基于 Hg(2+)-Au(+) 相互作用对金纳米簇荧光猝灭的高选择性和超灵敏 Hg(2+)检测。

Highly selective and ultrasensitive detection of Hg(2+) based on fluorescence quenching of Au nanoclusters by Hg(2+)-Au(+) interactions.

机构信息

Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore.

出版信息

Chem Commun (Camb). 2010 Feb 14;46(6):961-3. doi: 10.1039/b920748a. Epub 2009 Dec 24.

DOI:10.1039/b920748a

PMID:20107664

Abstract

A simple label-free method for the detection of Hg(2+) ions with high selectivity and sensitivity has been developed by using fluorescent Au NCs in aqueous media. The sensing mechanism was based on the high-affinity metallophilic Hg(2+)-Au(+) interactions, which effectively quenched the fluorescence of Au NCs.

摘要

一种简单的、无需标记的方法，用于在水相介质中使用荧光金纳米簇（Au NCs）检测 Hg(2+)离子，具有高选择性和灵敏度。该传感机制基于高亲和力的金属键合 Hg(2+)-Au(+)相互作用，有效地猝灭了 Au NCs 的荧光。