UV-vis-NIR studies of new PANI/dopant/solvent associations with metallic-like behaviour

The UV-vis-NIR studies of undoped and doped PANI solutions in m-cresol and in selected fluorinated alcohols are presented. It is demonstrated that car eful selection of dopant/solvent couples leads to spectra characteristic of different degree of charge carrier delocalization in between the two extre me cases of localized and delocalized polaron models. The obtained results underline the importance of the strategy based on the molecular recognition concept in the preparation of PANI with metallic-type of conductivity.