are substituted, and heteroaromatic ring systems having 5 to 25 aromatic ring atoms which are substituted with radicals R 3 .
- the groups Ar 1 do not contain a carbazole group as a substituent R 3 , R 6 or R 7 .
- A is a group of the formula (A-1) which is bonded to L 1 via the bond marked with * in the formula.
- the formula (A-1) corresponds to bound to L 1 via the bond marked *.
- the formula (A-2) corresponds to the bound to L 1 via the bond marked *.
- V is chosen identically or differently on each occurrence from C(R 3 ) 2 and a group , where the dashed ties are the
- Bonds to the residue of the formula are Ar 1 -3, Ar 1 -4 or Ar 1 -5.
- V is C(R 3 )2 at each occurrence.
- Y is 0 for each occurrence.
- R 1 is particularly preferably selected on each occurrence, identically or differently, from H, D, F, CN, Si(R 6 )s, straight-chain alkyl groups having 1 to 20 carbon atoms, branched or cyclic alkyl groups having 3 to 20 carbon atoms, Aryl groups having 6 to 25, preferably 6 to 14, aromatic ring atoms, and heteroaryl groups having 5 to 40 aromatic ring atoms, the alkyl groups mentioned, the aryl groups mentioned and the heteroaryl groups mentioned each being substituted by radicals R 6 .
- R 1 per formula not being H and D preference is given to none, one, two or three groups R 1 per formula not being H and D.
- Groups which are not the same as H and D are preferably selected from F, CN , Si(R 6 )s, straight-chain alkyl groups with 1 to 20 carbon atoms, branched or cyclic alkyl groups having 3 to 20 carbon atoms, aryl groups having 6 to 25, preferably 6 to 14, aromatic ring atoms, and heteroaryl groups having 5 to 40 aromatic ring atoms, the alkyl groups mentioned, the aryl groups mentioned and the heteroaryl groups mentioned each having radicals R 6 are substituted.
- the compounds according to one of the formulas (I) to (III) preferably have at least one group R 1 which is selected from aromatic ring systems with 6 to 40 aromatic ring atoms with the exception of fluorenyl, which are substituted with radicals R 6 ;
- the compounds according to one of the formulas (I) to (III) particularly preferably have at least one group R 1 which is selected from aryl groups having 6 to 25, preferably 6 to 14, aromatic ring atoms which are substituted by radicals R 6 .
- the compounds according to one of the formulas (I) to (III) have at least one group R 1 which is a phenyl group which is substituted by radicals R 6 .
- all radicals R 1 in formulas (I) to (III) are H or D, particularly preferably H.
- R 4 is particularly preferably selected on each occurrence, identically or differently, from straight-chain alkyl groups having 1 to 20 carbon atoms, each of which is substituted by radicals R 6 , and branched or cyclic alkyl groups having 3 to 20 carbon atoms, each of which is substituted by radicals R 6 are substituted; it being possible for any two radicals R 4 to be linked to one another and to form a ring.
- the alkyl groups mentioned are very particularly preferably unsubstituted, ie in these cases R 6 is H or D, preferably H.
- R 4 is the same or different, preferably the same, selected from methyl, ethyl, n-propyl, iso-propyl and tert-butyl, or two radicals R 4 which bind to the same carbon atom are linked to form a cyclohexyl or cyclopentyl group.
- two radicals R 4 which bind to the same carbon atom are chosen to be the same.
- the same two R 4 are selected from straight-chain alkyl groups having 1 to 20 carbon atoms, each of which is substituted with radicals R 6 , and branched or cyclic alkyl groups having 3 to 20 carbon atoms, the are each substituted with groups R 6 ; it being possible for any two radicals R 4 to be linked to one another and to form a ring.
- the alkyl groups mentioned are then preferably unsubstituted, ie in these cases R 6 is H or D, preferably H.
- R 4 is then very particularly preferably identical or different, preferably identical, selected from methyl, ethyl, n-propyl, isopropyl and tert-butyl I, or two radicals R 4 which bind to the same carbon atom are linked to form a cyclohexyl or cyclopentyl group.
- two radicals R 4 which bind to the same carbon atom can be selected differently.
- the preferred embodiments mentioned above for R 4 apply.
