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Issue 35, 2006
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Low concentration rhodamine 6G observed by surface-enhanced Raman scattering on optimally electrochemically roughened silver substrates

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Abstract

In this work, the effects of preparation conditions in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) were investigated. Based on this prepared substrate, the practical limit of detection (LOD) of rhodamine 6G (R6G) can be reduced by six orders of magnitude from 2 × 10−9 to 2 × 10−15 M, as compared with that of R6G adsorbed on a general procedure-prepared roughened Ag substrate. Further investigations indicate that the content and the oxidation state of Cl on the roughened Ag substrate demonstrate decided effects on the observed SERS.

Graphical abstract: Low concentration rhodamine 6G observed by surface-enhanced Raman scattering on optimally electrochemically roughened silver substrates

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Publication details

The article was received on 05 Jul 2006, accepted on 27 Jul 2006 and first published on 14 Aug 2006


Article type: Paper
DOI: 10.1039/B609417A
Citation: J. Mater. Chem., 2006,16, 3546-3551
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    Low concentration rhodamine 6G observed by surface-enhanced Raman scattering on optimally electrochemically roughened silver substrates

    Y. Liu, C. Yu and S. Sheu, J. Mater. Chem., 2006, 16, 3546
    DOI: 10.1039/B609417A

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