LIGHT EMITTING MATERIAL FOR USE AS- HOST DOPANT IN EMISSIVE LAYER FOR OLEDS

摘要

A light emitting material comprising a complex of formula (I) (L1)x - M - (L2)y wherein L1 is a mono-anionic bidentate carbon-coordinating ligand comprising the structural element (II) in a ring system, wherein R1 is a substituent selected from the group consisting of R1-1 to R1-8 the use thereof as emissive materials in organic light emitting devices and organic light emitting devices comprising said emissive material.