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 Polymer based silver nanocomposites as versatile solid film and aqueous emulsion SERS substrates
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/6254

title: Polymer based silver nanocomposites as versatile solid film and aqueous emulsion SERS substrates
authors: Fateixa, S
Girao, AV
Nogueira, HIS
Trindade, T
issue date: 30-Aug-2011
publisher: Royal Society of Chemistry
abstract: Nanocomposites containing Ag nanoparticles (average diameter similar to 11 nm) dispersed in poly(tertbutylacrylate) were prepared by in situ polymerization via miniemulsions and constitute active and versatile SERS substrates. The use of this synthetic strategy enables the dual use of the final composites as SERS substrates, both as aqueous emulsions and as cast films, shown here by several measurements using thiosalicylic acid as the testing analyte. The main advantage of these types of materials is related to the potential to scale up and the widespread use of handy substrates, using technology already available. This requires homogeneous composite substrates with SERS activity and this was demonstrated here by means of confocal Raman microscopy. Finally, a series of experiments were carried out on Ag/polymer nanocomposites submitted to temperature variations below and above the polymer glass transition temperature (T(g)) in order to conclude about the effect of temperature processing conditions on the composites' SERS activity.
URI: http://hdl.handle.net/10773/6254
ISSN: 0959-9428
publisher version/DOI: dx.doi.org/10.1039/C1JM12444G
source: Journal Of Materials Chemistry
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