Abstract: Improved organophotoreceptors have: (a) a charge transport compound having the formula where R1 and R2 are, independently, an (N,N-disubstituted) arylamine group, such as a julolidine group, a triphenyl amine group, or an N-substituted carbazole group; R3 and R4 are, independently, an alkylsulfonylphenyl group; and X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups is optionally replaced by an oxygen atom, a carbonyl group, urethane, urea, an ester group, a —NR5 group, a CHR6 group, or a CR7R8 group where R5, R6, R7, and R8 are, independently, H, an alkyl group, or aryl group; (b) a charge generating compound; and (c) an electrically conductive substrate over which the charge transport compound and the charge generating compound are located.