A simple Michael acceptor type quinoline derivative for highly selective sequential recognition of CN super(-) and Cu super(2+) in aqueous solution
A 2-(quinolin-2-ylmethylene) malononitrile (6) chemosensor has been designed and synthesized. The fluorogenic properties of 6 toward different anions and metal ions were investigated in DMSO/H sub(2)O (1 : 9, v/v) solution. Probe 6 exhibits high selectivity and sensitivity (5.09 10 super(-8) M) to C...
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Published in | RSC advances Vol. 5; no. 62; pp. 49953 - 49957 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.06.2015
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Subjects | |
Online Access | Get full text |
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Summary: | A 2-(quinolin-2-ylmethylene) malononitrile (6) chemosensor has been designed and synthesized. The fluorogenic properties of 6 toward different anions and metal ions were investigated in DMSO/H sub(2)O (1 : 9, v/v) solution. Probe 6 exhibits high selectivity and sensitivity (5.09 10 super(-8) M) to CN super(-) as fluorescence "off-on" behavior through Michael addition. Moreover, the in situ formed 6-CN super(-) is further utilized to sense the Cu super(2+) through complexation reaction with high selectivity and fluorescence quenching performance in aqueous water. Probe 6 has selectively detected CN super(-) in real water sample, and on test strips. The FTIR, super(1)HNMR and ESI-MS spectroscopy supported the proposed mechanism of interaction. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-2 |
ISSN: | 2046-2069 |
DOI: | 10.1039/c5ra08238b |