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

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• 作者：Bing-Yan HAN ; Xu-Fen HOU ; Rong-Chao XIANG ; Ming-Bo YU ; Ying LI ; Ting-Ting PENG ; Gao-Hong HE ; ^{hgaohong@dlut.edu.cn}
• 关键词：Aggregation-induced emission ; Copper nanoclusters ; Lead ion (II)
• 刊名：Chinese Journal of Analytical Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：45
• 期：1
• 页码：23-27
• 全文大小：650 K
• 卷排序：45

文摘

A turn-on fluorescence analysis method was established for detection of Pb2+ based on aggregation-induced emission. Glutathione-protected non-noble metal copper nanoclusters (Cu NCs@GSH) showed nearly no fluorescence. However, the fluorescence intensity of Cu NCs@GSH was remarkably improved in the presence of Pb2+ and showed bright orange fluorescence. A fluorescence method for detection of Pb2+ was established based on this principle. The fluorescence change of the Cu NCs@GSH solution showed a linear relationship with Pb2+ concentration within the range of 200–700 μM. The limit of detection was 106 μM (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.