title: Sensitive and selective SERS probe for Hg(II) detection using aminated ring-close structure of Rhodamine6G.
abstract: 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.
authors.affiliation: Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China.
authors.forename: Pan
authors.initials: P
authors.lastname: Li
authors.forename: Honglin
authors.initials: H
authors.lastname: Liu
authors.forename: Liangbao
authors.initials: L
authors.lastname: Yang
authors.forename: Jinhuai
authors.initials: J
authors.lastname: Liu
mesh_terms: D000586:Amination; D002413:Cations, Divalent; D004785:Environmental Pollutants / Q000032:analysis*; D005029:Ethylenediamines / Q000737:chemistry*; D005456:Fluorescent Dyes; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008628:Mercury / Q000032:analysis*; D012235:Rhodamines / Q000737:chemistry*; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman / Q000379:methods
chemical_list: D002413:Cations, Divalent; D004785:Environmental Pollutants; D005029:Ethylenediamines; D005456:Fluorescent Dyes; D012235:Rhodamines; C026188:rhodamine 6G; C031234:ethylenediamine; D008628:Mercury