- index k is selected from 0 and 1; according to a particularly preferred embodiment, index k is equal to 0.
- Formula (I) preferably corresponds to one of the following formulas:
- L 1 is preferably a single bond on each occurrence.
- Preferred embodiments of the above formulas correspond to the following formulas: where the groups that occur are defined as above, and L 1 is preferably a single bond on each occurrence.
- Formula (II) preferably corresponds to one of the following formulas: where the occurring groups are defined as above.
- Formula (II-2) preferably corresponds to one of the following formulas 5
- Ar 1 is selected from aromatic ring systems having 6 to 40 aromatic ring atoms substituted by R 3 radicals and heteroaromatic ring systems having 5 to 40 aromatic ring atoms substituted by R 3 radicals .
- Preferred embodiments of formula (III) are the following formulas: where the occurring groups are defined as above.
- Preferred embodiments of formula (III) are the following formulas: where the occurring groups are defined as above.
- R 1 and R 6 are defined as above, and are preferably defined as indicated above in the preferred embodiments.
- R 1 and R 6 are particularly preferably H.
- Particularly preferred among embodiments (A) to (D) are embodiments (A) and (B), in particular for R 1 and R 6 are H.
- Preferred compounds according to the present application are shown below: 5
- the compounds according to the present application can be prepared using the synthetic methods described below.
- a terphenyl derivative substituted with a reactive group in a position ortho to a phenyl-phenyl bond can be prepared in a Suzuki coupling.
- a Suzuki coupling can be carried out in a subsequent step, introducing an aromatic ring system into the molecule.
- a compound according to the present application is obtained in which the index k is >0.
- the present application is thus a method for preparing a compound according to the present application, characterized in that a substituted with a reactive group terphenyl derivative a) is reacted in a coupling reaction with a secondary amine, or b) in a coupling reaction with a Aromatic or heteroaromatic is implemented, which carries a boron-containing group.
- the reactive group is preferably selected from CI, Br and I, particularly preferably from Br and I.
- the coupling reaction in the reaction under a) is preferably a Hartwig-Buchwald coupling reaction.
- the coupling reaction under b) is preferably a Suzuki coupling reaction.
- the terphenyl derivative substituted with one reactive group is prepared starting from a biphenyl derivative substituted with two reactive groups, which is prepared by means of a Suzuki coupling reaction.
- Suitable reactive leaving groups are, for example, bromine, iodine, chlorine, boronic acids, boronic esters, amines, alkenyl or alkynyl groups with a terminal C-C double bond or C-C triple bond, oxiranes, oxetanes, groups which carry out a cycloaddition, for example a 1,3- dipolar cycloaddition, such as dienes or azides, carboxylic acid derivatives, alcohols and silanes.
- a cycloaddition for example a 1,3- dipolar cycloaddition, such as dienes or azides, carboxylic acid derivatives, alcohols and silanes.
- oligomers, polymers or dendrimers containing one or more compounds of the formula (I), (II) or (III), the bond(s) to the polymer, oligomer or dendrimer being attached to any desired in formula (I) , (II) or (III) may be located with R 1 , R 2 , R 3 , R 4 or R 5 substituted positions.
- the compound is part of a side chain of the oligomer or polymer or part of the main chain.
- an oligomer is understood as meaning a compound which is made up of at least three monomer units.
- a polymer in the context of the invention is understood as meaning a compound which is made up of at least ten monomer units.
- the polymers, oligomers or dendrimers according to the invention can be conjugated, partially conjugated or non-conjugated.
- the oligomers or polymers according to the invention can be linear, branched or dendritic.
- the units of the formula (I), (II) or (III) can be linked directly to one another or they can be linked via a divalent group, for example via a substituted or unsubstituted alkylene group, via a heteroatom or via a divalent aromatic or heteroaromatic group be linked together.
- branched and dendritic structures for example, three or more units of the formula (I), (II) or (III) via a trivalent or higher-valent group, for example via a trivalent or higher-valent aromatic or heteroaromatic group, to form a branched or dendritic oligomer or polymer be linked.
- the monomers according to the invention are homopolymerized or copolymerized with other monomers.
