Label-free tungsten disulfide quantum dots as a fluorescent sensing platform for highly efficient detection of copper(Ⅱ) ions

被引：0
|
作者：
赵宣 [1 ]
何大伟 [1 ]
王永生 [1 ]
胡音 [1 ]
付晨 [1 ]
李雪 [1 ]
机构：
[1] Key Laboratory of Luminescence and Optical Information,Beijing Jiaotong University
来源：
Chinese Physics B | 2017年 / 26卷 / 06期
基金：
中国国家自然科学基金;
关键词：
WS2 quantum dots; photoluminescence; biosensor;
D O I：
暂无
中图分类号：
O471.1 [半导体量子理论];
学科分类号：
摘要：
A fluorescent probe for the sensitive and selective determination of copper ion(Cu;) is presented. It is based on the use of tungsten disulfide quantum dots（WS;QDs） which is independent of the p H of solution and emits strong blue fluorescence. Copper ions could cause aggregation of the WS;QDs and lead to fluorescence quenching of WS;QDs. The change of fluorescence intensity is proportional to the concentration of Cu;, and the limit of detection is 0.4 μM. The fluorescent probe is highly selective for Cu;over some potentially interfering ions. These results indicate that WS;QDs,as a fluorescent sensing platform, can meet the selective requirements for biomedical and environmental application.
引用
收藏
页码：275 / 279
页数：5
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