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Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1074
Title: Highly selective and sensitive colourimetric detection of Hg2+ ions by unsymmetrical squaraine dyes
Authors: Shafeekh, K M
Rahim, M K A
Basheer, M C
Suresh, C H
Suresh Das
Keywords: Sodium tetraethyl borate
Aqueous-Media
Mercuric ion
TD-DFT
Near infrared
Fluorescence
Organomercurials
Squaraine dyes
Mercury
Issue Date: 2013
Publisher: Elsevier
Citation: Dyes and Pigments 96(3):714-721 Mar 2013
Abstract: A novel class of sulphonate group containing unsymmetrical squaraine dyes has been synthesized. These dyes show a selective and sensitive affinity towards Hg2+ in methanol and are practically insensitive to most other environmentally and biologically relevant metal ions. Isothermal titration calorimetric (ITC) studies and High Resolution Mass Spectral (HRMS) analysis indicate a 1:1 binding mode. H-1 and C-13 NMR of the isolated Dye ... Hg2+ adduct showed an unusual addition reaction of Hg2+ along the phenyl-squarate carbon-carbon bond which was also supported by TD-DFT calculations using PM6 level geometries.
URI: http://ir.niist.res.in:8080/jspui/handle/123456789/1074
ISSN: 0143-7208
Appears in Collections:2013

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