Electropolymerization of 2,2′:5′,2″ terthiophene at an electrified liquid-liquid interface

Karine Gorgy, Florence Fusalba, Una Evans, Kyosti Kontturi, Vincent J. Cunnane

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    25 Citations (Scopus)

    Abstract

    A new way to synthetize conducting polymers has recently been reported and is investigated further in this study. Poly(2,2′:5′,2″ terthiophene) is electrochemically prepared at an electrified liquid-iquid interface between two immiscible electrolyte solutions (ITIES) and initiated by a heterogeneous electron transfer (HET) between an aqueous couple (Ce(IV)/Ce(III)) and the 2,2′:5′,2″ terthiophene monomer in 1,2-dichloroethane (1,2-DCE). In the present study, we suggest the growth mechanism for the polymer formation to be different than that observed at a metal electrode. Indeed, the nature of the interface generally regarded as a region formed by several mixed solvent layers, has a significant effect on the polymerization as well as on the electrochemical and physico-chemical properties of the resulting polymer. Galvanostatic polymerization, electrochemical impedance spectroscopy and FTIR spectroscopy performed on this polymer allow us to confirm this effect.

    Original languageEnglish
    Pages (from-to)365-373
    Number of pages9
    JournalSynthetic Metals
    Volume125
    Issue number3
    DOIs
    Publication statusPublished - 20 Dec 2001

    Keywords

    • Conducting polymers
    • Electrified liquid-liquid interface
    • Galvanostatic polymerization
    • Semi-conductors

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