Spectroelectrochemistry Study on the Electrochemical Reduction of Ethidium Bromide

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  • HU Xinhui
    Department of Chemistry, East China Normal University
  • WANG Qingjiang
    Department of Chemistry, East China Normal University
  • HE Pingang
    Department of Chemistry, East China Normal University
  • FANG Yuzhi
    Department of Chemistry, East China Normal University

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Abstract

The electrochemical reduction mechanism of ethidium bromide was first studied by spectroelectrochemistry. This reduction was proved to be a two-step process by cyclic voltammetry, differential pulse voltammetry and spectroelectrochemistry, in which each step was proved to be a one-electron transfer process by a spectropotentiostatic fluorescence technique. Hydroethidine was confirmed to be the final product by comparing the spectrum of the product of the electrochemical reduction to that of the product of the chemical reduction of ethidium bromide, and a carbon-centered radical was concluded to be a reasonable intermediate product during the electrochemical reduction of ethidium bromide.

Journal

  • Analytical Sciences

    Analytical Sciences 18 (6), 645-650, 2002

    The Japan Society for Analytical Chemistry

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