Cover Picture: Theoretical Investigation of Generator–Collector Microwell Arrays for Improving Electroanalytical Selectivity: Application to Selective Dopamine Detection in the Presence of Ascorbic Acid (ChemPhysChem 9/2013)

Authors

  • Dr. Alexander Oleinick,

    1. CNRS UMR 8640 “PASTEUR”, Département de Chimie, Ecole Normale Supérieure, 24 rue Lhomond, Paris 75005 (France)
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  • Feng Zhu,

    1. State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen (China)
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  • Dr. Jiawei Yan,

    1. State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen (China)
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  • Prof. Dr. Bingwei Mao,

    1. State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen (China)
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  • Prof. Dr. Irina Svir ,

    Corresponding author
    1. CNRS UMR 8640 “PASTEUR”, Département de Chimie, Ecole Normale Supérieure, 24 rue Lhomond, Paris 75005 (France)
    2. Mathematical and Computer Modelling Laboratory, Kharkov National University of Radioelectronics, 14 Lenin Avenue, 61166 Kharkov (Ukraine)
    • CNRS UMR 8640 “PASTEUR”, Département de Chimie, Ecole Normale Supérieure, 24 rue Lhomond, Paris 75005 (France)

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  • Prof. Dr. Christian Amatore

    Corresponding author
    1. CNRS UMR 8640 “PASTEUR”, Département de Chimie, Ecole Normale Supérieure, 24 rue Lhomond, Paris 75005 (France)
    • CNRS UMR 8640 “PASTEUR”, Département de Chimie, Ecole Normale Supérieure, 24 rue Lhomond, Paris 75005 (France)

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Abstract

original image

Generator–collector microwell arrays show excellent performance for selective and sensitive detection of an analyte of interest in the presence of interferents, with redox waves occurring before that of the analyte. Due to the specific geometry of the array and the adequate control of each electrode potential, the analyte signal is increased by redox cycling, while that of the interferent is drastically reduced. The theory and simulations presented on p. 1887 by I. Svir, C. Amatore et al. not only allow proper modeling of the experimental results, but also open up new operating possibilities.

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