Journal
TALANTA
Volume 106, Issue -, Pages 381-387Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2013.01.013
Keywords
Rhodamine-derivative; Ring-close structure; Nanoparticle; Mercury; Surface enhanced Raman spectroscopy
Categories
Funding
- National Basic Research Program of China [2011CB933700]
- National Instrumentation program of China [2011YQ0301241001, 2011YQ0301241101]
- Important Projects of Anhui Provincial Education Department [KJ2010ZD09]
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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. (C) 2013 Elsevier B.V. All rights reserved.
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