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

Jinyang Lu; Chunxiang Xu; Zhengshan Tian; Junfeng Lu; Yi Lin; Zengliang Shi

doi:10.1039/C5NR07029E

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

Jinyang Lu,^ab Chunxiang Xu,*^a Zhengshan Tian,^a Junfeng Lu,^a Yi Lin^a and Zengliang Shi^a

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* Corresponding authors

^a State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
E-mail: xcxseu@seu.edu.cn
Tel: +86-25-83790755

^b Department of Electronic Engineering, Suzhou Higher Vocational School of Technology, Suzhou 215009, China

Abstract

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.

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Article information

DOI: https://doi.org/10.1039/C5NR07029E
Article type: Paper
Submitted: 11 Oct 2015
Accepted: 02 Feb 2016
First published: 02 Feb 2016

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Nanoscale, 2016,8, 5120-5125

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

J. Lu, C. Xu, Z. Tian, J. Lu, Y. Lin and Z. Shi, Nanoscale, 2016, 8, 5120 DOI: 10.1039/C5NR07029E

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