- Suitable and preferred comonomers are selected from fluorenes, spirobifluorenes, paraphenylenes, carbazoles, thiophenes, dihydrophenanthrenes, cis- and trans-indenofluorenes, ketones, phenanthrenes or a number of these units.
- the polymers, oligomers and dendrimers usually contain other units, such as emitting (fluorescent or phosphorescent) units such.
- Vinyltriarylamine or phosphorescent metal complexes and / or charge transport units, in particular those based on triarylamines.
- the polymers, oligomers and dendrimers according to the invention have advantageous properties, in particular long lifetimes, high efficiencies and good color coordinates.
- the polymers and oligomers according to the invention are generally prepared by polymerizing one or more types of monomers, of which at least one monomer leads to repeating units of the formula (I), (II) or (III) in the polymer.
- Suitable polymerization reactions are known to those skilled in the art and are described in the literature. The following are particularly suitable and preferred polymerization reactions which lead to C-C or C-N linkages:
- Formulations of the compounds according to the invention are required for the processing of the compounds according to the invention from the liquid phase, for example by spin coating or by printing processes. These formulations can be, for example, solutions, dispersions or emulsions. It may be preferable to use mixtures of two or more solvents for this.
- Suitable and preferred solvents are, for example, toluene, anisole, o-, m- or p-xylene, methyl benzoate, mesitylene, tetralin, veratrol, THF, methyl-THF, THP, chlorobenzene, dioxane, phenoxytoluene, in particular 3-phenoxytoluene, (-) - fenchone, 1,2,3,5-tetramethylbenzene, 1,2,4,5-tetramethylbenzene, 1-methylnaphthalene, 2-methylbenzothiazole, 2-phenoxyethanol, 2-pyrrolidinone, 3-methylanisole, 4-methylanisole, 3,4 -dimethylanisole, 3,5-dimethylanisole, Acetophenone, alpha-terpineol, benzothiazole, butyl benzoate, cumene, cyclohexanol, cyclohexanone, cyclohexylbenzene, decalin
- the invention therefore also provides a formulation, in particular a solution, dispersion or emulsion, containing at least one compound of the formula (I), (II) or (III) or at least one polymer, oligomer or dendrimer containing at least one unit of the formula (I ), (II) or (III) and at least one solvent, preferably an organic solvent.
- a formulation in particular a solution, dispersion or emulsion, containing at least one compound of the formula (I), (II) or (III) or at least one polymer, oligomer or dendrimer containing at least one unit of the formula (I ), (II) or (III) and at least one solvent, preferably an organic solvent.
- solvent preferably an organic solvent
- the compound of the formula (I), (II) or (III) is suitable for use in an electronic device, in particular an organic electroluminescent device (OLED).
- OLED organic electroluminescent device
- the compound of formula (I), (II) or (III) can be used in different functions and layers. Preference is given to use as a hole-transporting material in a hole-transporting layer and/or as a matrix material in an emitting layer, particularly preferably in combination with a phosphorescent emitter.
- the invention therefore also relates to the use of a compound of the formula (I), (II) or (III) in an electronic device.
- the electronic device is preferably selected from the group consisting of organic integrated circuits (OICs), organic field effect transistors (OFETs), organic thin film transistors (OTFTs), organic light-emitting transistors (OLETs), organic solar cells (OSCs), organic optical detectors, organic photoreceptors, organic field quench Devices (OFQDs), organic light-emitting electrochemical cells (OLECs), organic laser diodes (O-lasers) and particularly preferably organic electroluminescent devices (OLEDs).
- OICs organic integrated circuits
- OFETs organic field effect transistors
- OFTs organic thin film transistors
- OLETs organic light-emitting transistors
- OSCs organic solar cells
- OFQDs organic field quench Devices
- OLEDs organic light-emitting electrochemical cells
- the subject matter of the invention is also an electronic device containing at least one compound of the formula (I), (II) or (III).
- the electronic device is preferably selected from the devices mentioned above.
- An organic electroluminescence device containing anode, cathode and at least one emitting layer is particularly preferred, characterized in that the device contains at least one organic layer which contains at least one compound of the formula (I), (II) or (III).
