Mechanics, Materials Science & Engineering, May 2017
ISSN 2412-5954
23
P. Supriya Prasad1, Praveen Kumar2, K. Bharathi1, V. Narayanan1,a 1
Department of Chemistry, DKM College for Women, Vellore, India
2
Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai, India
a
vnnara@yahoo.co.in DOI 10.2412/mmse.47.57.91 provided by Seo4U.link
Keywords: Vanadium (III) Schiff base complex, microwave irradiation, Vitamin-B6, differential pulse voltammetry, electrochemical polymerization.
ABSTRACT. The coordination chemistry of vanadium complexes have been focused more than half a century because of its interesting structural and chemical activities. The vanadium complexes are wide used in biological and industrial fields. The vanadium Schiff base complex was synthesized by simple and green chemical microwave irradiation synthetic process. The Schiff base ligand was synthesized by condensation reaction between 5bis (3-aminopropyl)ethylenediamine, with this Schiff base ligand vanadium(III) chloride was added for the formation of vanadium(III) Schiff base complex. The Schiff base ligand provide a tetradentate planar structure to vanadium (III) center metal for the formation of stable complex. It was characterized by FT-IR, UV-Visible, Raman and fluorescence spectral techniques. The electrochemical redox activity of vanadium (III) Schiff base complex was studied by cyclic voltammetry with three electrode system. The synthesized vanadium complex was utilized for the electrocatalytic sensing of vitamin B6. The vanadium (III) Schiff base complex was electrochemically polymerized, the polymer Schiff base vanadium complex was deposited on the surface of GCE. The modified GCE was exhibits an anodic peak for vitamin B6 at 1.25 V result we can conclude that the vanadium(III) Schiff base complex modified GCE has better electrocatalytic sensing activity for the determination of vitamin B6 and it can be used for real sample analysis.
Introduction. Schiff base ligands have considerable attention, because of its facile synthesis and wide range of applications in different fields. Schiff bases are privileged ligands due to their ligating behavior towards metal ions. The Schiff bases are synthesized by a simple one-pot condensation between a carbonyl group of ketone or aldehyde with amine, the carbonyl groups are replaced by an imine group in an alcoholic solvent [1]. More than a century, the Schiff base metal complexes have be materials, non-linear optics, electrocataytic sensors, catalyst in synthetic chemistry and photo physical studies. The Schiff base metal complexes have high stability in different oxidation states, hence these complexes have wide range of application. Among the various Schiff base metal complexes, the vanadium (III) have great interest in fast few decades due to its catalytic and medicinal importance. Vanadium is an important trace bio-element, it plays a vital role in many metabolic and mitogenic processes. To know the role of vanadium in biological process, it is necessity to carry out the studies in model vanadium complexes. The interactions of amino acids and peptides with vanadium complexes are better example for biological studies. The studies of vanadium (III) complexes have been investigated less than the corresponding chemistry of vanadium (IV or V) complexes. However, the vamadium (III) complexes can play important role in biochemical redox processes and there are organisms, such as ascidians in which the principal oxidation state of vanadium is +3. Even though the inorganic vanadium salts have less biological activities and toxicity, the complexation with organic ligands of vanadium leads to minimize the adverse effects. The 23
The Authors. Published by Magnolithe GmbH. This is an open access article under the CC BY-NC-ND license http://creativecommons.org/licenses/by-nc-nd/4.0/
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