Patent ID: 9450192
Filing Date: 2016-09-20
CPC Classification: C07D,C09K,H01L,H05B

Claim Text:
1. A carbazole derivative of formula (I) for an organic electroluminescent device: wherein Y represents one selected from N, O, P, S, a bicyclic heterocyclic ring fused with the carbazole, and a tricyclic heterocyclic ring; Ar wherein Ar and when Y represents N, Ar wherein Ar 1 and Ar 2 are each independently and optionally substituted by alkyl, or when Y represents N, Ar 1 and Ar 2 represents phenyl and biphenylyl respectively, and Ar 2 is substituted by or the carbazole derivative is one of compounds represented by formulas (1-30) and (1-31): when Y represents O, Ar when Y represents S, Ar when Y represents the bicyclic heterocyclic ring fused with the carbazole, Ar wherein Ar when Y represents a tricyclic heterocyclic ring, Ar