Fluorescent Silver Nanoclusters as Effective Probes for Highly Selective Detection of Mercury(II) at Parts‐per‐Billion Levels |
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| Authors: | Dr Chuanxi Wang Lin Xu Yu Wang Dan Zhang Prof Xiaodong Shi Fengxia Dong Prof Kui Yu Prof Quan Lin Prof Bai Yang |
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| Institution: | 1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China);2. C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA);3. Steacie Institute for Molecular Sciences, NRC Canada, Ottawa, Ontario, K1?A0R6 (Canada) |
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| Abstract: | Facile preparation of water‐soluble and fluorescent Ag nanoclusters (NCs) stabilized by glutathione at room temperature is described. Although the glutathione layer was introduced to prevent the silver nanoparticles from decomposition and increase their water solubility, this simple surface optimization resulted in surprisingly high efficiency of selective Hg2+ sensing, where the limit of detection (LOD) was as low as 10?10 M (0.02 ppb, 0.1 nM ). This result revealed a simple and practical strategy for Hg2+ detection using fluorescent Ag NCs as sensor probe, with the lowest detecting limits reported to date. |
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| Keywords: | nanoclusters fluorescent probes mercury selective detection silver |
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