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

被引：162

作者：

Du, Fangkai ^{[1
]}

Zeng, Fang ^{[1
]}

Ming, Yunhao ^{[1
]}

Wu, Shuizhu ^{[1
]}

机构：

[1] S China Univ Technol, Coll Mat Sci & Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China

来源：

MICROCHIMICA ACTA | 2013年 / 180卷 / 5-6期

关键词：

Carbon dots; Fluorescence probe; Iodide; Mercury ion; Fluorescence enhancement; QUANTUM DOTS; PHOTOLUMINESCENCE; RECEPTOR; SENSOR;

D O I：

10.1007/s00604-013-0954-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

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 mu M concentration range and with a detection limit of similar to 430 nM. The test is highly selective for iodide (over common other anions) and was used for the determination of iodide in urine.

引用

页码：453 / 460

页数：8

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