Patent ID: 7839074
Filing Date: 2010-11-23
Classification: C07C,C09K,H01L,H05B,Y10S

Abstract:
1. An electroluminescence device which comprises: a cathode, an anode and an organic thin film layer comprising at least one layer comprising a light emitting layer and disposed between the cathode and the anode, wherein the light emitting layer comprises a light emitting material comprising at least one anthracene derivative represented by general formula (2) wherein Ar is a condensed aromatic group selected from the group consisting of 1-naphthyl group, 2-naphthyl group, 1-anthryl group, 2-anthryl group, 1-phenanthryl group, 2-phenanthryl group, 3-phenanthryl group, 4-phenanthryl group, 1-naphthacenyl group, 2-naphthacenyl group, 9-naphthacenyl group, 1-pyrenyl group, 2-pyrenyl group, 4-pyrenyl group and fluoranthenyl group, each being optionally substituted; Ar′ is an aromatic group selected from the group consisting of a 1-naphthyl group, a 2-naphthyl group, a 1-anthryl group, a 2-anthryl group, a 1-phenanthryl group, a 2-phenanthryl group, a 3-phenanthryl group, a 4-phenanthryl group, a 1-naphthacenyl group, a 2-naphthacenyl group, a 9-naphthacenyl group, a 1-pyrenyl group, a 2-pyrenyl group, a 4-pyrenyl group and a fluoranthenyl group, each being optionally substituted; X represents a hydrogen or an aromatic group having 6 to 50 nuclear carbon atoms; a and b each represent an integer of 0 to 4; and n represents an integer of 1 to 3 and, when n represents 2 or 3, two or three groups represented by: may be a same with or different from each other.