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Synthesis and Optical Properties of SERS-active Nanocomposite Microspheres

Published online by Cambridge University Press:  01 February 2011

Abdiaziz Farah,
Sheng Dai,
Baker Jawabrah Al-Hourani,
Juan P. Bravo-Vasquez,
Jae-Young Cho and
Hicham Fenniri
Abdiaziz Farah
Affiliation:
afarah@ualberta.ca, University of Alberta, Chemistry, 11227 Saskatchewan Dr, Edmonton, T6G 2G2, Canada, 780 641-1756, 780 641-1601
Sheng Dai
Affiliation:
sheng.dai@nrc.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr., Edmonton, T6G 2G2, Canada
Baker Jawabrah Al-Hourani
Affiliation:
sigmatropic2002@yahoo.com, National Institute for Nanotechnology, 11421 Saskatchewan Dr., Edmonton, T6G 2G2, Canada
Juan P. Bravo-Vasquez
Affiliation:
Juan-Pablo.Bravo-Vasquez@nrc.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr., Edmonton, T6G 2G2, Canada
Jae-Young Cho
Affiliation:
Jae-young.Cho@nrc.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr., Edmonton, T6G 2G2, Canada
Hicham Fenniri
Affiliation:
Hicham.fenniri@nrc.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr., Edmonton, T6G 2G2, Canada
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Abstract

An approach to prepare metal nanoparticle-polymer microbeads with integrated Raman tags using SERS as reliable diagnostic tool is reported. In essence, spectroscopically encoded (4-thioacetyl)styrenes were assembled on well-characterized 50 nm Au NPs and subjected to suspension polymerization conditions using styrene and methacrylic acid as comonomers and divinylbenzene as crosslinker. The resulting metal embedded nanocomposites were characterized by SEM, TEM, DSC, TGA, Raman and SERS to determine their morphology, particle size, composition, thermal stability and their optical and electronic properties.

Keywords

compositecolloidoptical properties

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