Bisaminophenylmethane compounds and charge transport materials, organic electroluminescent device materials and organic electroluminescent devices using the same

摘要

PROBLEM TO BE SOLVED: To provide an organoelectroluminescent element which is driven in a high efficiency at a low voltage, is excellent in heat resistance and driving stability, and maintains stable light-emitting characteristics for a long time even at a high temperature.;SOLUTION: A new bisaminophenylmethane compound represented by general formula (I) (wherein R¹ and R² are each a hydrogen atom, a hydroxy group, an alkyl group, an alkenyl group, an aromatic hydrocarbon group, an aromatic heterocyclic group, or the like; R³-R⁶ are each an aromatic hydrocarbon group, an aromatic heterocyclic group, or the like, provided that at least one of R¹-R⁶ is an optionally substituted fused ring group formed by fusing at least three rings, and ring a and ring b are each an optionally substituted benzene ring) is provided. The organoelectroluminescent element has a layer containing this bisaminophenylmethane compound.;COPYRIGHT: (C)2004,JPO