This investigation is concerned with the effect of thiophene monomer structures on the electrochemical behavior and physical characteristics of electropolymerized poly(thiophenes) and various poly(3‐methylthiophenes). These variations in polymer structure were achieved by employing thiophene and 3‐methylthiophene oligomers of different unit sizes and substitution patterns as the starting "monomers." The relative redox characteristics of the "monomers" were deduced from the measured current maximum values of the electro‐oxidation potentials. Electrochemical oxidation of the monomer yields electrically conducting polymers that exhibit internal redox properties unique for each type of starting "monomer". Scanning electron micrographs of the oxidized films are shown.
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Laguren‐Davidson et al. (1988) studied this question.