Add time:08/05/2019         Source:sciencedirect.com

The electrochemical and optical properties in poly(trans-1,2-di(2-thienyl)ethylene),trans-PTE, and poly(1,4-di(2-thienyl)-13-butadiene), PTB, in comparison with those of polythiophene, PT, during electrochemical p-type doping have been investigated by the cyclic voltammetry and in situ optical-absorption-spectrum measurements. The evolution of localized states is evidenced by the spectral change associating with doping. Preparation of high quality conducting poly(cis-1,2-di(2-thienyl)ethylene), cis-PTE, from the electrochemical polymerization of cis-1,2-di(2-thienyl)ethylene was also tried. However, the synthesized polymer was not cis-PTE but trans-PTE. These results are discussed in terms of polaron and/or bipolaron models.

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