Synthesis And Adsorption Properties Of MOFs Based On Pyridinium Or Carbazole-based Organic Ligand And Diphthalic Acid

The study of the synthesis and properties of metal-organic frameworks(MOFs)driven by the self-assembly as a synthetic method is a hot topic in materials chemistry science.It involves the multi-disciplinary fields such as metal organic synthesis and coordination chemistry and lays the foundation for the research of many basic disciplines.MOFs have their own characteristics compared with traditional organic supramolecular and inorganic mesoporous materials.It has potential applications in gas storage,adsorption separation,sensing,catalysis,biomedicine and other fields.In this paper,a series of ligands were synthesized by using hydrazine and carbazole.Using solvothermal method,14 compounds were obtained by self-assembly with transition metals.Their structures were characterized by X-ray single crystal diffraction,XRD,TGA and infrared.Their gas adsorption performance was further tested.1.Seven kinds of fluorene series organic ligands with different alkyl chain length were synthesized,and 11 Ni(?)-MOFs based on fluorenyl organic ligands with different microenvironment were synthesized by solvothermal method.And their self-assembly rules were studied.?.The adsorption properties of the self-assembled MOFs were characterized by the use of anthraquinone ligands as precursors.Through comparison,it was explored that when the ligands were identical,the non-coordinated functional groups of the co-ligands were changed,and when the co-ligands were the same,the changes were made.Fluorene alkyl chain length of the substituent,thereby changing MOFs pore micro-environment within the MOFs on the gas adsorption properties.?.One carbazole organic ligand was synthesized,and the co-ligand and transition metal ions were self-assembled by solvothermal method to obtain two Ni(?)-MOFs.Their structures were characterized by single crystal X-ray diffraction.