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Colorimetric and fluorescent sensor for selective sensing of Hg2+ ions in semi aqueous medium
被引:26
|作者:
Udhayakumari, Duraisamy
[1
]
Velmathi, Sivan
[1
]
机构:
[1] Natl Inst Technol, Organ & Polymer Synth Lab, Dept Chem, Tiruchirappalli 620015, Tamil Nadu, India
关键词:
Colorimetric titration;
Hg2+ ion sensor;
DMSO: water mixture;
UV-vis spectroscopy;
Fluorescence spectroscopy;
HG2+-SELECTIVE CHEMODOSIMETER;
MERCURY LEVELS;
METAL-IONS;
WATER;
CHEMOSENSORS;
SPIROLACTAM;
MOLECULES;
RECEPTOR;
BINDING;
HG(II);
D O I:
10.1016/j.jlumin.2012.11.011
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
A highly sensitive and selective detection of Hg2+ ion with simple salophen probe was developed. In DMSO: water (40:60, v/v) solution, Hg2+ ions coordinate with imine and shows color turn-off from yellow to colorless. Receptor 1 showed its ability for sensing Hg2+ cations sensitively through three channels: colorimetric, UV-vis and fluorescence spectroscopy. Hg2+ ions coordinate to the imine (Receptor 1) through NONO binding site forming 1:1 complex. It exhibits fluorescent 'Turn-on' behavior based on solvent polarity. The detection limit of our receptor with mercury is 1 mu g L-1. (c) 2012 Elsevier B.V. All rights reserved.
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页码:117 / 121
页数:5
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