"Click" Chemistry on Gold Electrodes Modified with Reduced Graphene Oxide by Electrophoretic Deposition

Vladyslav Mishyn, Patrik Aspermair, Yann R. Leroux, Henri Happy, Wolfgang Knoll, Rabah Boukherroub, Sabine Szunerits

    Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

    Abstract

    The coating of electrical interfaces with reduced graphene oxide (rGO) films and their subsequent chemical modification are essential steps in the fabrication of graphene-based sensing platforms. In this work, electrophoretic deposition (EPD) of graphene oxide at 2.5 V for 300 s followed by vapor treatment were employed to coat gold electrodes uniformly with rGO. These interfaces showed excellent electron transfer characteristics for redox mediators such as ferrocene methanol and potassium ferrocyanide. Functional groups were integrated onto the Au/rGO electrodes by the electro-reduction of an aryldiazonium salt, 4-((triisopropylsilyl)ethylenyl)benzenediazonium tetrafluoroborate (TIPS-Eth-ArN) in our case. Chemical deprotection of the triisopropylsilyl function resulted in propargyl-terminated Au/rGO electrodes to which azidomethylferrocene was chemically linked using the Cu(I) catalyzed "click" chemistry.
    OriginalspracheEnglisch
    Seiten (von - bis)193-204
    Seitenumfang12
    FachzeitschriftSurfaces
    Volume2
    Issue1
    DOIs
    PublikationsstatusVeröffentlicht - 2019

    Research Field

    • Biosensor Technologies

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