A selective, sensitive probe for mercury(II) ions based on oxazine-thione

作者：Zhang, Qian-Qian; Ge, Jian-Feng^*; Xu, Qing-Feng; Yang, Xue-Bo; Cao, Xue-Qin; Li, Na-Jun; Lu, Jian-Mei

来源：Tetrahedron Letters, 2011, 52(5): 595-597.

DOI：10.1016/j.tetlet.2010.11.130

• Mercury(II) ion probe
• Oxazine thione
• Naked-eye detection
• Chemosensor

A selective, sensitive probe for Hg(II) ions, 7-(diethylamino)-3-methyl-2H-benzo[b][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. ES1(+)-MS analysis indicated that Hg2+-induced desulfurization caused the large absorption response.

• 出版日期2011-2-2
• 单位苏州大学