Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 223, Issue -, Pages 172-177Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.09.082
Keywords
Mercury ion; Carbazole; Azobenzene; Colorimetric; Fluorescence; Chemosensor
Funding
- Natural Science Foundation of Hubei Province of China [2013CFB005]
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In this paper, a thioacetal chemosensor 1 incorporating simultaneously a carbazole moiety and an azobenzene moiety was synthesized. Among other metal ions, Hg2+ proved to be able to selectively induce both color and fluorescence changes of I. The mechanism of Hg2+-promoted cleavage of thioacetal was confirmed by H-1 NMR experiments. Upon the addition of Hg2+ into the yellow CH3CN/H2O solution of 1, the resultant azobenzene-containing thioglycolamide was precipitated from the solution as a mercuric salt, leading to a colorless solution. Therefore, a novel color change pattern was developed. (C) 2015 Elsevier B.V. All rights reserved.
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