Unusual electrochemical response of oligoalkylthiophene films : Involvement of bipolarons
MCLC_455_367.pdf 239 KB
Cyclic voltammograms of π-conjugated oligoalkylthiophene (13T) films are found to show two oxidation peaks during the 1st potential cycling up to 0.8 V. In the subsequent cycles, however, the 2nd oxidation peak disappears completely and the 1st peak shifts by ca. 0.1 V to the cathodic direction. This finding along with spectroscopic measurements of 13T film before and after electrochemical stimulus suggest first that two different phases to be oxidized at separate potentials coexist in a pristine 13T film and second that one phase can be switched to the other by being oxidized to generate bipolarons.
Molecular Crystals and Liquid Crystals
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Taylor and Francis
Copyright (c) 2006 Taylor and Francis This is an electronic version of an article published in "Molecular Crystals and Liquid Crystals Vol.455 No.1 pp.367-372" Molecular Crystals and Liquid Crystals is available at: http://dx.doi.org/10.1080/15421400600698972
Graduate School of Engineering