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Issue 62, 2015
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A simple Michael acceptor type quinoline derivative for highly selective sequential recognition of CN and Cu2+ in aqueous solution

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Abstract

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/H2O (1 : 9, v/v) solution. Probe 6 exhibits high selectivity and sensitivity (5.09 × 10−8 M) to CN as fluorescence “off–on” behavior through Michael addition. Moreover, the in situ formed 6-CN is further utilized to sense the Cu2+ through complexation reaction with high selectivity and fluorescence quenching performance in aqueous water. Probe 6 has selectively detected CN in real water sample, and on test strips. The FTIR, 1HNMR and ESI-MS spectroscopy supported the proposed mechanism of interaction.

Graphical abstract: A simple Michael acceptor type quinoline derivative for highly selective sequential recognition of CN− and Cu2+ in aqueous solution

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Supplementary files

Article information


Submitted
05 May 2015
Accepted
01 Jun 2015
First published
04 Jun 2015

RSC Adv., 2015,5, 49953-49957
Article type
Communication

A simple Michael acceptor type quinoline derivative for highly selective sequential recognition of CN and Cu2+ in aqueous solution

Y. Zhu, H. Li, G. Yan, B. Shi, Y. Zhang, Q. Lin, H. Yao and T. Wei, RSC Adv., 2015, 5, 49953
DOI: 10.1039/C5RA08238B

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