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Spectrochim Acta A Mol Biomol Spectrosc. 2014 Nov 11;132:27-31. doi: 10.1016/j.saa.2014.04.044. Epub 2014 Apr 20.

Spectroscopic study of the recognition of 2-quinolinone derivative on mercury ion.

Author information

  • 1Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China.
  • 2Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
  • 3School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
  • 4Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China. Electronic address: yincx@sxu.edu.cn.
  • 5Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China. Electronic address: dsliu@sxu.edu.cn.

Abstract

A new compound based on 2-quinolinone derivative with very little side effects on organisms, 3-(1H-benzo[d]imidazol-2-yl)-6,7-difluoroquinolin-2(1H)-one, has been designed, synthesized and characterized. And its recognition ability was firstly studied by spectroscopy. The result indicated that the compound shows high selectivity for Hg2+ over other metal ions with detectable fluorescent signals in aqueous-methanol media. The proposed mechanism is that the fluorescence of the probe was quenched due to the effect from spin-orbit coupling of Hg2+ after the probe coordinated with Hg2+, and was proved by ESI-MS and 1H NMR analysis.

KEYWORDS:

2-Quinolinone derivative; Fluorescent probe; Mercury ion; Recognition

PMID:
24845874
DOI:
10.1016/j.saa.2014.04.044
[PubMed - indexed for MEDLINE]
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