9,9-Dimethyl-N,N'-bis(3-methylphenyl)-N,N'-diphenyl-9H-fluorene-2,7-diamine

9,9-Dimethyl-N,N''-bis(3-methylphenyl)-N,N''-diphenyl-9H-fluorene-2,7-diamine is used in the preparation of 2,7-bis(diarylamino)-9,9-dimethylfluorenes as hole-transport materials for organic light-emitting diodes.