Thermally activated delayed fluorescence from pentacarbazorylbenzonitrile

Shuho Tanimoto, Takatsugu Suzuki, Hajime Nakanotani, and Chihaya Adachi

10.1246/cl.160290

A benzonitrile derivative substituted with five carbazole groups that emits thermally activated delayed fluorescence is synthesized and characterized. An organic light-emitting diode containing the benzonitrile derivative as an emissive dopant exhibits light-blue electroluminescence and a high external quantum efficiency of 14.8%.