Preparation and Fluorescence Properties of a Zinc-Based Luminescent Metal-Organic Framework(Zn-MOF)
With the development of materials technology,traditional inorganic and organic luminescent ma-terials have been extensively explored and realized for their diverse functionalities and applications in our daily life.Metal-organic frameworks(MOFs)are a new class of porous crystalline materials constructed from organic ligands and metal ions/clusters through coordination bonds.MOFs,the new type of organic-inorganic hybrid ma-terials is certainly very promising as a multi-functional luminescent material.Nonluminescent Zn-BDC was syn-thesized by the reaction of Zn2+with 1,4-dicarboxybenzene.In order to obtain fluorescent materials,this experi-ment selected Zn2+as the representative transition metal ion with electronic configuration d10 and two organic car-boxylic acid ligands:1,4-dicarboxybenzene and p-(4-phenylpyridinyl)methylbenzoic acid to synthesize Zn-MOF materials with fluorescent properties.Due to the coordination of p-(4-phenylpyridinyl)methylbenzoic acid,Zn-MOF exhibited luminescent properties.The fluorescence spectrum results of the material shows that under excita-tion at a wavelength of 350 nm,the material had a strong emission peak at 411 nm.Under UV(λ=365 nm)lamp at normal temperature and pressure,Zn-BDC was a nonluminescent MOF,while Zn-MOF revealed a crys-talline blue luminescent material,which mainly comes from the transition from ligand to ligand.And an appropri-ate design strategy direction for the effective exploration of new Luminescent MOF materials is proposed.
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