Glass-forming carbazolylidene-containing hydrazones as hole-transporting materials

The synthesis, optical, thermal and photoelectrical properties of carbazole- and phenothiazine-containing hydrazones are reported. The ionization potentials of the films of the hydrazones, measured by the electron photoemission technique, range from 5.20 to 5.60 eV. Room temperature time-of-flight hole mobilities in the solid solutions of carbazole phenothiazine and carbazole carbazole hydrazones in bisphenol-Z polycarbonate exceeded 10−5 cm2/(V s) at high applied electric fields.