Study On The Syntheses And Struture And Perfomance Of Coordination Polymers Based On Pyrazole Carboxylic Acids

Recently, increasing attention has been paid to the design and synthesis of metal-organic frameworks(MOFs), not only because of their potential applications as functional materials in gas storage, ion-exchange, catalysis, electrical conductivity,nonlinear optical devices and magnetism, but also owing to their diverse and interesting structures.This paper was focused on the coordination polymers based on pyrazole-carboxylic acids. Pyrazole carboxylic acid is an important ligand of the nitrogen heterocyclic carboxylic acid. It posesses a pyrazole ring and carboxylic acids which possesses good coordination ability and the diversity of coordination, etc. The single pyrazole-carboxylic acids are 3,5-Pyrazole dicarboxylic acid or pyrazole-3-carboxylic acid, which the caboxylic acid connects with the pyrazole ring directly. These molecules are small in volume, but they can conjugate and be deprontoned half or fully, which advantages the coordination with transition metals or with the rare earth. The selection of ancillary ligand is also of crucial importance in the disegn and synthesis of coordination polymers. In this paper,we use1,4-dicarboxybenzene and succinic acid as the ancillary ligand. We discussed about the structure and performance of the coordination polymer based on these ligands.This paper was divided into five chapters.The first chapter introduced the backgrounds of the research, containing the category of coordinations, synthesis methods, and its applications. We systematically disciplined the main products and progress in this field, and stated the purpose and meaning of choosing this research.The second chapter introduced the main reagents and instruments,and abbreviation of relevant reagents. Methods of characterization analysis were also stated in this chapter.A series of transition polymer was synthesized in the third chapter. Solution method and hydro-thermal method ware used to synthesize the tetranucleate Co-polymer, and 1D Cu-polymer, and 2D Cd-polymer, and 1D heterometallic coordination and one non-centrosymmetric coordination polymer and 3D Cd-polymerA series of are earth-polymer was synthesized in the fifth chapter. The solution method was mainly used in the chapter.The last part of the paper was a summary of this paper.