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Issue 35, 2011
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The use of cucurbit[8]uril host–guest interactions in the development of an electrochemical sensor: characterization and application to tryptophan determination

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Abstract

The host–guest properties of cucurbit[8]uril have been employed to modify a conventional electrode surface in order to increase its analytical performance. The new electrode surface has been characterized, and the influence of different experimental parameters on complex formation has been investigated in detail using different electrochemical techniques. The results of electrochemical spectroscopic impedance studies are in good agreement with the electrochemical behaviour shown by this electrode material in terms of the molecular-recognition properties of this nanosize receptor to positively or negatively charged guests. The electrode developed herein has enhanced sensitivity and selectivity, as demonstrated by its application to the determination of tryptophan in real samples, with a good accuracy and precision and no need for any additional sample treatment.

Graphical abstract: The use of cucurbit[8]uril host–guest interactions in the development of an electrochemical sensor: characterization and application to tryptophan determination

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Publication details

The article was received on 10 May 2011, accepted on 28 Jun 2011 and first published on 01 Aug 2011


Article type: Paper
DOI: 10.1039/C1JM12063H
Citation: J. Mater. Chem., 2011,21, 13657-13663
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    The use of cucurbit[8]uril host–guest interactions in the development of an electrochemical sensor: characterization and application to tryptophan determination

    M. del Pozo, P. Hernández, L. Hernández and C. Quintana, J. Mater. Chem., 2011, 21, 13657
    DOI: 10.1039/C1JM12063H

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