查看文章

Copper, cobalt and zinc-salophen complexes 3–8 were prepared from the reaction of N,N-bis(salicylidene)4-chloro-1,2-phenylendiamine (1) or N,N-bis(salicylidene)4-bromo-1,2-phenylendiamine (2) with their respective acetate salts. All compounds were characterized with common techniques. In additional, optical, electrochemical, thermal and antibacterial properties of ligands and their complexes were studied. Schiff base ligands 1 and 2 showed the intense emission band at 476 nm in the fluorescence spectra. The emission process of these ligands is related to the excited state intramolecular proton transfer phenomenon (and also π→π* transitions). In general, after the incorporation of copper, cobalt and zinc metal ions into the structure of ligands 1 and 2, the emission intensity of the ligands totally quenched. It can be attributed to the changes in the conformational rigidity of the structure of ligands upon …