IN-SITU RAMAN DIFFUSION STUDY OF POLYANIL INE AND POLY(O-TOLUIDINE)

Spectroelectrochemical studies of polyaniline and poly(o-toluidine) we re carried out in 1M HCl aqueous solution. Uv-vis-nir and Raman scatte ring were used during electrochemical oxidation and protonation. The s pectra of electrochemically prepared film were recorded for different electrode polarisation potentials. It has been found that resonant con ditions which are being constantly changed during electrochemical cycl ing strongly influence the resulting Raman spectra. Based on previous calculations, an assignment of Raman vibrational modes in poly(o-tolui dine) is proposed. The results clearly show that due to symmetry reaso ns selected vibrational modes in poly(o-toluidine) remain Raman inacti ve.