Patent ID: 8703303
Filing Date: 2014-04-22
Classification: C07D,C09K,H01L,H05B

Abstract:
1. An organic electroluminescent device, comprising: a light-emitting layer between an anode and a cathode piled one upon another on a substrate wherein the said light-emitting layer comprises (A) a phosphorescent dopant whose emission peak wavelength is longer than 600 nm and (B) a host material and the said host material comprises (b1) a compound represented by the following general formula (1) and a compound represented by the following general formula (3): wherein ring A is a heterocyclic ring fused to the adjacent rings and represented by formula (1a); X is independently CR or N and at least one of Xs is N; Ar 1 is independently (i) an aromatic hydrocarbon group selected from the group consisting of a phenyl group, a naphthyl group, a phenanthryl group, and an anthracenyl group or (ii) an aromatic heterocyclic group selected from the group consisting of a pyridyl group, a pyrimidyl group, a triazyl group, an imidazolyl group, a thienyl group, and a carbazolyl group, wherein the aromatic hydrocarbon group or the aromatic heterocyclic group is optionally substituted with substituents selected from the group consisting of an alkyl group of 1 to 6 carbon atoms, an alkoxyl group of 1 to 6 carbon atoms, an aryloxy group of 6 to 12 carbon atoms, an alkylthio group, a substituted amino group, an acetyl group, a phenyl group, a biphenylyl group, a terphenylyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, a triazyl group, an imidazolyl group, a thienyl group, and a carbazolyl group; each of R and R 1 is independently hydrogen, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, a cyano group, a dialkylamino group, a diarylamino group, a diaralkylamino group, an amino group, a nitro group, an acyl group, an alkoxycarbonyl group, a carboxyl group, an alkoxyl group, an aryloxy group, an alkylthio group, an alkylsulfonyl group, a haloalkyl group, a hydroxyl group, an amide group, or an aromatic hydrocarbon group of 6 to 24 carbon atoms or an aromatic heterocyclic group of 3 to 24 carbon atoms, wherein the aromatic hydrocarbon group or the aromatic heterocyclic group is optionally substituted; wherein Ar 3 is independently an aromatic hydrocarbon group of 6 to 24 carbon atoms or an aromatic heterocyclic group of 3 to 24 carbon atoms, wherein the aromatic hydrocarbon group or the aromatic heterocyclic group is optionally substituted; L is a divalent aromatic hydrocarbon group of 6 to 24 carbon atoms or an aromatic heterocyclic group of 3 to 24 carbon atoms, wherein the aromatic hydrocarbon group or the aromatic heterocyclic group is optionally substituted; R 3 is independently hydrogen, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, a cyano group, a dialkylamino group, a diarylamino group, a diaralkylamino group, an amino group, a nitro group, an acyl group, an alkoxycarbonyl group, a carboxyl group, an alkoxyl group, an aryloxy group, an alkylthio group, an alkylsulfonyl group, a haloalkyl group, a hydroxyl group, an amide group, or an aromatic hydrocarbon group of 6 to 24 carbon atoms or an aromatic heterocyclic group of 3 to 24 carbon atoms wherein the aromatic hydrocarbon group or the aromatic heterocyclic group is optionally substituted.