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

1
Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520—IEMN, F-59000 Lille, France
2
CEST Competence Center for Electrochemical Surface Technology, 3430 Tulln, Austria
3
Univ. Rennes, CNRS, ISCR—UMR 6226, Campus de Beaulieu, F-35000 Rennes, France
4
AIT Austrian Institute of Technology, 3430 Tulln, Austria
*
Author to whom correspondence should be addressed.
Surfaces 2019, 2(1), 193-204; https://doi.org/10.3390/surfaces2010015
Received: 22 January 2019 / Revised: 6 March 2019 / Accepted: 8 March 2019 / Published: 18 March 2019
(This article belongs to the Special Issue Electrochemical Surface Science: Basics and Applications)
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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. View Full-Text
Keywords: reduced graphene oxide; electrophoretic deposition; surface chemistry; click chemistry reduced graphene oxide; electrophoretic deposition; surface chemistry; click chemistry
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Mishyn, V.; Aspermair, P.; Leroux, Y.; Happy, H.; Knoll, W.; Boukherroub, R.; Szunerits, S. “Click” Chemistry on Gold Electrodes Modified with Reduced Graphene Oxide by Electrophoretic Deposition. Surfaces 2019, 2, 193-204.

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