| 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 |
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| 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. |
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| 作者姓名： | 陶文波 胡乃梁 王辉 |
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| 作者单位： | (安徽大学化学化工学院 合肥 230039) |
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| 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253.0 nm波长辐射激发下于616.0 nm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0~30 μmol/L的范围内与TQBTC的荧光猝灭呈线性关系，方法检出限为0.838 μmol/L。 方法应用于实际样品中Hg(Ⅱ)的检测，获得满意结果。
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| 关 键 词： | 喹啉 汞离子 荧光猝灭 荧光传感分子 |
| 收稿时间： | 2009-09-02 |
| 修稿时间： | 2009-11-29 |
Synthesis and Application of a Selective Fluorescent Chemosensor for Hg(II) Based on Quinoline Derivatives |
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| TAO Wen-Bo,HU Nai-Liang,WANG Hui.Synthesis and Application of a Selective Fluorescent Chemosensor for Hg(II) Based on Quinoline Derivatives[J].Chinese Journal of Applied Chemistry,2010,27(6):732-736. |
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| Authors: | TAO Wen-Bo HU Nai-Liang WANG Hui |
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| Affiliation: | (College of Chemistry and Chemical Engineering,Anhui University,Hefei 230039) |
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| Abstract: | AA 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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| Keywords: | quinoline mercury ion fluorescence quenching fluorescent chemosensor |
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