半胱胺保护的铜纳米团簇作为一种高选择性的荧光分析方法，用于检测铝离子。
Cysteamine-capped copper nanoclusters as a highly selective turn-on fluorescent assay for the detection of aluminum ions.
机构信息
Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.
School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wang Chan, Rayong 21210, Thailand.
出版信息
Talanta. 2018 Feb 1;178:796-804. doi: 10.1016/j.talanta.2017.10.006. Epub 2017 Oct 5.
A new type of copper nanoclusters was synthesized by a one-pot reaction using cysteamine as a capping agent and reducing agent (Cys-CuNCs). The synthesized CuNCs exhibited a spherical shape and a monodisperse and strong fluorescent emission characteristic peak at 430nm when exciting at 330nm. The Cys-CuNCs were demonstrated as a fluorescent chemodosimeter for the selective detection of Al. In the presence of Al, the fluorescent emission of the Cys-CuNCs was considerably enhanced, while other studied metal ions did not show this phenomenon. The fluorescent intensity near 380nm linearly increased with an increasing Al concentration. The proposed method provided a working range of 1-7µM with a low detection limit of 26.7nM and was applied to determine Al in drinking water samples with satisfactory results.
一种新型的铜纳米簇是通过一锅反应合成的，使用半胱氨酸作为封端剂和还原剂（Cys-CuNCs）。合成的 CuNCs 呈现出球形，在 330nm 激发时具有单分散性和强荧光发射特征峰，在 430nm 处。Cys-CuNCs 被证明是一种荧光化学计量法，用于选择性检测 Al。在 Al 的存在下，Cys-CuNCs 的荧光发射得到了显著增强，而其他研究的金属离子则没有表现出这种现象。近 380nm 的荧光强度随 Al 浓度的增加呈线性增加。该方法提供了 1-7µM 的工作范围，检测限低至 26.7nM，并应用于饮用水样品中 Al 的测定，结果令人满意。
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