The Synthesis And Properties Of Novel Metal-organic Framework Based On Azolate Ligand

Metal-Organic Frameworks (MOFs) have been developing rapidly in recent decades. Metal-organic framework materials with new structure, excellent performance have been synthesized and reported. In this paper, we synthesized two azolate ligands (one rigid ligand and one flexible ligand) and then prepared eight metal-organic frameworks containing one-dimensional chain, two-dimensional, three-dimensional network structure. The crystal structures of these frameworks were measured; the IR spectroscopy, fluorescence spectroscopy, thermal stability, solvent stability and solvent adsorption properties of these frameworks were analyzed .The main research can be divided in several parts.Synthesis of benzo-bis(imidazole) (H2BBI) (rigid ligand) and 3,3,5,5-Tetramethyl-4,4-bipyrazolyl (4,4’-bpz) (flexible ligand).Synthesis of 5 metal-organic frameworks by solvothermal method and the properties analysis of these 5 frameworks:H2BBI and Zn(Ⅱ), Cd(Ⅱ), Cu(Ⅱ), Co(Ⅱ) were utilized to synthesize 5 metal-organic frameworks{[Co(H2BBI)(DMSO)2Cl2]n, DMSO = dimethyl sulfoxide}(1), [Cu2(H2BBI)3(DMSO)6(NO3)4]n (2),{[Zn(BBI)(MSM)(DMSO)]n, MSM = methylsulfonylmethane}(3), [Zn2Cl2(BBI)(MSM)]n (4) and [Cd2Cl2(BBI)(DMSO)2]n (5).1 is a 1D zigzag structure. 2 is a 2D structure with fluorescence property. 3 is a 3D structure.4 is a 2D structure with chemistry stability. 5 is a 2D structure with selective solvent adsorb property.Synthesis of 3 metal-organic frameworks by solvothermal method and the structure measurements of these 3 frameworks:[ZnSO4(4,4’-bpz)]n (6), [NiCl2(4,4’-bpz)]n (7), [CuCl(4,4’-bpz)]n (8):4,4’-bpz and Zn(Ⅱ), Cu(Ⅱ), Ni(Ⅱ) were employed to synthesize metal-organic frameworks.6 is a 2D framework.7 is a 2D framework.8 is a 3D framework.