Spectroscopic study of the recognition of 2-quinolinone derivative on mercury ion.
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.
Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China.
Yongbin
Y
Zhang
Institute 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.
Yutao
Y
Yang
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
Junsheng
J
Hao
Key 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.
Caixia
C
Yin
Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China.
Fangjun
F
Huo
Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China.
Jianbin
J
Chao
Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China. Electronic address: dsliu@sxu.edu.cn.
Diansheng
D
Liu
D002138:Calibration; D006863:Hydrogen-Ion Concentration; D007477:Ions; D057230:Limit of Detection; D008628:Mercury / Q000737:chemistry*; D066244:Proton Magnetic Resonance Spectroscopy; D015363:Quinolones / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
D007477:Ions; D015363:Quinolones; D008628:Mercury
2-Quinolinone derivative; Fluorescent probe; Mercury ion; Recognition