- Preference is given to an organic electroluminescent device containing anode, cathode and at least one emitting layer characterized in that at least one organic layer in the device, selected from hole-transporting and emitting layers, contains at least one compound of the formula (I), (II) or (III ) contains.
- a hole-transporting layer is understood to mean all layers which are arranged between the anode and the emitting layer, preferably hole-injection layer, hole-transporting layer and electron-blocking layer.
- a hole injection layer is understood to be a layer that is directly adjacent to the anode.
- a hole-transport layer is understood to mean a layer which is present between the anode and the emitting layer but does not directly adjoin the anode, and preferably also does not directly adjoin the emitting layer.
- An electron blocking layer is understood to mean a layer that is present between the anode and the emitting layer and is directly adjacent to the emitting layer.
- An electron blocking layer preferably has a high-energy LUMO and thereby prevents electrons from exiting the emissive layer.
- the electronic device can also contain other layers. These are for example each selected from one or more hole injection layers, hole transport layers, hole blocking layers, electron transport layers, electron injection layers, electron blocking layers, exciton blocking layers, intermediate layers (interlayers), charge generation layers (charge generation layers) and/or organic or inorganic p/n junctions.
- layers are for example each selected from one or more hole injection layers, hole transport layers, hole blocking layers, electron transport layers, electron injection layers, electron blocking layers, exciton blocking layers, intermediate layers (interlayers), charge generation layers (charge generation layers) and/or organic or inorganic p/n junctions.
- each of these layers does not necessarily have to be present and the choice of layers always depends on the compounds used and, in particular, also on whether the electroluminescent device is fluorescent or phosphorescent.
- the sequence of the layers of the electronic device is preferably as follows:
- the organic electroluminescent device can contain a plurality of emitting layers. These emission layers particularly preferably have a total of several emission maxima between 380 nm and 750 nm, resulting in white emission overall, ie various emitting compounds which can fluoresce or phosphorescent and which are blue, green, yellow, orange or red are used in the emitting layers emit light. Three-layer systems are particularly preferred, i.e. systems with three emitting layers, one of the three layers each having blue, one of each of the three layers shows green emission and one of each of the three layers shows orange or red emission.
- the compounds according to the invention are preferably present in a hole-transporting layer or in the emitting layer. It should be noted that, instead of a plurality of emitter compounds emitting color, an individually used emitter compound which emits in a broad wavelength range can also be suitable for generating white light.
- the emitting layer can be a fluorescent emitting layer or it can be a phosphorescent emitting layer.
- the emitting layer is preferably a blue fluorescent layer or a green phosphorescent layer.
- the device containing the compound of the formula (I), (II) or (III) contains a phosphorescent emitting layer, it is preferred that this layer contains two or more, preferably exactly two, different matrix materials (mixed matrix system) . Preferred embodiments of mixed matrix systems are described in more detail below.
- the compound of the formula (I), (II) or (III) is used as a hole-transport material in a hole-transport layer, a hole-injection layer or an electron-blocking layer, the compound can be used as a pure material, i.e. in a proportion of 100%, in the hole-transport layer. or it can be used in combination with one or more other compounds.
- a hole-transporting layer containing the compound of the formula (I), (II) or (III) additionally contains one or more further hole-transporting compounds.
- These further hole-transporting compounds are preferably selected from triarylamine compounds, particularly preferably from mono-triarylamine compounds. They are very particularly preferred selected from the preferred embodiments of hole transport materials given below.
- the compound of formula (I), (II) or (III) and the one or more other hole-transporting compounds are preferably each present in an amount of at least 10%, more preferably each in an amount of at least 20% present.
- a hole-transporting layer containing the compound of the formula (I), (II) or (III) additionally contains one or more p-dopants.
- the p-dopants used are preferably those organic electron acceptor compounds which can oxidize one or more of the other compounds in the mixture.
- Particularly preferred p-dopants are quinodimethane compounds, azaindenofluorenediones, azaphenalenes, azatriphenylenes, h, metal halides, preferably transition metal halides, metal oxides, preferably metal oxides containing at least one transition metal or a metal of main group 3, and transition metal complexes, preferably complexes of Cu, Co, Ni, Pd and Pt with ligands containing at least one oxygen atom as a binding site. Transition metal oxides are also preferred as dopants, preferably oxides of rhenium, molybdenum and tungsten, particularly preferably Re2O?, MoOs, WO3 and ReOs.
