Patent ID: 9133205
Filing Date: 2015-09-15
Classification: C07D,C09K,H01L,H05B

Abstract:
1. An organic electroluminescent device comprising an anode, organic layers containing a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate wherein at least one organic layer selected from the group consisting of a light-emitting layer, a hole-transporting layer, an electron-transporting layer, a hole-blocking layer, and an electron-blocking layer contains a compound represented by general formula (1); in general formula (1), Z is a group formed by removing one of Ars from a compound represented by formula (1a); L is an m-valent aromatic hydrocarbon group of 6 to 50 carbon atoms or an m-valent aromatic heterocyclic group of 3 to 50 carbon atoms; m is an integer of 1 to 4 and, when in is 2 or more, Zs may be identical with or different from one another; in formula (1a), ring A is a hydrocarbon ring represented by formula (1b) and fused to the adjacent rings at arbitrary positions, ring B is a heterocyclic ring represented by formula (1c) and fused to the adjacent rings at arbitrary positions, and n is an integer of 2 to 4; in formulas (1a) and (1b), each R is independently a hydrogen atom, an aliphatic hydrocarbon group of 1 to 10 carbon atoms, an aromatic hydrocarbon group of 6 to 18 carbon atoms, or an aromatic heterocyclic group of 3 to 17 carbon atoms; and in formulas (1a) and (1c), each Ar is independently an aromatic hydrocarbon group of 6 to 50 carbon atoms or an aromatic heterocyclic group of 3 to 50 carbon atoms; however, at least one of L and Ars is an m-valent or monovalent group formed from a compound represented by formula (1d) by removing hydrogen atoms or a hydrogen atom; in formula (1d), X is a methine group, a nitrogen atom, or C—Ar