Electrochemical study on the growth of multilayer film electrodes of the conducting polymers PPP, POT and of the copolymer of PPP and POT

摘要

Multilayer polymer film electrodes were prepared from the electrochemically synthesized conducting polymers poly (paraphenylene), PPP, poly(3-octylthiophene), POT and from the electrochemically synthesized copolymer of PPP and POT. The electrochemcial behavior of the multilayer film electrodes made from PPP and POT is compared with the response of a copolymer layer. The structure of the copolymer film colud be changed by varying the polymerization potential and the concentration as well as the ratio of the concentration of the two starting materials. Due to the slightly lower (0.15 V) oxidation potential of the POT monomer in comparison to the oxidation potential of biphenyl. POT is usually present to a higher extent than PPP in the electrochemically produced copolymer. The copolymer electrodes, the single polymer film layers and the multilayer polymer film electrodes showed different electrochemical response of the charging-discharing cycle.