The Construction of Double Ligands Zn(Ⅱ)MOFs and Its Photoluminescence Properties

doi:10.7517/issn.1674-0475.190811

Abstract

Abstract: 2,5-dihydroxyterephthalic acid (H₄-DHBDC) and 4,4'-bipyridine (4,4'-Dipyridyl) as double ligands, Zn(NO₃)₂·6H₂O as a metal salt, the solvothermal method was adopted in a solvent system of water/DMF=3:2 (volume fraction) and a Zn(Ⅱ)MOFs material was constructed by solvothermal method at 120℃. Its composition was[Zn₂(H₂-DHBDC)(DHBDC)_0.5(4,4'-Dipyridyl)_1.5]_n. The crystal structure and properties were analyzed and characterized by X-ray single crystal diffraction(PXRD), infrared spectroscopy(FTIR), thermogravimetric analysis(TGA) and fluorescence spectrophotometry(FS). The results showed that the Zn(Ⅱ)MOFs material belongs to the monoclinic system, P2(1)/n space group, and has a three-dimensional network structure. The analysis of thermogravimetric and fluorescence show that the Zn(Ⅱ)MOFs material has good thermodynamic stability and photoluminescence property.

Key words: double ligands, Zn(Ⅱ)-organic framework, crystal structure, thermal stability, photoluminescence

CLC Number:

ZHU Wenqing, FAN Pan, LI Yang, ZHU Yumeng, ZHANG Jin. The Construction of Double Ligands Zn(Ⅱ)MOFs and Its Photoluminescence Properties[J]. Imaging Science and Photochemistry, 2020, 38(2): 159-166.

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