Synthesis,Structures And Properties Of Bipyrazole-CuX Coordination Polymer

In recent decades,metal-organic porous coordination polymers have been research hotspots in the field of functional materials due to their high specific surface area and large porosity,and play a very important role in their applications of heterogeneous catalysis,gas adsorption and separation,and fluorescent probes.Metal-organic porous coordination polymers are composed of organic ligands and inorganic metal ions or metal clusters with a certain coordination.By selecting different organic ligands and different metal salts or changing the reaction conditions,it is possible to design and synthesize different metal-organic porous coordination polymers with special structural properties.It's special physical and chemical properties are affected by the raw materials of polymers,so the choices of the combined structural unit are very important.By reviewing relevant literature,to understand the related application fields and research hotspots of metal-organic porous coordination polymers,and in combination with our experimental conditions,this paper selects 3,3',5,5'-tetramethyl-4,4'-bipyrazole?Bpz?as the organic ligand,and then studies its coordination with cuprous halide?Cu I?Cu Br?Cu Cl?,cuprous cyanide?Cu CN?and cuprous thiocyanate?Cu SCN?.Combined with the experimental characterization technology,the structure,special properties and stability of various Cu???coordination polymers were analyzed,as well as their similarities and differences were studied.The main research contents are summarized below?as follow?.In Chapter 1,we mainly introduced the research background of this research topic and the research progress in different fields,then also introduces the design of the coordination polymer molecular framework structure.Finally,the significance of the topic and the research content of this paper are summarized.In Chapter 2,the 3,3',5,5'-tetramethyl-4,4'-bipyrazole was selected as the organic ligand,and four metal-organic porous coordination polymers with three-dimensional structures?compound 1,2,3 and 4?:TCu I,TCu Br,TCu Cl,and TCu CN were obtained through coordination reactions with Cu I,Cu I,Cu Cl,and Cu CN respectively,which have the same topological network structure.We have simulated and analyzed the structure of these four complexes;considering their special pore structure and active adsorption sites,and then we studied them adsorption and desorption of corrosive and toxic gases Br₂and Cl₂.In Chapter 3,the 3,3',5,5'-tetramethyl-4,4'-bipyrazole was selected as the organic ligand,and two kinds of metal-organic porous coordination polymers?compound 5,and 6?were obtained by solvothermal method through coordination reactions with Cu CN.We have studied the effects of reaction conditions on the formation of two different complexes,and also studied the simulation and analysis of the structure and coordination environment of the two complexes.Considering that these two complexes have fluorescence,the photoluminescence properties of two kinds of compounds are studied.In Chapter 4,we selected 3,3',5,5'-tetramethyl-4,4'-bipyrazole as the organic ligand and Cu SCN as the reaction metal salt,a metal-organic porous coordination polymer?compound 7?were synthesized by solvothermal method.The structure and coordination environment of the complex were analyzed and the thermogravimetric analysis and characterization showed that the complex had good structural stability.