A new colorimetric chemodosimeter for Hg2+ based on charge-transfer compound of N-methylpyrrole with TCNQ

被引：23
|
作者：
Kaur, Paramjit [1 ]
Kaur, Sandeep [1 ,2 ]
Kasetti, Yoganjaneyulu [3 ]
Bharatam, Prasad. V. [3 ]
Singh, Kamaljit [2 ]
机构：
[1] Guru Nanak Dev Univ, Dept Chem, Amritsar, Punjab, India
[2] Guru Nanak Dev Univ, Organ Synth Lab, Dept Appl Chem Sci & Technol, Amritsar, Punjab, India
[3] NIPER, Dept Med Chem, Sas Nagar, India
来源：
TALANTA | 2010年 / 83卷 / 02期
关键词：
Charge-transfer; TCNQ; Colorimetric; Chemodosimeter; Mercury; SP(3) C-H; SEMIEMPIRICAL METHODS; BOND ACTIVATION; SENSOR; MERCURY; METAL; OPTIMIZATION; CHEMOSENSOR; DERIVATIVES; PARAMETERS;
D O I：
10.1016/j.talanta.2010.10.019
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：644 / 650
页数：7
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