PMID- 27154693
OWN - NLM
STAT- MEDLINE
DCOM- 20180126
LR  - 20181202
IS  - 1873-3573 (Electronic)
IS  - 0039-9140 (Linking)
VI  - 154
DP  - 2016 Jul 1
TI  - Copper nanocluster-based fluorescent probe for sensitive and selective detection 
      of Hg(2+) in water and food stuff.
PG  - 409-15
LID - S0039-9140(16)30221-1 [pii]
LID - 10.1016/j.talanta.2016.03.095 [doi]
AB  - In this study, Hg(2+) ions were found to quench the fluorescence of glutathione 
      (GSH)-capped copper clusters (Cu NCs). The Cu NCs were prepared by a simple 
      reduction of CuSO4 in the presence of GSH serving both as a reducing and 
      protecting agents, and characterized by ultraviolet-visible absorption 
      spectroscopy (UV-vis), high resolution scanning electron microscopy (HRTEM), 
      Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron 
      spectrometer (XPS). The GSH-Cu NCs displayed a small size, excellent 
      water-dispersibility, good storage stability, good photostability and were stable 
      in the presence of high concentrations of salt. The GSH-Cu NCs possessed strong 
      blue fluorescence with a quantum yield of 10.6% and exhibited an 
      excitation-independent fluorescence behavior. The zeta potential, TEM, resonance 
      light scattering and dynamic light scattering measurements demonstrated that the 
      Hg(2+) ion-induced aggregation of the Cu NCs contributed to the fluorescence 
      quenching of the dispersed Cu NCs. On these findings, a sensitive and selective 
      fluorescent probe was developed for detecting Hg(2+) in the linear range from 
      10nM to 10muM with a detection limit of 3.3nM (S/N=3). The proposed method has 
      been successfully applied to determine Hg(2+) content in water sample and food 
      stuff. The results of the proposed method were in good agreement with those 
      obtained by a hydride generation atomic fluorescence spectrometry (HG-AFS).
CI  - Copyright (c) 2016 Elsevier B.V. All rights reserved.
FAU - Hu, Xue
AU  - Hu X
AD  - Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of 
      Education, College of Chemistry and Chemical Engineering, Southwest University, 
      Chongqing 400715, PR China.
FAU - Wang, Wei
AU  - Wang W
AD  - Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of 
      Education, College of Chemistry and Chemical Engineering, Southwest University, 
      Chongqing 400715, PR China.
FAU - Huang, Yuming
AU  - Huang Y
AD  - Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of 
      Education, College of Chemistry and Chemical Engineering, Southwest University, 
      Chongqing 400715, PR China. Electronic address: yuminghuang2000@yahoo.com.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20160329
PL  - Netherlands
TA  - Talanta
JT  - Talanta
JID - 2984816R
RN  - 0 (Fluorescent Dyes)
RN  - 059QF0KO0R (Water)
RN  - 789U1901C5 (Copper)
RN  - FXS1BY2PGL (Mercury)
SB  - IM
MH  - Copper
MH  - Fluorescent Dyes
MH  - Mercury
MH  - *Nanostructures
MH  - Spectroscopy, Fourier Transform Infrared
MH  - Water
OTO - NOTNLM
OT  - Copper nanoclusters
OT  - Fluorescence probe
OT  - Food stuff
OT  - Mercury ions
EDAT- 2016/05/08 06:00
MHDA- 2018/01/27 06:00
CRDT- 2016/05/08 06:00
PHST- 2016/02/09 00:00 [received]
PHST- 2016/03/21 00:00 [revised]
PHST- 2016/03/28 00:00 [accepted]
PHST- 2016/05/08 06:00 [entrez]
PHST- 2016/05/08 06:00 [pubmed]
PHST- 2018/01/27 06:00 [medline]
AID - S0039-9140(16)30221-1 [pii]
AID - 10.1016/j.talanta.2016.03.095 [doi]
PST - ppublish
SO  - Talanta. 2016 Jul 1;154:409-15. doi: 10.1016/j.talanta.2016.03.095. Epub 2016 Mar 
      29.