| abstract |
An improved organophotoreceptor comprises annelectrically conductive substrate and a photoconductivenelement on the electrically conductive substrate whereinnthe photoconductive element comprisesn a) a charge transport material with the followingnformulan nwhere R 1 and R 2 are, independently, a carbazolyl group, ann(N,N-disubstituted) aminoaryl group, such as a triphenylnamine group, or a julolidine group, and R 3 and R 4 are,nindependently, hydrogen, branched or linear alkyl groupn(e.g., a C 1 -C 20 alkyl group), branched or linearnunsaturated hydrocarbon group, cycloalkyl group (e.g.ncyclohexyl group), or aryl group (e.g., phenyl group,nnaphthyl group, stilbenyl group, (9H-fluoren-9-ylidene)benzylngroup, or tolanyl group); (b) an optional charge transport compound; and (c) a charge generating compound. |