A selective, sensitive probe for mercury(II) ions based on oxazine-thione |
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| Authors: | Qian-Qian ZhangJian-Feng Ge Qing-Feng XuXue-Bo Yang Xue-Qin CaoNa-Jun Li Jian-Mei Lu |
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| Institution: | Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China |
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| Abstract: | A selective, sensitive probe for Hg(II) ions, 7-(diethylamino)-3-methyl-2H-benzob]1,4] oxazine-2-thione (1), is developed. Compound 1 behaves as a ratiometric probe, exhibiting a large blue shift of 100 nm in its absorption spectra upon exposure to Hg(II) ions. The dramatic color change of the solution made ‘naked-eye’ detection of Hg(II) ions possible. Emission spectra of 1 displayed a selective enhancement in intensity in the presence of Hg(II) ions. ESI+-MS analysis indicated that Hg2+-induced desulfurization caused the large absorption response. |
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| Keywords: | Mercury(II) ion probe Oxazine thione Naked-eye detection Chemosensor |
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