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基于四甲氧基硫杂杯[4]芳烃荧光熄灭的钴离子光化学传感器

尹志芳*,钟桐生,刘蓉   

  1. (湖南城市学院化学与环境工程学院 益阳 413000)
  • 收稿日期:2012-05-28 修回日期:2012-07-11 出版日期:2013-04-10 发布日期:2013-04-10
  • 通讯作者: 尹志芳,讲师; Tel:0737-6353033; Fax:0737-6353049; E-mail:yinzf2002@yahoo.com.cn; 研究方向：光化学传感器及新型分离技术
  • 基金资助:
    湖南省科技计划项目(2012FJ3023)

An Optical Chemical Sensor for Cobalt Ion Based on Fluorescence Quenching of 5-Tret-Butyl-2-Methoxy Thiacalix[4] Arene

YIN Zhifang*, ZHONG Tongsheng, LIU Rong    

  1. (Department of Chemistry & Environmental Engineering,Hunan City University,Yiyang  413000，China)
  • Received:2012-05-28 Revised:2012-07-11 Published:2013-04-10 Online:2013-04-10

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被引次数

8 | 1

摘要： 基于Co2+对固定于聚氯乙烯（PVC）膜中的四甲氧基硫杂杯[4]芳烃具有可逆的荧光猝灭效应，研制了测定Co2+浓度的光化学敏感膜。 该敏感膜的最佳化学组成为：50 mg PVC粉、100 mg 癸二酸二辛酯和2.5 mg四甲氧基硫杂杯[4]芳烃。 在pH=5.6的硝酸溶液中测定Co2+，其线性响应范围为6.31×10-6~1.26×10-2 mol/L，检出限为3.11×10-7 mol/L。 该敏感膜具有较好的重现性、可逆性及选择性，其它常见阴离子和阳离子对其不产生干扰。

关键词: 四甲氧基硫杂杯[4]芳烃, 荧光猝灭, 光化学传感器, 钴离子

Abstract: An optical chemical sensor was developed for the determination of Co2+ based on the reversible fluorescence quenching of 5-tert-butyl-2-methoxy thiacalix[4] arene(Tc4A-OCH3) immobilized on a plasticized polyvinyl chloride(PVC) membrane. The optimum membrane of the sensor is composed of 50 mg of PVC, 100 mg of dioctyl sebacate(DOS) and 2.5 mg of 5-tert-butyl-2-methoxy thiacalix[4] arene. The maximum response of the membrane for Co2+ was obtained in nitric acid solution with pH of 5.6, and the proposed sensor responds linearly in a concentration range of 6.31×10-6～1.26×10-2 mol/L, with a detection limit of 3.11×10-7 mol/L. The sensing membrane has the advantages of high reproducibility, reversibility of the fluorescence signal and good selectivity. Common inorganic ions have no interferences.

Key words: tret-butyl-methoxy thiacalix[4] arene, fluorescence quenching, Optical chemical sensor,, cobalt ion(Ⅱ)

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