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1. Sensitive Hg2+ Ion Detection Using Metal Enhanced Fluorescence of Novel Polyvinyl Pyrrolidone (PVP)-Templated Gold Nanoparticles.

Author

Dong, Kailong, Zhou, Jiasheng, Yang, Taiqun, Dai, Shan, Tan, Hao, Chen, Yuting, Pan, Haifeng, Chen, Jinquan, Audit, Benjamin, Zhang, Sanjun, and Xu, Jianhua

Subjects
*MERCURY, *METAL ions, *FLUORESCENCE, *POVIDONE, *GOLD nanoparticles, *CHEMICAL templates
Abstract

In this study, we report a straightforward strategy for Hg2+ ion detection. Fluorescent Au nanoparticles (NPs) were one-pot synthesized using a polymer (polyvinyl pyrrolidone [PVP]) as both capping and fluorescence agent. The as-synthesized PVP-Au NPs showed a remarkably rapid response selectively for Hg2+ ions compared to 14 other metal ions. The detection limit of Hg2+ was estimated at 100 nM. We discuss the emission and quenching mechanism of the PVP-Au NPs, the former being attributed to metal enhanced fluorescence and the latter being related to static quenching by Hg2+. The fluorescence of PVP-Au NPs offers an efficient and reliable strategy for Hg2+ ions detection. They therefore have a great potential for applications in health and environmental monitoring. [ABSTRACT FROM AUTHOR]

Published
2018
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