| abstract |
An organophotoreceptor that includes: n (a) a charge transport compound having the formula n n n where n R 1 and R 2 are, independently, a fluorenyl group; n R 3 and R4 are, independently, hydrogen, an alkyl group, an aryl group, or a heterocyclic group; and n X is a sulfonyldiphenylene group; n (b) a charge generating compound; and n (c) an electrically conductive substrate. |