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Citation: TAO Wen-Bo, HU Nai-Liang, WANG Hui. Synthesis and Application of Selective Fluorescent Chemosensor for Hg(Ⅱ) Based on Quinoline Derivatives[J]. Chinese Journal of Applied Chemistry, ;2010, 27(6): 732-736. doi: 10.3724/SP.J.1095.2010.90588 shu

Synthesis and Application of Selective Fluorescent Chemosensor for Hg(Ⅱ) Based on Quinoline Derivatives

College of Chemistry and Chemical Engineering, Anhui University, Hefei 230039

Received Date: 12 September 2009
Revised Date: 25 December 2009

A new ON-OFF fluorescent chemosensor(triquinolin-8-yl benzene-1,3,5-tricarboxylate,TQBTC) has been synthesized and characterized by FT-IR,elemental analysis and ¹H NMR.Fluorescence studies indicate that the acetonitrile-H₂O solution of TQBTC shows an emission band centered at 616.0 nm when excited at 253.0 nm.TQBTC could selectively complex with mercury at a coordination ratio of 1:3 result in a linear quenching of the emission.Consequently,TQBTC can be used as a fluorescent chemosensor for selective sensing of Hg(Ⅱ) and a sensitive method of detection of Hg(Ⅱ) has thus been established.The emission of TQBTC is quenched linearly when Hg(Ⅱ) is added quantitatively in the range of 0~30 μmol/L.The detection limit is 0.838 μmol/L.Application of this method to the detection of Hg(Ⅱ) in water samples shows satisfactory results.
- quinoline,
- mercury ion,
- fluorescence quenching,
- fluorescent chemosensor
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