| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 176748 | Dyes and Pigments | 2013 | 8 Pages |
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. 1H and 13C 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.
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Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
K.M. Shafeekh, M.K.A. Rahim, M.C. Basheer, C.H. Suresh, S. Das,