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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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A multi-component optimisation of experimental parameters for maximising SERS enhancements

Yaffe, Nicola R. and Ingram, Andrew and Graham, Duncan and Blanch, Ewan W. (2010) A multi-component optimisation of experimental parameters for maximising SERS enhancements. Journal of Raman Spectroscopy, 41 (6). pp. 618-623. ISSN 0377-0486

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Abstract

We present a multi-component optimisation strategy for a range of commonly used Ag colloids as surface-enhanced Raman scattering (SERS) spectroscopy substrates. The concentration-dependent interactions of a wide range of parameters, including colloid and aggregating agent species, were considered in order to achieve optimal SERS enhancements. Few papers in the literature discuss the optimisation of these parameters, never mind multi-component optimisation, and suboptimal responses result in SERS not being utilised to its true capabilities. Significant differences in enhancement factor were observed as a consequence of colloid-aggregating agent interactions and these are shown to be analyte specific. Both the cation and anion of the aggregating agent were found to play an important role in the optimisation process. We show that through the optimisation of experimental conditions, the reliability and applicability of SERS can be significantly improved. Copyright (C) 2009 John Wiley & Sons, Ltd.