Localized surface plasmon resonance sensor based on Ag-PVA nanocomposite thin films

Rachid Gradess; Rafael Abargues; Abderrahim Habbou; Josep Canet-Ferrer; Esteban Pedrueza; Aidan Russell; José L. Valdés; Juan P. Martínez-Pastor

doi:10.1039/B910020B

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Journal of Materials Chemistry

Issue 48, 2009

Journal of Materials Chemistry was published between 1991 and 2012. From issue 1, 2013, it was replaced by three new journals: Journal of Materials Chemistry A, B and C

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Paper

Localized surface plasmon resonance sensor based on Ag-PVA nanocomposite thin films

Rachid Gradess,^a^b Rafael Abargues,*^a Abderrahim Habbou,^b Josep Canet-Ferrer,^a Esteban Pedrueza,^a Aidan Russell,^a José L. Valdés^a and Juan P. Martínez-Pastor^a

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Material Science Institute, University of Valencia, P.O. Box 22085, Valencia, Spain
E-mail: Rafael.Abargues@uv.es

Department of Physics, Faculty of Sciences and Techniques, B.P. 146, Mohammedia, Morocco

J. Mater. Chem., 2009,19, 9233-9240

DOI: 10.1039/B910020B
Received 20 May 2009, Accepted 06 Oct 2009
First published online 30 Oct 2009

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Abstract
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In this work we demonstrate the use of nanocomposite thin films of poly(vinyl alcohol) with embedded silver NPs for chemosensing purposes. Silver NPs are in situ synthesized inside polyvinyl alcohol during the bake step of the formation of a nanocomposite thin film. The polymer in the nanocomposite provides an appropriate chemical and electromagnetic environment for metal NPs in order to interact with and hence detect the chemical species. A limit of detection below 20 nM is found when detecting 2-mercaptoethanol as the analyte, when measuring spectral changes (peak wavelength, linewidth and intensity) in the Localized Surface Plasmon Resonance. Potential qualitative and semi-quantitative sensors based on such nanocomposites would be easy-to-prepare, easy-to-use and low-cost, which are the basis of a fully disposable sensing platform technology.

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Rachid Gradess
Rafael Abargues
Abderrahim Habbou
Josep Canet-Ferrer
Esteban Pedrueza
Aidan Russell
José L. Valdés
Juan P. Martínez-Pastor

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