Patent ID: 7951902

Claim:
A polymer, comprising: a unit derived from a substituted 3,4-propylenedioxythiophene monomer according to the structure (I): wherein each instance of R 1 , R 2 , R 3 , and R 4 independently is hydrogen; optionally substituted C 3 -C 20 alkyl, C 1 -C 20 haloalkyl, aryl, C 1 -C 20 alkoxy, C 1 -C 20 haloalkoxy, aryloxy, —C 1 -C 10 alkyl-O—C 1 -C 10 alkyl, —C 1 -C 10 alkyl-O-aryl, —C 1 -C 10 alkyl-aryl; or hydroxyl; with the proviso that at least one of a R 1 or a R 2 group is not hydrogen, and when R 1 or R 2 is an alkyl, at least two of the R 1 and R 2 groups are not hydrogen; wherein the C 3 -C 20 alkyl, C 1 -C 20 haloalkyl, aryl, C 1 -C 20 alkoxy, C 1 -C 20 haloalkoxy, aryloxy, —C 1 -C 10 alkyl-O—C 1 -C 10 alkyl, —C 1 -C 10 alkyl-O-aryl, or —C 1 -C 10 alkyl-aryl group each may be optionally substituted with one or more of C 1 -C 20 alkyl; aryl; halogen; hydroxyl; —N—(R 7 ) 2 wherein each R 7 is independently hydrogen or C 1 -C 6 alkyl; cyano; nitro; —COOH; —S(═O)C 0 -C 10 alkyl; or —S(═O) 2 C 0 -C 10 alkyl.