Carbon dots-based fluorescent probes for sensitive and selective detection of iodide

被引：7
|
作者：
Fangkai Du
Fang Zeng
Yunhao Ming
Shuizhu Wu
机构：
[1] State Key Laboratory of Luminescent Materials and Devices,College of Materials Science & Engineering
[2] South China University of Technology,undefined
来源：
Microchimica Acta | 2013年 / 180卷
关键词：
Carbon dots; Fluorescence probe; Iodide; Mercury ion; Fluorescence enhancement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report on a simple method for the determination of iodide in aqueous solution by exploiting the fluorescence enhancement that is observed if the complex formed between carbon dots and mercury ion is exposed to iodide. Fluorescent carbon dots (C-dots) were treated with Hg(II) ion which causes quenching of the emission of the C-dots. On addition of iodide, the Hg(II) ions are removed from the complex due to the strong interaction between Hg(II) and iodide. This causes the fluorescence to be restored and enables iodide to be determined in the 0.5 to 20 μM concentration range and with a detection limit of ~430 nM. The test is highly selective for iodide (over common other anions) and was used for the determination of iodide in urine.
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页码：453 / 460
页数：7
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