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

被引：12
|
作者：
Dong, Kailong [1 ]
Zhou, Jiasheng [1 ]
Yang, Taiqun [1 ]
Dai, Shan [1 ]
Tan, Hao [1 ]
Chen, Yuting [1 ]
Pan, Haifeng [1 ]
Chen, Jinquan [2 ]
Audit, Benjamin [2 ]
Zhang, Sanjun [1 ,3 ,4 ]
Xu, Jianhua [1 ,3 ]
机构：
[1] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
[2] Univ Lyon, Lab Phys, Lyon, France
[3] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan, Shanxi, Peoples R China
[4] NYU Shanghai, NYU ECNU Inst Phys, Shanghai, Peoples R China
来源：
APPLIED SPECTROSCOPY | 2018年 / 72卷 / 11期
基金：
美国国家科学基金会;
关键词：
Gold nanoparticles; polyvinyl pyrrolidone; PVP; fluorescent sensor; metal enhanced fluorescence; Hg2+ sensor; COLORIMETRIC DETECTION; MERCURY DETERMINATION; SENSOR; PROBE; WATER; ASSAY; ACID;
D O I：
10.1177/0003702818775704
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
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.
引用
收藏
页码：1645 / 1652
页数：8
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