Issue 43, 2018
From the journal:

Analytical Methods

Fluorescence signal amplification of gold nanoclusters with silver ions†

Wan Jiang,a   Bo Rao,a   Qinzhen Li,a   Jinsong Chai,a   Sha Yang,a   Yuanxin Du,a   Haizhu Yu*a  and  Manzhou Zhu ORCID logo *a  

* Corresponding authors

a Department of Chemistry, Center for Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui, China
E-mail: yuhaizhu@ahu.edu.cn, zmz@ahu.edu.cn

Abstract

The introduction of Ag+ results in significant amplification of the fluorescence signal of water-soluble gold nanoclusters (NCs) capped by BSA (short for bull serum albumin) associated with a blueshift of the emission maximum by about 35 nm. In contrast, all other metal ions and anions (Au3+, Ca2+, Mn2+, NO2−, F−, Cl−, etc.) induce comparable emission intensities, and Hg2+ completely quenches the emission of gold NCs. The amplified fluorescence is used to recover the fluorescence in sensing systems of Hg2+ based on gold nanoclusters, amplifying the emission signal and improving the detection limits.

Graphical abstract: Fluorescence signal amplification of gold nanoclusters with silver ions

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C8AY01955J
Article type
Paper
Submitted
05 Sep 2018
Accepted
09 Oct 2018
First published
09 Oct 2018

Anal. Methods, 2018,10, 5181-5187

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Fluorescence signal amplification of gold nanoclusters with silver ions

W. Jiang, B. Rao, Q. Li, J. Chai, S. Yang, Y. Du, H. Yu and M. Zhu, Anal. Methods, 2018, 10, 5181 DOI: 10.1039/C8AY01955J

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