Journal
TETRAHEDRON LETTERS
Volume 55, Issue 5, Pages 1052-1056Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.12.080
Keywords
Fluorescence; Chemodosimeter; CN-; DFT
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Funding
- Council of Scientific and Industrial Research (CSIR) New Delhi
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A simple quinoline derived probe 3 has been described. Probe 3 having aldehyde function upon interaction with cyanide undergo nucleophilic addition reaction to form cyanohydrin derivative 4 in which fluorescence intensity enhances significantly, 'turn-on' by photoinduced electron transfer (PET) OFF-ON mechanism. The color of probe solution switched-on to fluorescent blue which is visible to the naked-eye. Job's plot analysis revealed a 1:1 stoichiometry for an interaction between 3 and cyanide along with detection limit 0.058 mu M (1.5 ppb). The mode of interaction to detect cyanide in aqueous medium through a reaction based chemodosimeter approach has been confirmed by NMR, mass, FTIR, and DFT data analysis. (C) 2014 Elsevier Ltd. All rights reserved.
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