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Synthesis of highly luminescent Cu/Ag bimetal nanoclusters and their application in a temperature sensor

Abstract

Bimetal nanoclusters (BNCs) have attracted plenty of attention due to their cooperative properties in electronic, optical, and catalytic. In this paper, the highly luminescent Cu/Ag BNCs were prepared based on the weakly luminescent glutathione (GSH)-capped Cu NCs for the first time. After the introduction of a certain amount of Ag+, a 9-fold enhancement of the luminescence intensity was obtained from GSH-protected Cu/Ag BNCs. The luminescence emission peak was blue shifted from 620 nm (red emission) to 604 nm (orange-yellow emission). The Cu/Ag BNCs exhibited an average size of around 1.4 ± 0.2 nm by a thorough analysis of transmission electron microscopy date. As-prepared Cu/Ag BNCs boasted excellent anti-interference performance against various metal ions. Besides the intrinsic optical properties, the Cu/Ag BNCs were employed as temperature sensor by virtue of the luminescence intensity of Cu/Ag BNCs responding sensitively to temperature fluctuating in the range of 4-55 °C.

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Publication details

The article was accepted on 28 May 2017 and first published on 29 May 2017


Article type: Paper
DOI: 10.1039/C7AY01164D
Citation: Anal. Methods, 2017, Accepted Manuscript
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    Synthesis of highly luminescent Cu/Ag bimetal nanoclusters and their application in a temperature sensor

    B. Han, X. Hou, R. Xiang and G. He, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY01164D

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