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Issue 43, 2018
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Fluorescence signal amplification of gold nanoclusters with silver ions

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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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Publication details

The article was received on 05 Sep 2018, accepted on 09 Oct 2018 and first published on 09 Oct 2018


Article type: Paper
DOI: 10.1039/C8AY01955J
Citation: 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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