Patent ID: 7538175

Claim:
A phenolic hole transport polymer represented by Formula (III): wherein R 2 , R 3 , and R 4 are independently selected from carbonylalkyl having from about 1 to about 20 carbon atoms, carboxylalkyl having from about 1 to about 20 carbon atoms, amine, hydroxyl, alkoxy having from about 1 to about 20 carbon atoms, aryloxy having from about 6 to about 60 carbon atoms, alkyl having from about 1 to about 30 carbon atoms, aryl having from about 6 to about 60 carbon atoms, halo-substituted alkyl having from about 1 to about 20 carbon atoms, hydrogen, and halogen; D is alkylene containing from 1 to 15 carbon atoms and optionally containing a heteroatom selected from the group consisting of oxygen sulfur, silicon, and nitrogen; Ar is a substituted or unsubstituted aryl or arylene group; and n is 2 to about 275.