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Issue 10, 2015
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A novel coumarin based molecular switch for dual sensing of Zn(II) and Cu(II)

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Abstract

An efficient coumarin based molecular switch for the dual sensing of two environmentally as well as biologically important cations Zn2+ and Cu2+ has been synthesized. The receptor H2L shows about 6 fold enhancement in fluorescence intensity upon the addition of Zn2+ and also exhibits quenching of emission intensity upon the addition of Cu2+ without interference of other metal ions present in solution. In the case of other metal ions no significant change in the emission intensity is observed. H2L presents a tunable system comprising of two INHIBIT logic gates with Zn2+ and Cu2+ or Zn2+ and EDTA as chemical inputs by monitoring the emission mode. An IMPLICATION logic gate is obtained with Cu2+ and EDTA as chemical inputs and emission as the output mode.

Graphical abstract: A novel coumarin based molecular switch for dual sensing of Zn(ii) and Cu(ii)

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Publication details

The article was received on 30 Oct 2014, accepted on 22 Dec 2014 and first published on 22 Dec 2014


Article type: Paper
DOI: 10.1039/C4RA12920B
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Citation: RSC Adv., 2015,5, 7647-7653
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    A novel coumarin based molecular switch for dual sensing of Zn(II) and Cu(II)

    D. Sarkar, A. K. Pramanik and T. K. Mondal, RSC Adv., 2015, 5, 7647
    DOI: 10.1039/C4RA12920B

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