BENZIDINE DERIVATIVE, HOLE TRANSPORTING MATERIAL AND DERIVATIVE THEREOF OR LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE AND ELECTRONIC EQUIPMENT EACH USING HOLE TRANSPORTING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a substance having good heat resistance and capable of being used as a hole transporting material. SOLUTION: The benzidine derivative is represented by N,N'-bis(spiro-9,9'-bifluoren-2-yl)-N,N'-diphenylbenzidine. COPYRIGHT: (C)2006,JPO&NCIPI