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

  • Kailong Dong
  • , Jiasheng Zhou
  • , Taiqun Yang
  • , Shan Dai
  • , Hao Tan
  • , Yuting Chen
  • , Haifeng Pan
  • , Jinquan Chen
  • , Benjamin Audit
  • , Sanjun Zhang*
  • , Jianhua Xu
  • *此作品的通讯作者
  • East China Normal University
  • Université de Lyon
  • Shanxi University
  • NYU-ECNU Center for Computational Chemistry at NYU Shanghai

科研成果: 期刊稿件文章同行评审

摘要

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.

源语言英语
页(从-至)1645-1652
页数8
期刊Applied Spectroscopy
72
11
DOI
出版状态已出版 - 1 11月 2018
已对外发布

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