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A new colorimetric chemodosimeter for Hg2+ based on charge-transfer compound of N-methylpyrrole with TCNQ |
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| Authors: | Kaur Paramjit Kaur Sandeep Kasetti Yoganjaneyulu Bharatam Prasad V Singh Kamaljit |
| Institution: | a Department of Chemistry, Guru Nanak Dev University, Amritsar, India b Organic Synthesis Laboratory, Department of Applied Chemical Sciences and Technology, Guru Nanak Dev University, Amritsar, India c Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S Nagar, India |
| Abstract: | 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. |
| Keywords: | Charge-transfer TCNQ Colorimetric Chemodosimeter Mercury |
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