- Complexes of bismuth in the oxidation state (III), in particular bismuth(III) complexes with electron-poor ligands, in particular carboxylate ligands, are further preferred.
- the p-dopants are preferably present in a largely uniform distribution in the p-doped layers. This can be achieved, for example, by co-evaporation of the p-dopant and the hole-transport material matrix.
- the p-dopant is preferably present in the p-doped layer in a proportion of 1 to 10%.
- the device contains a hole injection layer which corresponds to one of the following embodiments: a) it contains a triarylamine and a p-dopant; or b) it contains a single electron-deficient material (electron acceptor).
- the triarylamine is a mono-triarylamine, in particular one of the preferred triarylamine derivatives mentioned further below.
- the electron-poor material is a hexaazatriphenylene derivative, as described in US 2007/0092755.
- the compound of formula (I), (II) or (III) may be contained in a hole injection layer, in a hole transport layer, and/or in an electron blocking layer of the device. If the compound is present in a hole injection layer or in a hole transport layer, it is preferably p-doped, ie it is present in the layer mixed with a p-dopant, as described above.
- the compound of formula (I), (II) or (III) is contained in an electron blocking layer.
- it is preferably not p-doped.
- it is preferably present as an individual compound in the layer, without admixture of a further compound.
- the compound of the formula (I), (II) or (III) is used in an emitting layer as matrix material in combination with one or more emitting compounds, preferably phosphorescent emitting compounds.
- the phosphorescent emitting compounds are preferably selected from red phosphorescent and green phosphorescent compounds.
- the proportion of the matrix material in the emitting layer is between 50.0 and 99.9% by volume, preferably between 80.0 and 99.5% by volume and particularly preferably between 85.0 and 97.0% by volume. Accordingly, the proportion of the emitting compound is between 0.1 and 50.0% by volume, preferably between 0.5 and 20.0% by volume and particularly preferably between 3.0 and 15.0% by volume.
- An emitting layer of an organic electroluminescent device can also contain systems comprising a plurality of matrix materials (mixed matrix systems) and/or a plurality of emitting compounds.
- the emitting compounds are generally those compounds whose proportion in the system is the smaller, and the matrix materials are those compounds whose proportion in the system is the greater. In individual cases, however, the proportion of a single matrix material in the system can be smaller than the proportion of a single emitting compound.
- the compounds of the formula (I), (II) or (III) are used as a component of mixed matrix systems, preferably for phosphorescent emitters.
- the mixed matrix systems preferably comprise two or three different matrix materials, particularly preferably two different matrix materials.
- One of the two materials is preferably a material with hole-transporting properties and the other material is a material with electron-transporting properties. It is also preferred if one of the materials is selected from compounds with a large energy difference between HOMO and LIIMO (wide-bandgap materials).
- the compound of the formula (I), (II) or (III) preferably represents the matrix material with hole-transporting properties.
- the compound of the formula (I), (II) or (III) is used as a matrix material for a phosphorescent emitter in the emitting layer of an OLED, a second matrix compound is present in the emitting layer and has electron-transporting properties.
- the two different matrix materials can be present in a ratio of 1:50 to 1:1, preferably 1:20 to 1:1, particularly preferably 1:10 to 1:1 and very particularly preferably 1:4 to 1:1.
- the desired electron-transporting and hole-transporting properties of the mixed matrix components can also be combined mainly or completely in a single mixed matrix component, with the further or the further mixed matrix components fulfilling other functions.
- phosphorescent emitters typically includes compounds in which the light emission occurs through a spin-forbidden transition, for example a transition from a triplet excited state or a state with a higher spin quantum number, for example a quintet state.
- Particularly suitable phosphorescent emitters are compounds which, when suitably excited, emit light, preferably in the visible range, and also contain at least one atom with an atomic number greater than 20, preferably greater than 38 and less than 84, particularly preferably greater than 56 and less than 80.
- Compounds containing copper, molybdenum, tungsten, rhenium, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver, gold or europium are preferably used as phosphorescent emitters, in particular compounds containing iridium, platinum or copper.
