Electrochemically synthesized polypyrrole films: effects of polymerization potential and electrolyte type

摘要: Polypyrrole films containing either the perchlorate or p-toluenesulfonate ion were prepared from an aqueous solution by applying anodic potential in range 0.6–2.0 V (relative to a saturated calomel electrode). The effects of applied on electropolymerization, morphology, chemical structure, electrochemical properties and tensile modulus have been investigated. chronoamperometric response pyrrole electropolymerization depends not counterion. structure polypyrrole depend polymerization as well An empirical expression relating peak current scan rate charge passed during is proposed. This relationship provides some insight into nature switching reaction. For perchlorate, concentration dicationic species dipolarons decreases increases 0.6 1.0 V. large at 0.75 responsible for second reduction observed cyclic voltammograms.