Turn “Off–On” Fluorescent Recognition of Cu2+ and Cys in Aqueous Medium: Implementation of Molecular Logic Gate and Cell Imaging Studies

The present communication incorporates utilization of a simple Schiff base (RO) fruitfully for the turn “off-on” successive fluorescent recognition of Cu2+ and Cys in aqueous media. The single crystal of RO-Cu2+ ensemble revealed a binding pattern which ultimately leads to quenching of the green flu...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 2016-07, Vol.89 (7), p.754-761
Main Authors: Kumar, Virendra, Kumar, Ajit, Diwan, Uzra, Singh, Manish Kumar, Upadhyay, K K
Format: Article
Language:English
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Summary:The present communication incorporates utilization of a simple Schiff base (RO) fruitfully for the turn “off-on” successive fluorescent recognition of Cu2+ and Cys in aqueous media. The single crystal of RO-Cu2+ ensemble revealed a binding pattern which ultimately leads to quenching of the green fluorescence of RO. Interestingly the quenched fluorescence of the RO-Cu2+ ensemble was revived selectively in the presence of Cys via Cu2+ displacement approach. The selective “off-on” behavior of RO towards Cu2+ and Cys was consequently used as inputs to build up an implication (IMP) logic gate. Moreover, the RO exhibited successful bio-imaging of Cu2+ and Cys also in E. coli cells.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.20150427