A Coumarin-Based Luminescent Chemosensor for Recognition of Cu2+ and its In-Situ Complex for CN- Sensing via Cu2+ Displacement Approach

Mukherjee Soma; Talukder Shrabani

doi:10.1007/s10895-016-1974-1

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A Coumarin-Based Luminescent Chemosensor for Recognition of Cu2+ and its In-Situ Complex for CN- Sensing via Cu2+ Displacement Approach

作者：Mukherjee Soma; Talukder Shrabani

来源：Journal of Fluorescence, 2017, 27(5): 1567-1572.

DOI：10.1007/s10895-016-1974-1

摘要

A new coumarin based chemosensor has been developed for selective fluorescent recognition of Cu2+ in MeOH/H2O (4:1, v/v at pH = 7.2 aqueous solution) medium with 1:1 binding stoichiometry. The in-situ prepared Cu2+ complex displays high selectivity towards CN- via Cu2+ displacement approach with detection limit in the micro molar range. Moreover, in presence of Cu2+, the receptor exhibits reversible emission change with EDTA and thus offers an interesting property of molecular 'IMPLICATION' logic gate with Cu2+ and EDTA as chemical inputs.