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A Rational Designed Dual‐channel Chemosensor for Mercury Ions Based on Hydrolysis of Schiff Base
Author(s) -
Wu Guiyuan,
Shi Bingbing,
Hu Bing,
Zhang Youming,
Lin Qi,
Yao Hong,
Wei Taibao
Publication year - 2014
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201400093
Subject(s) - chemistry , schiff base , mercury (programming language) , ion , hydrolysis , selectivity , naked eye , detection limit , combinatorial chemistry , photochemistry , inorganic chemistry , chromatography , polymer chemistry , organic chemistry , computer science , programming language , catalysis
A bilateral Schiff base is reported for the colorimetric and fluorometric dual‐channel sensing of Hg 2+ ions by taking advantage of the hydrolysis of carbon‐nitrogen double bond, altering an ICT state mechanism and then Hg 2+ ions coordinating with amino moieties of 1,5‐DAN and leading to the aggregation of 1,5‐DAN. Meanwhile, it formed a stable neutral complex of amino‐Hg‐amino. In addition, test strips based on L were fabricated, which also exhibited a good selectivity to Hg 2+ as in solution. This work provides a novel approach for the selective recognition of mercury ions. Notably, the color changes are very significant and all the recognition processes can be observed by the naked eyes. We believe the test strips can act as a convenient and efficient Hg 2+ test kit.