European Journal of Chemistry

An imidazole based colorimetric sensor for fluoride anion

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Shyamaprosad Goswami
Rinku Chakrabarty


Nine 2,3,5-triphenylimidazole derivatives having nitro and/or OH groups at their phenyl groups as receptors have been designed and synthesized for the colorimetric detection of F- ion, among which receptor (1) having a nitro group at the para position of the 2-phenyl group with respect to the imidazole moiety shows colorimetric responses (yellow to red) in acetonitrile-water (9:1, v:v) mixture towards F- anion selectively among other anions studied. Here nitro group acts as a signaling unit and OH and NH of imidazole moieties act as binding sites respectively.



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Goswami, S.; Chakrabarty, R. An Imidazole Based Colorimetric Sensor for Fluoride Anion. Eur. J. Chem. 2011, 2, 410-415.

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