Light-emitting devices

Abstract

This invention provides a novel arylamine compound with a low refractive index. The present invention provides an arylamine compound having at least one aromatic group, said aromatic group having a first benzene ring, a second benzene ring, and a third benzene ring, and at least three alkyl groups, wherein the first to third benzene rings are directly bonded sequentially, the first benzene ring is bonded to a nitrogen atom of an amine, the first benzene ring may also have a substituted or unsubstituted phenyl group, the second or third benzene ring may also have an alkylated phenyl group, and two or more of the first to third benzene rings are independently bonded at positions 1 and 3 to other benzene rings, the benzene ring of the alkylated phenyl group, any one of the at least three alkyl groups, or the nitrogen atom of the amine.

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