Synthesis and Characterization of a Novel o-Vanillin Schiff Base Derivatives and Their Complexes With Zn(II)

A Schiff base compound (H2L) was synthesized using o-vanillin and o-phenylenediamine, and then the zinc Schiff base complex was obtained by the reaction of zinc acetate. They were characterized by elemental analysis, the infrared spectroscopy (IR), thermogravimetric analysis (TG), fluorescence spectrometer (PL), and antioxidative activity. For Zn(II) complex, fluorescence spectrum shows that excitation of solid sample at 380 nm produces a strong emission with the peak maximum at 596 nm, the ligands display their characteristic emission peaks at 550 nm. The results illustrate that the complex and the ligand inhibition rate were up to 42.55%, 37.27%, respectively, when the concentrations were 10 mg mL−1.