Electropolymerization and characterization of poly[4,4'-bis(butylsulphanil)-2,2'-bithiophene]

Electrochemical properties of electrogenerated poly[4,4'-bis(butylsulphanil)-2,2'-bithiophene] have been studied, with particular attention to the charge-discharge processes. The possibility of both p- and n-doping is indicated. Doping and relevant de-doping processes of the specific polymer have also been considered in the context of the more general, still un-solved problem of the analysis of the mechanisms that are operative in the case of simple polythiophenes. In situ spectroelectrochemical measurements have been used to support the electrochemical results and both in situ UV-visible-NIR spectroscopy on neutral, p- and n-doped forms of the polymer, and ex situ IR measurements have been performed.