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Citation: HAN Bing-Yan, HOU Xu-Fen, XIANG Rong-Chao, YU Ming-Bo, LI Ying, PENG Ting-Ting, HE Gao-Hong. Detection of Lead Ion Based on Aggregation-induced Emission of Copper Nanoclusters[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(1): 23-27. doi: 10.11895/j.issn.0253-3820.160596 shu

Detection of Lead Ion Based on Aggregation-induced Emission of Copper Nanoclusters

School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, China

Received Date: 10 August 2016
Revised Date: 22 November 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21405009)

A turn-on fluorescence analysis method was established for detection of Pb²⁺ based on aggregation-induced emission. Glutathione-protected non-noble metal copper nanoclusters (CuNCs@GSH) exhibited nearly no fluorescence. However, the fluorescence intensity of CuNCs@GSH was remarkably improved in the presence of Pb²⁺and showed bright orange fluorescence. A fluorescencent method for detection of Pb²⁺ was established based on this principle. The fluorescence change of the CuNCs@GSH solution showed a linear relationship with Pb²⁺ concentration within the range of 200-700 μmol/L. The limit of detection was 106 μmol/L (S/N=3). This method is simple, rapid and highly selective, and can be used for the visual qualitative detection of Pb²⁺ under ultraviolet (UV) lamp.
- Aggregation-induced emission,
- Copper nanoclusters,
- Lead ion
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