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Thiourea based novel chromogenic sensor for selective detection of fluoride and cyanide anions in organic and aqueous media

Kumar, Vinod and Kaushik, MP and Srivastava, AK and Pratap, Ajay and Thiruvenkatam, V and Row, TN Guru (2010) Thiourea based novel chromogenic sensor for selective detection of fluoride and cyanide anions in organic and aqueous media. In: Analytica Chimica Acta, 663 (1). pp. 77-84.

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Abstract

Novel chromogenic thiourea based sensors 4,4'-bis-[3-(4-nitrophenyl) thiourea] diphenyl ether 1 and 4,4'-bis-[3-(4-nitrophenyl) thiourea] diphenyl methane 2 having nitrophenyl group as signaling unit have been synthesized and characterized by spectroscopic techniques and X-ray crystallography. The both sensors show visual detection, UV-vis and NMR spectral changes in presence of fluoride and cyanide anions in organic solvent as well as in aqueous medium. The absorption spectra indicated the formation of complex between host and guest is in 1:2 stoichiometric ratios. (C) 2010 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Chromogenic sensor; Naked-eye detection; Fluoride and cyanide detection; Thiourea; Aqueous solution
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 29 Mar 2010 06:32
Last Modified: 19 Sep 2010 05:58
URI: http://eprints.iisc.ernet.in/id/eprint/26627

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