- Preferred fluorescent emitting compounds are selected from the class of arylamines.
- An arylamine or an aromatic amine in the context of this invention is understood as meaning a compound which contains three substituted or unsubstituted aromatic or heteroaromatic ring systems bonded directly to the nitrogen. At least one of these aromatic or heteroaromatic ring systems is preferably a fused ring system, particularly preferably having at least 14 aromatic ring atoms.
- Preferred examples of these are aromatic anthracenamines, aromatic anthracenediamines, aromatic pyrenamines, aromatic pyrenediamines, aromatic chrysenamines or aromatic chrysenediamines.
- aromatic anthracene amine is understood to mean a compound in which a diarylamino group is attached directly to an anthracene group, preferably in the 9-position.
- aromatic anthracene diamine means a compound in which two diarylamino groups are attached directly to an anthracene group, preferably in the 9,10-position.
- Aromatic pyrenamines, pyrenediamines, chrysenamines and chrysenediamines are defined analogously, the diarylamino groups on the pyrene preferably being bonded in the 1-position or in the 1,6-position.
- emitting compounds are indenofluorenamines or -diamines, benzoindenofluorenamines or -diamines, and dibenzoindenofluorenamines or -diamines, and indenofluorene derivatives with fused aryl groups. Also preferred are pyrene arylamines. Also preferred are benzoindenofluorene amines, benzofluorene amines, extended benzoindenofluorenes, phenoxazines, and fluorene derivatives linked to furan moieties or to thiophene moieties.
- Preferred matrix materials for fluorescent emitters are selected from the classes of oligoarylenes (eg 2,2',7,7'-tetraphenylspirobifluorene), in particular oligoarylenes containing fused aromatic groups, oligoarylenevinylenes, polypodal metal complexes, hole-conducting compounds , the electron-conducting compounds, especially ketones, phosphine oxides, and sulfoxides; the atropisomers, the boronic acid derivatives or the benzanthracenes.
- oligoarylenes eg 2,2',7,7'-tetraphenylspirobifluorene
- oligoarylenes containing fused aromatic groups e.g 2,2',7,7'-tetraphenylspirobifluorene
- oligoarylenes containing fused aromatic groups e.g 2,2',7,7'-tetraphenylspirobifluorene
- Particularly preferred matrix materials are selected from the classes of oligoarylenes containing naphthalene, anthracene, benzanthracene and/or pyrene or atropisomers of these compounds, oligoarylenevinylenes, ketones, phosphine oxides and sulfoxides.
- Very particularly preferred matrix materials are selected from the classes of oligoarylenes containing anthracene, benzanthracene, benzophenanthrene and/or pyrene or atropisomers of these compounds.
- an oligoarylene is to be understood as meaning a compound in which at least three aryl or arylene groups are bonded to one another.
- Matrix materials for phosphorescent emitters In addition to the compounds of the formula (I), (II) or (III), preferred matrix materials for phosphorescent emitters are aromatic ketones, aromatic phosphine oxides or aromatic sulfoxides or sulfones, triarylamines, carbazole derivatives, e.g. B.
- CBP N, N-biscarbazolylbiphenyl or carbazole derivatives, indolocarbazole derivatives, indenocarbazole derivatives, azacarbazole derivatives, bipolar matrix materials, silanes, azaboroles or boron esters, triazine derivatives, zinc complexes, diazasilol or tetraazasilol derivatives, diazaphosphol derivatives, bridged carbazole derivatives , triphenylene derivatives, or lactams.
- Electron-transporting materials are Electron-transporting materials:
- Suitable electron-transporting materials are, for example, the compounds disclosed in Y. Shirota et al., Chem. Rev. 2007, 107(4), 953-1010 or other materials such as are used in these layers according to the prior art.
- Aluminum complexes for example Alqs, zirconium complexes, for example Zrq4, lithium complexes, for example Liq, benzimidazole derivatives, triazine derivatives, pyrimidine derivatives, pyridine derivatives, pyrazine derivatives, quinoxaline derivatives, quinoline derivatives, oxadiazole derivatives, aromatic ketones, lactams, boranes, diazaphosphole derivatives and phosphine oxide derivatives are particularly suitable.
