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    Ionophore-Assisted Electrochemistry of Neutral Molecules: Oxidation of Hydrogen in an Ionic Liquid Electrolyte

    79203.pdf (1.197Mb)
    Access Status
    Open access
    Authors
    Wandt, J.
    Lee, Juni
    Arrigan, Damien
    Silvester-Dean, Debbie
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Wandt, J. and Lee, J. and Arrigan, D.W.M. and Silvester, D.S. 2019. Ionophore-Assisted Electrochemistry of Neutral Molecules: Oxidation of Hydrogen in an Ionic Liquid Electrolyte. Journal of Physical Chemistry Letters. 10 (21): pp. 6910-6914.
    Source Title
    Journal of Physical Chemistry Letters
    DOI
    10.1021/acs.jpclett.9b02666
    ISSN
    1948-7185
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Funding and Sponsorship
    https://purl.org/au-research/grants/arc/FT170100315
    Remarks

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry Letters, copyright © American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpclett.9b02666.

    URI
    http://hdl.handle.net/20.500.11937/79101
    Collection
    • Curtin Research Publications
    Abstract

    Copyright © 2019 American Chemical Society. The electrochemical properties of gas molecules are of great interest for both fundamental and applied research. In this study, we introduce a novel concept to systematically alter the electrochemical behavior and, in particular, the redox potential of neutral gas molecules. The concept is based on the use of an ion-binding agent, or "ionophore", to bind and stabilize the ionic electrochemical reaction product. We demonstrate that the ionophore-assisted electrochemical oxidation of hydrogen in a room-temperature ionic liquid electrolyte is shifted by almost 1 V toward more negative potentials in comparison to an ionophore-free electrolyte. The altered electrochemical response in the presence of the ionophore not only yields insights into the reaction mechanism but also can be used to determine the diffusion coefficient of the ionophore species. This ionophore-modulated electrochemistry of neutral gas molecules opens up new avenues for the development of highly selective electrochemical sensors.

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