Selective and Sensitive Detection of Silver(I) Ion Based on Tetracationic Complex and TGA/GSH Co-capped Quantum Dots as an Effective Fluorescent Sensing Platform

被引：0
作者：
Xue-Wen Liu
Jun-Shi Shu
Yang Xiao
Yang Yang
Song-Bai Zhang
机构：
[1] Hunan University of Arts and Science,College of Chemistry and Chemical Engineering
来源：
Analytical Sciences | 2017年 / 33卷
关键词：
Silver(I); CdTe quantum dots; TGA-GSH; tetracationic complex; DNA;
D O I：
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学科分类号：
摘要：
CdTe quantum dots capped with glutathione (GSH) and thioglycolic acid (TGA) were synthesized and the interaction between QDs and tetracationic Fe complex was investigated. Based on the specific interaction between Ag+ and cytosine bases (C), we designed a label-free DNA sensor for the detection of Ag+ in aqueous solution. Furthermore, tetracationic Fe complex with a higher positive charge is demonstrated to improve the sensitivity of the sensor. A detection limit of 3.3 nmol dm−3 was obtained, which was lower than in previous reports. This sensor also exhibits promising potential for real sample analysis.
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页码：381 / 385
页数：4
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