Abstract
Registration of the conductance after the end of the electrochemical polymerisation of 3-methylthiophene (PMT) indicated a large conductance increase at open circuit. Further in situ conductance measurements with the polymeric film in Bu 4NPF 6/acetonitrile base solution provided direct evidence for that — after the oxidation of the film — the final achievement, the accomplishment of the state of high conduction is not necessarily coupled with current flow any more. The non-faradaic step which may explain this observation is described as a chemical reorganisation within the film, which involves the transformation of solvated polymer segments to a more conjugated, non-solvated form.
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