Electrochemical copolymerization of aniline and thiophene was investigated on beta-PbO2 electrode in acetonitrile. Optimum experimental conditions were determined forcopolymerization. Copolymer films synthesized on beta-PbO2 electrode were analyzed bycyclic voltammetry, dry conductivity measurements, FT-IR spectroscopy, elemental analysisand thermal methods. (C) 2005 Springer Science + Business Media, Inc.