Patent ID: 8067264

Claim:
An electronic device containing a regioregular polythiophene wherein R represents a side chain selected from alkyl, alkoxyalkyl, siloxy-substituted alkyl, perhaloalkyl, and polyether; m represents the number of R substituents and is 1 or 2; A is a divalent linkage comprising from about 1 to about 40 carbon atoms; x and y are the number of R-substituted thienylene moieties and the number of unsubstituted thienylene moieties, respectively, each of which is from 1 to 5; z is the number of divalent linkages A and is zero or 1; and n is the degree of polymerization; wherein the device is comprised of a substrate, a gate electrode, a gate dielectric layer, a source electrode and a drain electrode, and a semiconductor layer; wherein the semiconductor layer comprises the polythiophene and is in contact with the source electrode, the drain electrode, and optionally the gate dielectric layer.