Synthesis, Structure And Properties Of Metal-Organic Frameworks Materials Based On Containing Nitrogen And Dicarboxylate Ligands

Metal-organic frameworks ?MOFs? composed of metal ions or metal clusters as nodes and multitopic organic ligands as linkers have received considerable attention due to scientic interest in the creation of nanometer-sized spaces and for their potential applications in sensor, separation, gasstorage, and heterogeneous catalysis technologies, corrosion protectants. In the last 30 years, numerous MOF materials with unique structures and captivating topological networks have been successfully synthesized, which establishes the foundation for targeted synthesis of MOFs with designed structures and properties. With the deepening of structure research, the exploitation of multiple functions of MOFs has become the focus of this research field. Therefore, rational design and synthesis of MOFs with fascinating structures and desired properties have a great significance in developing novel functional materials.In this work, we selected lH-benzotriazole ?Hbtz? as multidentate N-donor ligands, multitopic dicarboxylate ligands as co-ligand to construct novel MOFs materials under solvothermal conditions. Referring to our previous literature, we synthesized a three-dimensional fourfold dia framework [Zn₅?btz?₆?NH₂bdc?₂?H₂O?₂]·7DMA ?1?. Compound 1 possesses significant void space, excellent luminescence properties. Compound 1 can as luminescent probes with multifunctional sensitivity to detect metal ions and solvents. Subsequently, we fortunately synthesized a fascinating topology compound [Zn₅?btz?₆?ndc?₂?H₂O?]-3DMA ?2?. Compound 2 is 4-connected two-fold interpenetrated framework, To the best of our knowledge, only one example of coordination polymer with mdf topology has been obtained so far. Compound 2 exhibits four-connected uninodal net with point symbol 86 and the long vertex symbol ?8₁.8₃.8₄.8₄.8₄.8₄?. It shows exceptional resistance to acid/base aqueous solutions and luminescence properties. In addition, we selected 5-Nitrobenzimidazole and 2-Bromoterephthalic acid construct a 1-D frameworks under hydrothermal conditions, it possess good thermal and air/moisture stability. And it acts as luminescent probes.