高等学校化学学报

高等学校化学学报

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新型杂环三氮烯荧光试剂1,8-双(2-苯并噻唑重氮氨基)萘的合成及其分析应用

付国良1, 冯锋1,2, 陈泽忠2, 白云峰2, 孟双明2, 林森1, 江润生1   

    1. 南昌大学理学院化学系, 南昌 330047;
    2. 山西大同大学化学系, 大同 037009
  • 收稿日期:2008-01-29 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10
  • 通讯作者: 冯锋

Synthesis and Analytical Application of a New Heterocyclic Triazene Fluorescent Reagent 1,8-Bis(2-benthiazolydiazoamino)naphthalene

FU Guo-Liang1, FENG Feng1,2*, CHEN Ze-Zhong2, BAI Yun-Feng2, MENG Shuang-Ming2, LIN Sen1, JIANG Run-Sheng1   

    1. Department of Chemistry, College of Sciences, Nanchang University, Nanchang 330047, China;
    2. Department of Chemistry, Shanxi Datong University, Datong 037009, China
  • Received:2008-01-29 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
  • Contact: FENG Feng

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被引次数

12

摘要： 将1,8-萘二胺和苯并噻唑类试剂结合, 并引入杂环三氮烯结构, 合成了新荧光试剂1,8-双(2-苯并噻唑重氮氨基)萘(BBTANP), 其结构经红外光谱、核磁共振谱和元素分析证实. 研究结果表明, 在碱性介质中, 该试剂与Cu(Ⅱ)形成1∶1的络合物, 并在λex/λem=362 nm/459 nm处产生荧光增强作用. 据此建立了BBTANP测定Cu(Ⅱ)的新型荧光分析法, 该方法的线性范围为8.0×10-7—1.0×10-5 mol /L, 检测限为1.3×10-7 mol/L. 将其应用于水样中Cu(Ⅱ)的测定, 结果令人满意.

关键词: 1,8-双(2-苯并噻唑重氮氨基)萘, 荧光增强, 铜离子测定

Abstract: With the aid of combining 1,8-naphthalene with benthiazole through bis-triazene group, a new fluorescent reagent 1,8-bis(2-benthiazolydiazoamino)naphthalene(BBTANP) was synthesized and confirmed by means of elemental analysis, 1H NMR and infrared spectra. A chelate complex was formed by the reaction between BBTANP and Cu(Ⅱ) in a weak basic medium, which resulted in fluorescence enhancement. The possible response mechanism of BBTANP to Cu(Ⅱ) was discussed. The reaction showed a high selectivity and a high sensitivity for Cu(Ⅱ). A new spectrofluorimetric method for the determination of trace Cu(Ⅱ) with this reagent was developed. The excitation and emission wavelengths of BBTANP/Cu(Ⅱ) system were 362 and 459 nm in a basic medium, respectively. Under the optimal conditions, a linear response to copper was obtained in the concentration range from 8.0×10-7 to 1.0×10-5 mol/L, and the detection limit was 1.3×10-7 mol/L. The method is selective, sensitive and simple. It has been used to determine trace copper in lake water with satisfactory results.

Key words: 1,8-Bis(2-benthiazolydiazoamino)naphthalene, Fluorescence enhancement, Detemination of copper

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