AROMATIC AMINE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME

摘要

Disclosed is an aromatic amine derivative represented by the general formula (1) or (2) below and having a diphenylamino group wherein a cycloalkyl group is bonded to a benzene ring. Also disclosed is an organic electroluminescent device wherein an organic thin film composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode, and at least one layer of the organic thin film contains the aromatic amine derivative by itself or as a component of a mixture. This organic electroluminescent device has long life and high luminous efficiency, and is capable of emitting blue light with high color purity. The aromatic amine derivative enables to realize such an organic electroluminescent device. (1) (2) (In the general formula (1), A₁-A₄ respectively represent a hydrogen atom or the like, and a-d respectively represent an integer of 0-5. In this connection, at least one of a-d represents an integer of not less than 1, and in that case at least one of A₁-A₄ represents a cycloalkyl group. In the general formula (2), A₅-A₈ respectively represent a hydrogen atom or the like, e-h respectively represent an integer of 0-5, and X₁ and X₂ respectively represent an arylene group. In this connection, at least one of e-h represents an integer of not less than 1, and in that case at least one of A₅-A₈ represents a cycloalkyl group.)