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Plasmonic colorimetry: visual detection of environmentally relevant species

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  • Fei Yan

Abstract

Colorimetric detection of chemical species based on specially tailored noble metal nanoparticles is garnering increasing interest in the scientific community. The aggregation/dispersion of unmodified or ligand-functionalised plasmonic nanostructures upon binding to an environmental pollutant results in a colorimetric response, which can be easily discerned with the naked eye. This review offers a snapshot of recent advances in this field of plasmonic colorimetry. The identification and detection of anionic, neutral and cationic chemical species among a wide variety of other environmentally significant pollutants remains a particularly important but difficult challenge. The optical transduction of target-ligand interactions at the surface of plasmonic nanostructures via a distinct colour change is very attractive for the development of environmental sensors. Such a litmus test-type colorimetric transduction sensing scheme offers extreme simplicity and excellent robustness for practical applications.

Suggested Citation

  • Fei Yan, 2013. "Plasmonic colorimetry: visual detection of environmentally relevant species," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 16(1/2), pages 49-64.
    • Handle: RePEc:ids:ijetma:v:16:y:2013:i:1/2:p:49-64
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