A new colorimetric chemodosimeter for Hg2+ based on charge-transfer compound of N-methylpyrrole with TCNQ
| Autor: | Paramjit Kaur, Sandeep Kaur, Kamaljit Singh, Yoganjaneyulu Kasetti, Prasad V. Bharatam |
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| Rok vydání: | 2010 |
| Předmět: |
Models
Molecular Magnetic Resonance Spectroscopy Metal ions in aqueous solution Molecular Conformation Solid-state Mineralogy Electrons Crystallography X-Ray Photochemistry Analytical Chemistry Ion Metal chemistry.chemical_compound Nitriles Pyrroles Colorimetry HEPES Regioselectivity Mercury Methylmercury Compounds Oxygen Models Chemical chemistry visual_art visual_art.visual_art_medium Spectrophotometry Ultraviolet Density functional theory Software |
| Zdroj: | Talanta. 83:644-650 |
| ISSN: | 0039-9140 |
| DOI: | 10.1016/j.talanta.2010.10.019 |
| Popis: | Reaction of N-methylpyrrole and 7,7,8,8-tetracyanoquinodimethane (TCNQ) furnishes an intense blue unsymmetrical charge-transfer compound through regioselective attachment of tricyanoquinodimethane at the 2-position of N-methylpyrrole which was found to be selective chemodosimeter for Hg2+ ions in CH3CN:H2O mixture (1:1 v/v, pH = 7.0, 0.01 M HEPES, 0.15 M NaCl) as well as in the solid state when supported on silica, over a variety of metal ions. A plausible mechanism for the sensing process has been proposed and supported through the characterization of the resulting Hg2+ complex and the density functional theory (DFT) studies. |
| Databáze: | OpenAIRE |
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