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Issue 4, 2011
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Mesoporous silica-coated gold nanorods: towards sensitive colorimetric sensing of ascorbic acidvia target-induced silver overcoating

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Abstract

This article describes a nonaggregation-based colorimetric assay of ascorbic acid by tailoring the optical properties of mesoporous silica-coated gold nanorods (MS GNRs) viasilver overcoating. The colorimetric measurement of ascorbic acid (AA) concentration strongly relies on the fact that the blue shift effect of localized surface plasmon resonance (LSPR) peak of MS GNRs is gradually enlarged with the increase of AA amount. The limit of detection is determined to be 49 nM, which is comparable to that of quantum dots (QDs)-based fluorimetric methods.

Graphical abstract: Mesoporous silica-coated gold nanorods: towards sensitive colorimetric sensing of ascorbic acidvia target-induced silver overcoating

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Publication details

The article was received on 14 Nov 2010, accepted on 10 Jan 2011 and first published on 18 Feb 2011


Article type: Paper
DOI: 10.1039/C0NR00863J
Citation: Nanoscale, 2011,3, 1756-1759
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    Mesoporous silica-coated gold nanorods: towards sensitive colorimetric sensing of ascorbic acidvia target-induced silver overcoating

    G. Wang, Z. Chen and L. Chen, Nanoscale, 2011, 3, 1756
    DOI: 10.1039/C0NR00863J

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