Synthesis and characterization of a Schiff base derived from 2-aminobenzylamine and its Cu(II) complex: Electropolymerization of the complex on a platinum electrode

A precursor (H3A) was synthesized by the mono condensation of 2-aminobenzylamine with salicylaldehyde and then a tetradentade Schiff-base ligand (H2L) prepared by using H3A and 3-methoxysalicylaldehyde. The copper(II) complex of this new ligand was prepared and characterized by elemental analysis, electronic absorption, Fourier transform infrared (FT-IR), and magnetic susceptibility. For the ligand, 1H- and 13C-NMR and liquid chromatography mass spectrometry (LC-MS) spectra were obtained. The tetradentate ligand is coordinated to Cu(II) through the phenolic oxygen and azomethine nitrogen. The use of this metal complex in the preparation of a modified electrode is also described. CuL was electropolymerized on a platinum electrode surface in a 0.1 mol dm-3 solution of lithium perchlorate in acetonitrile by cyclic voltammetry between 0 and 1.6 V versus Ag/Ag+. Electrochemical properties of the electroactive polymeric film have been investigated and a surface confined polymerization mechanism was proposed. © 2010 Taylor & Francis.Institute for Research in Fundamental SciencesThe authors are grateful to the Science Research Fund of the C¸ ukurova University in Turkey for supporting this study (project no. FEF2009YL-3) and to the Department of Chemistry of Mustafa Kemal University for allowing the use of its laboratory facilities