Highly selective and sensitive colourimetric detection of Hg2+ ions by unsymmetrical squaraine dyes

dc.contributor.author	Shafeekh, K M
dc.contributor.author	Rahim, M K A
dc.contributor.author	Basheer, M C
dc.contributor.author	Suresh, C H
dc.contributor.author	Suresh Das
dc.date.accessioned	2014-01-21T06:13:57Z
dc.date.available	2014-01-21T06:13:57Z
dc.date.issued	2013
dc.identifier.citation	Dyes and Pigments 96(3):714-721 Mar 2013	en_US
dc.identifier.issn	0143-7208
dc.identifier.uri	http://ir.niist.res.in:8080/jspui/handle/123456789/1074
dc.description.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.	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	Sodium tetraethyl borate	en_US
dc.subject	Aqueous-Media	en_US
dc.subject	Mercuric ion	en_US
dc.subject	TD-DFT	en_US
dc.subject	Near infrared	en_US
dc.subject	Fluorescence	en_US
dc.subject	Organomercurials	en_US
dc.subject	Squaraine dyes	en_US
dc.subject	Mercury	en_US
dc.title	Highly selective and sensitive colourimetric detection of Hg2+ ions by unsymmetrical squaraine dyes	en_US
dc.type	Article	en_US