Electrochemical Tip-Enhanced Raman Spectroscopy for the Elucidation of Complex Electrochemical Reactions - Sorbonne Université Access content directly
Journal Articles Analytical Chemistry Year : 2024

Electrochemical Tip-Enhanced Raman Spectroscopy for the Elucidation of Complex Electrochemical Reactions

Abstract

Tip-enhanced Raman spectroscopy (TERS) is an emerging nanospectroscopy technique whose implementation in situ/operando, namely, in the liquid phase and under electrochemical polarization (EC-TERS), remains challenging. The investigation of electrochemical processes at the nanoscale, in real time and over wide potential windows can be of particular interest but tedious when using EC-STM-TERS. This approach was successfully applied to the investigation of a well-established but yet complex system (a thiolated nitrobenzene derivative 4-NBM) whose reduction mechanism involves various multistep reaction paths, most likely pH-dependent. In light of the EC-TERS analysis carried out under specific conditions limiting the full (6 e–/6 H+) electrochemical reduction of 4-NBM and its photocoupling, a bimolecular electrochemical reaction path, difficult to evidence from the electrochemical response only, is proposed.
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Dates and versions

hal-04468780 , version 1 (20-02-2024)

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Alice Fiocco, Aja Pavlic, Frédéric Kanoufi, Emmanuel Maisonhaute, Jean-Marc Noël, et al.. Electrochemical Tip-Enhanced Raman Spectroscopy for the Elucidation of Complex Electrochemical Reactions. Analytical Chemistry, 2024, 96 (7), pp.2791-2798. ⟨10.1021/acs.analchem.3c02601⟩. ⟨hal-04468780⟩
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