Syntheses, Structures And Properties Of Coordination Polymers Based On Imidazophenanthroline Derivative With3D-4F Metals

The design and synthesis of metal organic coordination polymers with novel structure and excellent poperties have become a new trend in coordination chemistry and supramolecular chemistry. This paper aims at constructing coordination polymer with excellent luminescent properties and high thermal stability. Twenty-one coordination polymers under hydrothermally coditions have been designed and synthetized successfully with imidazolephenanthroline derivatives ligands, different organic dicarboxylic acids as auxiliary ligands with the transition(3d) and lanthanide metal ions(4f). Finally, the X-ray single crystal diffraction analysis, IR spectra, elemental analysis, fluorescence properties and TGA analysis method have been carried out to studied the structure and properties of coordination polymer.Chapter1:Fristly, the basic concept of coordination polymer and supramolecular chemistry have been summarized, then state the research progress of the coordination polymers of imidazophenanthroline derivative. Finally illustrated what this article rests on, the research significance and the research results of this thesis.Chapter2:Five new coordination polymers (1-5) have been hydrothermally synthesized using H3sfpip ligand reaction with transition metal ions (Pb2+、Zn2+and Cd2+). Complexes1-3show one dimensional linear chain, two dimensional double layer and three dimensional grid network structures respectively when we change the pH value, indicated different pH value plays a significant role for structure construction. The crystal structure and thermal stabilities of the complexes were studied, and their fluorescent properties of1-5were also discussed.Chapter3:Ten new coordination polymers (6-15) have been hydrothermally synthesized using H3sfpip ligand and different organic dicarboxylic acids as auxiliary ligands with lanthanides metal ions (La3+、Pr3+、Sm3+. Dy3+、Ho3+、Er3+and Y3+). All the complexes show two-dimensional to three-dimensional network structure, indicated auxiliary ligand plays an important role in the structure of the building. The crystal structures and thermal stabilities of the complexes were studied, and their luminescence characteristic of Pr3+、Sm3+and Dy3+ion in visible were also discussed.Chapter4:Three new coordination polymers (16-18) have been hydrothermally synthesized using H2cpip ligand reaction with main group and transition metal ions (Pb2+Cd2+and Mn2+). They are isostructural and show one-dimensional linear chain configurations. The crystal structuress、thermal stabilities of the complexes16-18and fluorescent properties of16and17were also discussed. Chapter5:Three new coordination polymers (19-21) have been hydrothermally synthesized using Hnpip ligand and organic dicarboxylic acids as auxiliary ligands reaction with transition metal ions (Pb2+and Mn2+). The crystal structures and thermal stabilities of the complexes were studied, and their fluorescent properties of19and20were also discussed.