Study on Synthesis and Antibacterial Performance of Rare Earth Ternary Complexes

In this paper,the complexes of rare earth Schiff base 8-hxyquinoline were prepared via liquid-phase deposition method.The molecular structures of the synthesized complexes were identified by magnetic resonance spectra and infrared spectra techniques.The antimicrobial effects of the obtained ternary rare earth complexes were studied.The results show that the complexes have different antimicrobial effects on the E.coli,bacillus subtilis and penicillium.The synthesized complexes have a moderate antibacterial activity against bacillus subtilis,better antibacterial effect against E.coli,and best antibacterial effect against penicillium.The antibacterial effect of Gd,Tb and Yb complexes are better than La and Nd complexes,which can be illustrated that the antibacterial performance of the complexes of middle and heavy rare earth complexes are better than the complexes of light rare earth.At room temperature,the antimicrobial effects of five kinds of rare earth ternary complexes on the three kinds of bacteria inhibition can keep more than a week,which can be indicated that the synthesized ternary complexes have good stability antimicrobial effects.