Funct. Mater. 2020; 27 4: 846-849.
Detection of permanganate based on copper nanoclusters as fluorescent probes
1Department of Chemical and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, 45 Chengde Str., 132022 Jilin, P. R. China
2Yamagata University Graduate School of Organic Materials Science, 4-3-16 Jonan, Yonezawa City, Japan.
Copper nanoclusters (CuNCs@TA) with strong luminescence were synthesized by a one-step method with tannic acid as a ligand. Since MnO4- can quench the fluorescence peak of CuNCs@TA, a method for detecting MnO4- was developed based on copper nanoclusters as a fluorescent probe. The results show that as the concentration of MnO4- increases, the fluorescence emission spectrum intensity of CuNCs@TA is reduced. The linear range is 0.5-35 μM, and the minimum detection limit is 36 nM. The developed method has been used for analysis of actual water samples. This method can be more widely used in the determination of MnO4- in actual samples.
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