- indenofluorenamine derivatives amine derivatives, hexaazatriphenylene derivatives, amine derivatives with condensed aromatics, monobenzoindenofluorenamines, dibenzoindenofluorenamines, spirobifluorenamines Amines, fluorene amines, spiro-dibenzopyran amines, dihydroacridine derivatives, spirodibenzofurans and spirodibenzothiophenes, phenanthrene diarylamines, spiro-
- Tribenzotropolone Tribenzotropolone, spirobifluorene with meta-phenyldiamine groups, spiro- bisacridines, xanthene diarylamines, and 9,10-dihydroanthracene
- Compounds HT-1 through HT-10 are generally suitable for use in hole transporting layers. Their use is not limited to specific OLEDs, such as the OLEDs described in the present application.
- Compounds HT-1 to HT-10 can be prepared according to the procedures disclosed in the publications cited in the table above.
- the further teaching relating to the use and production of the compounds, which is disclosed in the laid-open specifications listed in the table above, is hereby explicitly included and is preferably to be combined with the above-mentioned teaching relating to the use of the above-mentioned compounds as hole-transporting materials.
- the compounds HT-1 to HT-10 show excellent properties when used in OLEDs, in particular excellent lifetime and efficiency.
- metals with a low work function metal alloys or multi-layer structures are made of Various metals are preferred, such as alkaline earth metals, alkali metals, main group metals or lanthanides (e.g. Ca, Ba, Mg, Al, In, Mg, Yb, Sm, etc.). Also suitable are alloys of an alkali or alkaline earth metal and silver, for example an alloy of magnesium and silver.
- alkaline earth metals e.g. Ca, Ba, Mg, Al, In, Mg, Yb, Sm, etc.
- alloys of an alkali or alkaline earth metal and silver for example an alloy of magnesium and silver.
- other metals can also be used which have a relatively high work function, such as e.g. B.
- a thin intermediate layer of a material with a high dielectric constant between a metallic cathode and the organic semiconductor may also be preferred.
- Lithium quinolinate (LiQ) can also be used for this.
- the layer thickness of this layer is preferably between 0.5 and 5 nm.
- the anode preferably has a work function of greater than 4.5 eV vs. vacuum.
- metals with a high redox potential such as Ag, Pt or Au, are suitable for this.
- metal/metal oxide electrodes eg Al/Ni/NiOx, Al/PtOx
- at least one of the electrodes must be transparent or partially transparent in order to allow either the irradiation of the organic material (organic solar cell) or the extraction of light (OLED, O-LASER).
- Preferred anode materials here are conductive mixed metal oxides.
- ITO Indium tin oxide
- IZO indium zinc oxide
- Conductive, doped organic materials in particular conductive, doped polymers, are also preferred.
- the anode can also consist of several layers, for example an inner layer made of ITO and an outer layer made of a metal oxide, preferably tungsten oxide, molybdenum oxide or vanadium oxide.
- the electronic device is characterized in that one or more layers with a sublimation process are coated.
- the materials are vapour-deposited in vacuum sublimation systems at an initial pressure of less than 10' 5 mbar, preferably less than 10' 6 mbar. However, it is also possible for the initial pressure to be even lower, for example less than 10′ 7 mbar.
- An electronic device is also preferred, characterized in that one or more layers are coated using the OVPD (Organic Vapor Phase Deposition) method or with the aid of carrier gas sublimation.
- the materials are applied at a pressure of between 10'5 mbar and 1 bar.
- OVJP Organic Vapor Jet Printing
- the materials are applied directly through a nozzle and structured in this way (e.g. BMS Arnold et al., Appl. Phys. Lett. 2008, 92, 053301).
- an electronic device characterized in that one or more layers of solution, such as. B. by spin coating, or with any printing method, such as. B. screen printing, flexographic printing, nozzle printing or offset printing, but particularly preferably LITI (Light Induced Thermal Imaging, thermal transfer printing) or ink-jet printing (ink jet printing). Soluble compounds of the formula (I), (II) or (III) are required for this. High solubility can be achieved by suitable substitution of the compounds.
- one or more layers are applied from solution and one or more layers are applied by a sublimation process.
