Shafeekh, K.M. ; Rahim, M.K.A. ; Basheer, M.C. ; Suresh, C.H. ; Das, S. (2013) Highly selective and sensitive colourimetric detection of Hg2+ ions by unsymmetrical squaraine dyes Dyes and Pigments, 96 (3). pp. 714-721. ISSN 01437208
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Official URL: http://doi.org/10.1016/j.dyepig.2012.11.013
Related URL: http://dx.doi.org/10.1016/j.dyepig.2012.11.013
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Ltd. |
| ID Code: | 127412 |
| Deposited On: | 13 Oct 2022 09:40 |
| Last Modified: | 13 Oct 2022 09:40 |
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