Electrochemical and spectroscopic characteristics of copolymers electrochemically synthesized from 3-methylthiophene and 3,4-ethylenedioxy thiophene

The copolymers poly(3-methylthiophene-co-3,4-ethylenedioxythiophene) were prepared from mixtures of 3-methylthiophene and 3,4-ethylenedioxythiophene via electrochemical oxidation. Various concentrations of the monomers in the mixture at a fixed polymerization potential, or fixed concentrations of the monomers in the mixture at various polymerization potentials were used to produce copolymers. Electrochemical and spectroscopic characterizations demonstrate the possibility of modulating continuously the electrochemical and optical properties of the individual polymers.