- the device is structured, contacted and finally sealed, depending on the application, in order to exclude the damaging effects of water and air.
- the electronic devices containing one or more compounds of the formula (I), (II) or (III) can be used in displays, used as light sources in lighting applications and as light sources in medical and/or cosmetic applications.
- N-(9,9-dimethyl-9H-fluoren-2-yl)-9,9-dimethyl-9H-fluoren-2-amine (30g, 75mmol), 4- ⁇ [1,1'-biphenyl] -4-yl ⁇ -3-bromo-1,1'-biphenyl, (29 g, 75 mmol) and sodium tert-butylate (14.7 g, 150 mmol) are dissolved in 350 mL of toluene. The solution is degassed and saturated with N2. It is then treated with tri-tert-butylphosphine (7.5 ml; 7.5 mmol, 1 M in xylene) and 3.4 g (3.8 mmol) Pd2(dba)s.
- the reaction mixture is heated to boiling overnight under a protective atmosphere.
- the mixture is cooled and divided between toluene and water, the organic phase is washed three times with water and dried over Na2SÜ4 and evaporated.
- the crude product has been filtered through silica gel with toluene, the residue that remains is recrystallized from toluene and finally sublimed under high vacuum. Purity is 99.9%.
- the yield is 23.9 g (45% of theory).
- the OLEDs have the following layer structure: substrate / hole injection layer (HIL) / hole transport layer (HTL1) / optional second hole transport layer (HTL2) / electron blocking layer (EBL) / emission layer (EML) / optional hole blocking layer (HBL) / electron transport layer (ETL1) / optional second electron transport layer (ETL2) / Electron Injection Layer (EIL) and finally a cathode.
- the cathode is formed by a 100 nm thick aluminum layer.
- the exact structure of the OLEDs can be found in the following tables. The materials required to produce the OLEDs are shown in Table 7.
- a fluorene derivative is used as the “HTM-a” material of the HIL and the HTL.
- NDP-9 from Novaled AG, Dresden, is used as p-dopant A.
- the emission layer consists of at least one matrix material (host material, host material) and an emitting dopant (dopant, emitter), which is added to the matrix material or matrix materials by co-evaporation in a specific volume fraction.
- a specification such as H:SEB (95%:5%) means that the material H is present in the layer in a volume fraction of 95% and SEB in a fraction of 5%.
- the electron transport layer and the hole injection layer also consist of a mixture of two materials.
- the OLEDs are characterized by default.
- the electroluminescence spectra, the external quantum efficiency (EQE, measured in %) as a function of the luminance, calculated from current-voltage-luminance characteristics, assuming a Lambertian Radiation characteristics and service life are determined.
- the specification EQE @ 10mA/cm 2 refers to the external quantum efficiency that is achieved at 10mA/cm 2 .
- the service life LT is defined as the time after which the luminance falls from the starting luminance to a certain percentage during operation with constant current density.
- An indication of LT90 means that the specified service life corresponds to the time after which the luminance has dropped to 90% of its initial value.
- the statement @60 mA/cm 2 for example, means that the service life in question is measured at 60 mA/cm 2 .
- OLEDs with the following structure are produced:
- OLEDs 1 to 4 show that the compounds according to the present application are well suited for use in the electron blocking layer of blue fluorescent OLEDs.
- the OLEDs show good results for lifetime, efficiency and operating voltage as shown in the table below:
- OLEDs with the following structure are produced:
- OLEDs 5 to 8 show that the compounds according to the present application are well suited for use in the electron blocking layer of green phosphorescent OLEDs.
- the OLEDs show good results for lifetime, efficiency and operating voltage as shown in the table below:
- OLEDs with the following structure are produced:
- OLEDs 9 and 10 show that the compounds according to the present application are well suited for use in the hole injection layer of blue fluorescent OLEDs.
- the OLEDs show good results for lifetime, efficiency and
- HTM-2 and HTM-4 can also be used as HIL in blue fluorescent OLEDs in a correspondingly suitable OLED stack. 5) Use of the compounds in the EBL of green phosphorescent OLEDs
- OLEDs with the following structure are produced:
- HTM-1 through HTM-4 can be used in place of HTM-5 in the stack shown above. 5
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