Highly selective fluorescence detection for mercury (II) ions in aqueous solution using water soluble conjugated polyelectrolytes
Highly selective fluorescence detection for mercury (II) ions in aqueous solution using water soluble conjugated polyelectrolytes
复制标题
使用水溶性共轭聚电解质高选择性荧光检测水溶液中的汞 (II) 离子
DOI：
10.1002/marc.200800276
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发表时间：
2008-09-01
影响因子：
4.6
通讯作者：
Zhu, Daoben
中科院分区：
文献类型：
--
作者：
Lu, Haiyan;Tang, Yanli;Zhu, Daoben
建立了用阳离子共轭聚合物(CCP)测定汞(II)(Hg2+)的高选择性分析方法。其转导机理是基于Hg2+促进的反应。在没有Hg2+离子的情况下，CCP可以通过静电作用与阴离子1，3-二硫醇-2-硫酮衍生物形成络合物。1，3-二硫醇-2-硫酮衍生物通过电子转移过程有效地猝灭了CCP的荧光。加入Hg2+离子后，1，3-二硫杂环-2-硫酮向1，3-二硫杂环-2-酮的转变抑制了猝灭，使CCP的荧光恢复。这种检测的不同之处包括CCP的信号放大和特定的Hg2+促进的反应。通过触发CCP发射强度的变化，可以检测到水溶液中的Hg2+离子。
A highly selective assay method has been developed to detect mercury (II) (Hg2+) ions using cationic conjugated polymer (CCP). The transduction mechanism is based on a Hg2+ promoted reaction. In the absence of Hg2+ ions, the CCP can form the complex with an anionic 1,3-dithiole-2-thione derivative through electrostatic interactions. The fluorescence of CCP is efficiently quenched by 1,3-dithiole-2-thione derivative via an electron transfer process. Upon adding Hg2+ ions, the transformation of 1,3-dithiole-2-thione into 1,3-dithiole-2-one inhibits the quenching, and the fluorescence of CCP is recovered. Distinguishing aspects of this assay include the signal amplification of CCPs and a specific Hg2+ promoted reaction. By triggering the change in the emission intensity of CCP, it is possible to detect Hg2+ ions in aqueous solution.