Patent ID: 7700248

Claim:
An electrophotographic element comprising: an electrically conducting layer; a charge generating layer overlying said electrically conducting layer; and a first charge transport layer overlying said electrically conducting layer, said first charge transport layer comprising the condensed reaction product of a charge transport polymer comprising structural units having the formula: wherein: A is a tertiary arylamine charge transport moiety; X is a divalent bridging moiety; Y is a divalent bridging moiety; R′ 1 and R′ 2 are independently hydrogen or a C 1-4 alkyl; G is independently a hydrolyzable group; R′ 3 is independently a C 1-18 alkyl, a C 1-10 fluoroalkyl, or a C 6-12 substituted or unsubstituted aryl; c is an integer from 1 to 3; d is 0 or 1; a is a mole fraction of from about 0.01 to about 0.99; b is a mole fraction of from about 0.99 to about 0.01; and a+b is 1.00 or less, with optionally at least one additional silane monomer having at least one functional group thereon; and further comprising a second charge transport layer disposed between said charge generating layer and said first charge transport layer wherein said second charge transport layer comprises the charge transport polymer.