| Autor: |
M. Yu. Grosheva, Z. A. Rotenberg, E. V. Ovsyannikova, F. Jonas, Ninel M. Alpatova, V. V. Topolev, Stephan Kirchmeyer |
| Rok vydání: |
2004 |
| Předmět: |
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| Zdroj: |
Russian Journal of Electrochemistry. 40:917-923 |
| ISSN: |
1023-1935 |
| DOI: |
10.1023/b:ruel.0000041358.46069.d5 |
| Popis: |
A voltabsorptometry study of the redox behavior of poly(3,4-ethylenedioxythiophene) films in tetrabutylammonium tetrafluoroborate solutions in acetonitrile shows the polymer to exhibit heterogeneous properties when both reduced and oxidized. The measurements are taken at characteristic wavelengths λ selected on the basis of stationary absorption spectra. The reduced polymer's heterogeneity is explained under the assumption that the polymer contains simultaneously linear (λ = 530 nm) and spiral (λ = 660 nm) structures. The formation of two oxidized polymer states is proved experimentally. Both states presumably result from strong (λ = 880 nm) and weak (λ = 1050 nm) interactions between the anion and the positively charged polymer chain. The oxidized 880-nm state is shown to arise from the 660-nm state, whereas the 1050-nm state forms of the 530-nm state. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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