A novel colorimetric and fluorescent anion chemosensor based on the flavone quasi-crown ether-metal complex.
The metal-ligand complex 1 ([Mg (L)] (2+)) (or 2 ([Ca (L)]( 2+))) was demonstrated to selectively bind HSO(4)(-) (or H(2)PO(4)(-)) over other anions by using UV-vis absorption and fluorescence spectroscopy. The studied complex exhibits the remarkable color change and fluorescence quenching upon introducing HSO(4)(-) (or H(2)PO(4)(-)) anion in acetonitrile. Both the mechanism and structure of the secondary complex of complex 1 with anion were proposed on the basis of theoretical computation.
Zhou
Li-Li
LL
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China.
Sun
Hao
H
Li
Hua-Ping
HP
Wang
Hui
H
Zhang
Xiao-Hong
XH
Wu
Shi-Kang
SK
Lee
Shuit-Tong
ST