Polaron Disproportionation Charge Transport in a Conducting Redox Polymer

Hao Huang, Christoffer Karlsson, Fikret Mamedov, Maria Strømme, Adolf Gogoll, Martin Sjödin

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    3 Citations (Scopus)

    Abstract

    Herein we report a mechanistic study of the charge transport in poly-3-((2,5-hydroquinone)vinyl)-1H-pyrrole by conductance measurements at various temperatures performed in situ during doping of the polypyrrole backbone in contact with an aqueous electrolyte. Charge transport was found to occur by electron hopping with associated electron transfer activation energies in the range of 0.08-0.2 eV. In situ electron paramagnetic resonance experiments indicated polarons as the dominant charge carriers and the charge transport was found to follow a second-order dependence with respect to the number of accumulated charges. Based on the findings, we present a polaron comproportionation/disproportionation model for electron conduction in poly-3-((2,5-hydroquinone)vinyl)-1H-pyrrole, thus, providing a complement to existing models for charge propagation in conducting polymers.

    Original languageEnglish
    Pages (from-to)13078-13083
    Number of pages6
    JournalJournal of Physical Chemistry C
    Volume121
    Issue number24
    DOIs
    Publication statusPublished - 2017 Jun 22

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    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Energy(all)
    • Physical and Theoretical Chemistry
    • Surfaces, Coatings and Films

    Cite this

    Huang, H., Karlsson, C., Mamedov, F., Strømme, M., Gogoll, A., & Sjödin, M. (2017). Polaron Disproportionation Charge Transport in a Conducting Redox Polymer. Journal of Physical Chemistry C, 121(24), 13078-13083. https://doi.org/10.1021/acs.jpcc.7b03671