Green emission and Ag sensing of hydroxy double salt supported gold nanoclusters

In this paper, a complex of Zn-containing hydroxy double salt (Zn-HDS) supported gold nanoclusters (AuNCs) has been synthesized. The formation of the complex (denoted as the AuNCs/Zn-HDS complex) has been analyzed by Transmission Electron Microscopy (TEM), IR spectroscopy and X-ray Photoelectron Spe...

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Bibliographic Details
Published in:Nanoscale 2016-03, Vol.8 (9), p.512-5125
Main Authors: Lu, Jinyang, Xu, Chunxiang, Tian, Zhengshan, Lu, Junfeng, Lin, Yi, Shi, Zengliang
Format: Article
Language:English
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Summary:In this paper, a complex of Zn-containing hydroxy double salt (Zn-HDS) supported gold nanoclusters (AuNCs) has been synthesized. The formation of the complex (denoted as the AuNCs/Zn-HDS complex) has been analyzed by Transmission Electron Microscopy (TEM), IR spectroscopy and X-ray Photoelectron Spectroscopy (XPS). It is noteworthy that the AuNCs/Zn-HDS complex emits green fluorescence and the quantum yield is 7.6%. Based on the fluorescence quenching effect, the AuNCs/Zn-HDS complex has been employed for the sensitive detection of Ag + and the limit of detection is 2.32 nM. The mechanisms of fluorescence generation and quenching are discussed in detail. This work demonstrates a green-emitting complex of Zn-containing hydroxy double salt supported gold nanoclusters and its application for sensing Ag + .
ISSN:2040-3364
2040-3372
DOI:10.1039/c5nr07029e