| abstract |
A novel high molecular weight and high conductivity self-doped polythiophene is provided. A thiophene in which one hydrogen atom of an ethylene group of 3,4-ethylenedioxythiophene is substituted with an alkyl group having an sulfonate group or an alkyleneoxymethyl group at the terminal has a bond at the 1,5-position. A polythiophene having a repeating structure and a repeating structure in which the thiophene ring is charged to a cation, and having a weight average molecular weight of 20,000 or more. [Selection figure] None |