A novel colorimetric and fluorescent anion chemosensor based on the flavone quasi-crown ether-metal complex |
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| Authors: | Zhou Li-Li Sun Hao Li Hua-Ping Wang Hui Zhang Xiao-Hong Wu Shi-Kang Lee Shuit-Tong |
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| Institution: | Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China. |
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| Abstract: | 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. |
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