3,6-di(N-diphenylamino)-9-phenylcarbazole and its methyl-substituted derivative as novel hole-transporting amorphous molecular materials

Novel starburst molecules, 3,6-di(N-diphenylamino)-9-phenylcarbazole and its methyl-substituted derivative, have been synthesised and found to constitute novel hole-transporting amorphous molecular materials with glass transition temperatures above 105 degreesC as characterised by differential scanning calorimetry. Room temperature hole drift mobility in the amorphous film of 3,6-di(4-methyldiphenylamino)-9-phenylcarbazole established by the time of flight technique approaches 10(-3) cm(2)/V s at an applied electric field of 3.6 x 10(-5) V/cm. (C) 2002 Elsevier Science B.V. All rights reserved.