Studies Of Metal-organic Frameworks Built From Tetrazole Ligands As Highly Selective Catalysts And Ion Exchange

Metal-organic frameworks?MOFs?materials are a burgeoning class of functional solid-state materials that are already being explored for use in multiple areas ranging from optical to energy storage,catalysis and so on.Due to their features such as porosity,large surface areas and tunable structure and function,MOFs are particularly fit for ions recognition and catalytic reactions.In our previous,we choose 4,5-bis?tetrazol-5-yl?imidazole?L1?,2,2?-diethoxy-1,1?binaphthyl-4,4?,6,6?-tetracarboxylic acid ligand?L2?,and 2,2?-diethoxy-1,1?binaphthyl-4,4?,6,6?-tetra-2H-tetrazole ligand?L3?ligand,as multidentate bridge ligands to construct 13 novel complexes via solvothermall conditions.This paper includes two parts:1.The combination of rigid ligand L1 with transition metal ions?Zn2+,Co2+?affords five coordination polymers under solvothermal conditions.Fluorescence spectra showed that Zn-MOF was promised to apply fluorescent material.Furthermore,MOF 1-5 as heterogeneous catalysts could catalyze acylation-Nazarov cyclization reaction to form cylcopenta.The possible causes that affects catalytic reaction are analyzed2.By the usement of tetradentate ligand L2 and L3,a novel 3D framework of?[Cd2L2?DMF?2?H2O?2]n?6 and a 1D framework of?[Cu₂L₃?DMF?₂?H₂O??NH₃?₄]n?₇ were prepared.We explored the proesses of Cu/Cd,Co/Cd,Ni/Cd ion exchange,the results showed that these accords with rule of the Irving–Williams series.MOF 6 is a fluorescent material with strong fluorescence,we have carefully study its application in detection of nitro compound.According to data analysis,the number of nitro groups is important influence factors to the sensitive detection of nitro compound.3.The design of ligands,we introduced tetraphenyl ethylene to synthesis copper complexes,including complexes cage structure,pore structure,three-dimensional structure without holes.