Construction And Luminescence Properties Of Lanthanide Complexes With Multi-Benzene Schiff Base Ligands

In this thesis,four new multi-benzene Schiff base ligands were synthesized from the reactions of aldehydes（i.e.2-hydroxy-3-methoxybenzaldehyde and5-Bromo-2-hydroxy-3-methoxybenzaldehyde）and diamines containing benzene rings（i.e.1,2-bis（o-aminophenoxy）ethane,4,4’-oxydianiline and{[4-（2-amino-ethyl）-phenoxy]-phenoxy}-aniline）.The structures of these multi-benzene Schiff base ligands were confirmed by ¹HNMR spectra.Six series of lanthanide complexes were synthesized from the reactions of multi-benzene Schiff base ligands with metal salts,including two di-nuclear complexes Cd-Ln（Ln=La and Nd）,two different series of tri-nuclear complexes Cd-Ln₂（Ln=La,Pr and Nd）,seven quad-nuclear complexes Ni₂-Ln₂（Ln=Yb and Er）and Zn₂-Ln₂（Ln=Nd,Yb and Er）,three nine-nuclear complexes Ln₉（Ln=Nd,Yb and Gd）.These lanthanide complexes were characterized by UV,X-ray diffractometer,thermogravimetry and elemental analysis.The luminescence properties of these lanthanide complexes,as well as their fluorescent response towards metal ions and explosives,were studied in this thesis.