GSH诱导的金纳米棒自组装及汞离子检测

发布时间：2018-04-20 18:51

本文选题：金纳米棒 + 自组装　；参考：《光子学报》2017年09期

【摘要】：提出了一种基于金纳米棒自组装的促进和抑制检测汞离子的方法.在合适的实验条件下,当金纳米棒胶体溶液中加入还原性谷胱甘肽(GSH)时,金纳米棒因Au-S键的形成,通过氢键和静电相互作用发生头对头(End to End)的自组装.当以上体系中加入汞离子时,这种头对头的自组装会被打破,金纳米棒重新呈分散状态.这种方法的最低检测限为1nmol/L,检测范围为1nmol/L-100μmol/L.该汞离子检测方法特异性强、灵敏度高且检测的浓度范围比较大,有望广泛用于水环境中汞离子的检测.
[Abstract]:A method to promote and suppress the detection of mercury ions based on self-assembly of gold nanorods was proposed. Under suitable experimental conditions, when the reduced glutathione glutathione (GSH) is added to the colloidal solution of gold nanorods, the gold nanorods are self-assembled by the formation of Au-S bonds and the end to end through hydrogen bonding and electrostatic interaction. When mercury ions are added to the system, the self-assembly of the head-to-head will be broken, and the gold nanorods will be dispersed again. The detection limit of this method is 1 nmol / L and the detection range is 1nmol/L-100 渭 mol / L. The method has the advantages of high specificity, high sensitivity and wide range of concentration, so it is expected to be widely used in the detection of mercury ions in water environment.
【作者单位】：西安交通大学生命科学与技术学院生物医学信息工程教育部重点实验室;
【基金】：国家自然科学基金(No.61675162) 中央高校基本科研业务费(No.xjj2015082)资助~~
【分类号】：O657.3;TB383.1

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