Abstract
An electrochemical procedure for obtaining surface-enhanced Raman scattering (SERS) spectra of polythiophene films is described. During the electropolymerization process, which consists of using silver dodecylsulfate micellar aqueous solution mixed with bithiophene and LiClO4, silver cations are reduced, thus giving metallic silver particles embedded within the polybithiophene (PbT) film. Both doped and undoped PbT species display SERS spectra with enhancement factors varying between 40 and 200 with respect to the film prepared in sodium dodecylsulfate (i.e. without silver cations). Vibrational characterization of both doped and undoped species is then carried out and the polymer structural defects are evaluated. © 1998 John Wiley & Sons, Ltd.
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