Synthesis of Vanadium (III) Schiff Base Complex and its Electrocatalytic Sensing Application

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P. Supriya Prasad, Praveen Kumar, K. Bharathi, V. Narayanan (2017). Synthesis of Vanadium (III) Schiff Base Complex and its Electrocatalytic Sensing ApplicationMechanics, Materials Science & Engineering, Vol 10. doi:10.2412/mmse.47.57.91

Authors: P. Supriya Prasad, Praveen Kumar, K. Bharathi, V. Narayanan

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 5-chlorosalicylaldehyde and N, N’-bis (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 with peak current 8.89 μA. The bare GCE shows the oxidation potential at 1.28 V with peak current is 7.77 μA. From the 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.

Keywords: Vanadium (III) Schiff base complex, microwave irradiation, Vitamin-B6, differential pulse voltammetry, electrochemical polymerization

DOI 10.2412/mmse.47.57.91

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