Adenosine-stabilized Copper Nanocluster as Fluorescent Probe for Detection of Au(Ⅲ) Ion and CysteineChinese Full TextEnglish Full Text (MT)
XIE Chen-Xia;ZENG Chao;ZHUANG Qian-Fen;WANG Yong;College of Chemistry,Nanchang University;Jiangxi Province Key Laboratory of Modern Analytical Science,Nanchang University;
Abstract: A fluorescent “turn-off-on” sensor was constructed for detection of Au(Ⅲ) ions and cysteine on the basis of fluorescence quenching of adenosine-stabilized copper nanocluster by Au(Ⅲ) ions and cysteine-induced fluorescence enhancement of the adenosine-stabilized copper nanocluster/Au(Ⅲ) system. The adenosine-stabilized copper nanocluster-based sensor gave a linear range of 0.05-10 μmol/L with detection limit of 0.02 μmol/L, and the adenosine-stabilized copper nanocluster/Au(Ⅲ)-based sensor provided a linear range of 5-60 μmol/L with detection limit of 1.6 μmol/L. In addition, the results showed that the fluorescence quenching of adenosine-stabilized copper nanocluster by Au(Ⅲ) ion was mainly originated from the super amplification static quenching effect, and the fluorescence enhancement of the adenosine-stabilized copper nanocluster/Au(Ⅲ) by cysteine mainly arose from the complex reaction between cysteine and Au(Ⅲ) and the removal of Au(Ⅲ) on the adenosine-stabilized copper nanocluster/Au(Ⅲ) system. Additionally, the fluorescence sensor for Au(Ⅲ) ions and cysteine possessed high selectivity, and could be successfully used for detection of Au(Ⅲ) ions in water samples and cysteine in pharmaceutical preparations.
- DOI:
10.19756/j.issn.0253-3820.210619
- Series:
(B) Chemistry/ Metallurgy/ Environment/ Mine Industry
- Subject:
Environment Science and Resources Utilization; Chemistry; Organic Chemical Industry
- Classification Code:
O657.3;TQ460.72;X832
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