In situ XAS characterization of the electrochemical insertion of copper in polypyrrole films

We report the electrochemical insertion of copper in polypyrrole films followed by XAS spectroscopy. Depending on the applied potential the copper remains as an ionic form like Cu⁺ⁿ-(OSO₃^-)_n. For more reductive potentials metal particles are synthesized. Small particles with an estimated average diameter of 20 Å were obtained.