The Construction Of Metal-organic Framework Materials Based On Carboxylic Acid Bridged Ligands And Their Separation And Optical Properties

Metal-organic frameworks?MOFs?,which constructed from the self-assembly of organic ligands with metal ions or metal clusters,have emerged as one of potential porous materials in storage and separation,catalysis,magnetism and nonlinear optics,due to their unique properties of controllable synthesis,structural diversity and fine-tuned porosity,etc.Therefore,the design and synthesis of novel and unique metal organic coordination materials has attracted great attentionIn recent years,metal-organic gel?MOG?matrix with tunable pore sizes ranging from micropore to macropore,derived from metal-organic frameworks,has attracted great attention for their enhanced pore accessibility comparing with these multifunctional PCP materials themselves.To the best of our knowledge,the homochiral porous materials based on MOGs have not been adopted in traditional chromatographic techniques.In the first chapter of the dissertation,we synthesized a novel hybrid hierarchical porous stationary phases of homochiral MOGs@SiO2composite with traditional spherical silica as substrate based on a convenient sol-gel processing.Then,this homochiral material,as CSPs,was used for the efficient HPLC separation of many enantiomers.In the second part of the dissertation,we designed and synthesized the organic bridging ligand 4,4',4'',4'''-??benzo[c][1,2,5]thiadiazole-4,7-diylbis?4,1-phenylene??bis?azanetriyl??tetrabenzoic acid with fluorescent properties.The ligand wasself-assembled with zinc nitrate hexahydrate to obtain a metal organic framework[Zn₂L?DMF?₄]_n,named MOF-1,and its structural characterization and properties were studied.