Inhibition of Electrochemical Fouling against Biomolecules on a Diamond-Like Carbon Electrode

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  • GOTO Takuya
    Graduate School of Material Science, University of Hyogo
  • YASUKAWA Tomoyuki
    Graduate School of Material Science, University of Hyogo JST-CREST
  • KANDA Kazuhiro
    Laboratory of Advanced Science and Technology for Industry, University of Hyogo
  • MATSUI Shinji
    Laboratory of Advanced Science and Technology for Industry, University of Hyogo
  • MIZUTANI Fumio
    Graduate School of Material Science, University of Hyogo

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Abstract

An anti-fouling ability of diamond-like carbon (DLC) electrodes to biological macromolecules has been investigated from a decrease in the electrochemical redox current of Fe(CN)64−/3−, used as a redox marker. A DLC electrode and a glassy carbon (GC) electrode were immersed in a solution containing bovine serum albumin (BSA) or DNA. The GCs treated with biological macromolecules gave rise to a significant decrease in the currents, while there was no signal decreases from the treated DLCs. The signals from the DLCs remain essentially unchanged for at least 24 h at a 10 mg/mL concentration level of BSA.

Journal

  • Analytical Sciences

    Analytical Sciences 27 (1), 91-94, 2011

    The Japan Society for Analytical Chemistry

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