Characterization of solution and solid state properties of polyaniline processed from trifluoroacetic acid

Abstract

In this work are reported properties of polyaniline processed from trifluoroacetic acid. Films obtained by simple drop casting were smooth and defectless. Features like absorption in range of UV–vis-NIR, mid-IR and electrical conductivity are discussed. The highest electrical conductivity of such films was found equal to 65 S/cm. It was observed a striking feature—successive colour transition from cyan to deep green when the solvent was dried out from the cast film.