Monolayer protected gold nanoparticles with metal-ion binding sites: functional systems for chemosensing applications

In this review we describe the use of monolayer protected gold nanoparticles (Au NPs) for chemosensing applications. The attention is focused on a special subclass of Au NPs, namely those that contain binding sites for metal ions in the monolayer. It will be shown that these systems are very well-eq...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2015-06, Vol.51 (49), p.9922-9931
Main Authors: Pezzato, C, Maiti, S, Chen, J. L.-Y, Cazzolaro, A, Gobbo, C, Prins, L. J
Format: Article
Language:English
Subjects:
Binding sites
Complexation
Detection
Gold
Metal ions
Monolayers
Nanoparticles
Recognition
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Summary:In this review we describe the use of monolayer protected gold nanoparticles (Au NPs) for chemosensing applications. The attention is focused on a special subclass of Au NPs, namely those that contain binding sites for metal ions in the monolayer. It will be shown that these systems are very well-equipped for metal ion sensing as the complexation of the metal ions can affect the properties of the system in many ways leading to detectable output signals even at very low analyte concentrations. In addition, the presence of metal ions in the monolayer themselves can serve as recognition units for the highly selective interaction with small organic molecules or biomacromolecules. Key examples will be discussed that underscore the attractive properties and potential of this class of Au NPs as components of chemosensing assays. Au NPs containing binding sites for metal ions in the monolayer are attractive components of sensing assays.
ISSN:1359-7345
1364-548X
DOI:10.1039/c5cc00814j