SYNTHESIS AND LUMINESCENCE SPECTRA OF THE COBALT(II) COMPLEX WITH KOJATE

A new complex, Co(koj)2·H2O (Hkoj: kojic acid), was synthesized, and its IR spectrum indicated that kojates in it are coordinated to cobalt as bidentate ligands. When the complex was excited with ultraviolet light, it exhibited luminescence spectra having maxima at about 20000 cm−1 in aqueous and acidic solutions, and even in the solid state.