Material for organic electroluminescence device, and organic electroluminescence device using the same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsYumiko Mizuki, Nobuhiro Yabunouchi, Tetsuya Inoue, Kumiko Hibino, Kazuki Nishimura
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Abstract
A material for an organic electroluminescence device represented by the following formula (I): wherein X1 to X8 are a nitrogen atom, CH, CHal or CRa; Az is a nitrogen-containing six-membered ring or a fused polycyclic group including a nitrogen-containing six-membered ring; W is an aromatic hydrocarbon group having 6 to 30 ring carbon atoms which is substituted by at least one cyano group or a heterocyclic group having 5 to 30 ring atoms which is substituted by at least one cyano group.
Claims17
A material for an organic electroluminescence device represented by formula (I):
- wherein, in the formula (I):
- X1 to X8 are independently a nitrogen atom, CH, CHal or CRa;
- Hals are independently a halogen atom;
- Ras are independently a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted silyl group or a cyano group;
- when plural Hals or plural Ras are present, the plural Hals or the Ras may be the same or different;
- when two adjacent groups of X1 to X5 are CRa, Ras in the adjacent CRas may be bonded to each other to form a ring;
- Az is a substituted or unsubstituted pyrimidine ring, a substituted or unsubstituted triazine ring, a substituted or unsubstituted quinazoline ring, or a substituted or unsubstituted 1,10-phenanthroline ring;
- q is an integer of 1 to 4;
- W is an aromatic hydrocarbon group having 6 to 30 ring carbon atoms which is substituted by at least one cyano group and may comprise a substituent that is not a cyano group, or an heterocyclic group having 5 to 30 ring atoms which is substituted by at least one cyano group and may comprise a substituent that is not a cyano group, wherein the substituent that is not a cyano group is one or more selected from the group consisting of an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a haloalkyl group having 1 to 20 carbon atoms, a haloalkoxy group having 1 to 20 carbon atoms, an alkylsilyl group having 1 to 10 carbon atoms, an aryloxy group having 6 to 30 ring carbon atoms, an arylsilyl group having 6 to 30 carbon atoms, a dibenzofuran group, and a dibenzothiophene group;
- and,
- when plural Ws are present, the plural Ws may be the same or different;
- provided that the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms and the heterocyclic group having 5 to 30 ring atoms which is substituted by at least one cyano group and may comprise a substituent that is not a cyano group, are not a group represented by formula (A)
- wherein, in formula (A):
- Y1 to Y8 are the same as X1 to X8 in the formula (I), or a carbon atom which forms a single bond;
- Y9 is NH, NRc, or a nitrogen atom which forms a single bond;
- and,
- Rc is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms or a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
Dependencies are inferred from the claim text.