引用本文:
陶文波, 胡乃梁, 王辉. 基于喹啉衍生物的汞离子选择性荧光传感分子的合成与应用[J]. 应用化学,
2010, 27(6): 732-736.
doi:
10.3724/SP.J.1095.2010.90588
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
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
基于喹啉衍生物的汞离子选择性荧光传感分子的合成与应用
摘要:
合成一种新型开-关(ON-OFF)型汞离子荧光传感分子triquinolin-8-yl benzene-1,3,5-tri-carboxylate(TQBTC)。采用FT-IR、元素分析、1H NMR测试技术对其结构进行了表征。在对其荧光性质的研究中发现,TQBTC的乙腈-水溶液在253.0nm波长辐射激发下于616.0nm处发射强荧光,且对汞离子络合有较好的选择性。TQBTC与Hg(Ⅱ)可形成1:3型络合物,同时使荧光线性猝灭,TQBTC可作为Hg(Ⅱ)的荧光传感分子。建立了一种测定Hg(Ⅱ)的灵敏分析方法。Hg(Ⅱ)浓度在0~30μmol/L的范围内与TQBTC的荧光猝灭呈线性关系,方法检出限为0.838μmol/L。方法应用于实际样品中Hg(Ⅱ)的检测,获得满意结果。
English
Synthesis and Application of Selective Fluorescent Chemosensor for Hg(Ⅱ) Based on Quinoline Derivatives
Abstract:
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.
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Key words:
- quinoline
- / mercury ion
- / fluorescence quenching
- / fluorescent chemosensor
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