The polythiophene paradox

Cyclic voltammetry and constant current oxidation show that polythiophene is not stable at potentials used for its synthesis. In contrast to bithiophene electropolymerization of thiophene is very concentration dependent. Even at high monomer concentrations yields for polythiophene are less than 60%...

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Bibliographic Details
Published in:Synthetic metals 1989-01, Vol.28 (1), p.263-268
Main Authors: Krische, B., Zagorska, M.
Format: Article
Language:English
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Summary:Cyclic voltammetry and constant current oxidation show that polythiophene is not stable at potentials used for its synthesis. In contrast to bithiophene electropolymerization of thiophene is very concentration dependent. Even at high monomer concentrations yields for polythiophene are less than 60% of those for polybithiophene (corrected for the bigger monomer). UV/VIS and IR spectra for neutral and overoxidized polythiophene or polybithiophene are almost identical. From this we conclude that the polymer from thiophene electrooxidation is not the simple poly(2,5-thienylene) but a mixture of that and its overoxidation product.
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(89)90531-6