Patent ID: 6994805

Claim:
A polymer with electrical semiconductor characteristics, comprising a polythiophene backbone having a n-electron system and a Formula I wherein R 1 and R 2 are independently selected from the group of substituents consisting of a hydrogen atom and a monovalent residue having a n-conjugated electron system expanding said n-electron system of said polythiophene backbone; at least one of HR 1 and HR 2 have electrical semiconductor characteristics and R 1 and R 2 lend electrical semiconductor characteristics to said Formula I, provided at least one of R 1 and R 2 is independently selected from the group consisting of wherein R 3 is a substituent selected from the group consisting of a hydrogen atom, a halogen atom, and a monovalent hydrocarbon residue; R 4 is a substituent independently selected from the group consisting of hydrogen atom and a monovalent hydrocarbon residue; R 5 is a substituent selected from the group consisting of a hydrogen atom and a monovalent hydrocarbon residue; m is a whole number from 1 to 6; and p is a whole number from 0 to 3; E 1 and E 2 are independently selected from the group consisting of an arbitrary terminal group and a free electron; and n is a whole number from 1 to 1,000.