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Talanta. 2013 Mar 15;106:381-7. doi: 10.1016/j.talanta.2013.01.013. Epub 2013 Jan 17.

Sensitive and selective SERS probe for Hg(II) detection using aminated ring-close structure of Rhodamine6G.

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  • 1Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China.


A sensitive surface-enhanced Raman scattering (SERS) probe for selective detection of Hg(II) was designed and prepared by incorporating the well-known Rhodamine 6G and ethylenediamine into one molecule which is a aminated ring-close structure of Rhodamine 6G (R-NH2). Due to the presence of oxygen and nitrogen functional groups of R-NH2, Hg(II) would combined with two R-NH2 molecules. The probe molecule R-NH2 displays a highly selectively response of SERS enhancement towards 1 nM Hg(II) and featured SERS response with a broad pH span. The results establish the well-fitted linearity function of the SERS intensity with the concentration of Hg(II) in aqueous solution, suggesting the possibility for real-time detection of Hg(II) and the convenience for potential application.

Copyright © 2013 Elsevier B.V. All rights reserved.

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