p-type doping properties and electronic states of conducting poly(trans-1,2-di(2-thienyl)ethylene and poly(1,4-di(2-thienyl)-1,3-butadiene)
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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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