Synthesis, Characterization and Electrochemical Studies of Schiff Bases Containing 4-Aminobenzoic Acid Moeity

Abstract

The use of Schiff bases in material science, therapeutics and sensor has been achieved due to its electrochemical potentials. In this study, Schiff bases of 4-((2-hydroxybenzylidene)amino)benzoic acid (G1) and 4-((5-bromo-2-hydroxybenzylidene)amino)benzoic acid (G2) were synthesized from 4-aminobenzoic acid. The compounds were characterized using FTIR, ESI-MS and 1H NMR which confirm the synthesized compounds. The electrochemical behaviour of both ligands was studied in triethylammonium phosphate acetonitrile solution. The cyclic voltammetry of G1 and G2 Schiff bases resembled voltammograms with one or two quasi-reversible redox processes, indicating redox potentials of the ligands. The electrochemical screening showed that the ligands would exhibit significant binding interactions with molecules such as metal ions and biological models.