Electrochemical Synthesis of Polypyrrole within Poly(4-butanesulfonate−cyclopentadithiophene) Films. A 1:1 Polypyrrole−Polythiophene Composite

Anodic coupling of dipyrrole on thin films of poly(4-butanesulfonate−cyclopentadithiophene) in acetonitrile produces polypyrrole within the polythiophene structure. Cyclic voltammetry, UV−vis spectroscopy and impedance measurements show that the polypyrrole chains are interwoven with the polythiophene chains in a polymeric composite with a pyrrole:thiophene ratio close to 1.