Optical properties of conjugated polymer superlattices prepared by potential-programmed electropolymerization

Thin films of pyrrole and bithiophene copolymer, with an alternating layered structure prepared by the potential-programmed electropolymerization method, are analyzed by photoluminescence (PL) spectra. Optical and electrochemical methods are used in the estimation of band edges of thin films of the copolymers. A decrease of the thiophene fraction in the film shifted the PL spectra of the copolymers to higher energies, which corresponds to band structure changes.