双配体Zn(Ⅱ)MOFs材料的构筑及光致发光性能

doi:10.7517/issn.1674-0475.190811

摘要/Abstract

摘要： 以2，5-二羟基对苯二甲酸（H₄-DHBDC）和4，4'-联吡啶（4，4'-Dipyridyl）为双配体、Zn（NO₃）₂·6H₂O为金属盐，在水/DMF=3：2（体积比）的溶剂体系中，采用溶剂热法，在120℃时构筑了一种组成为[Zn₂（H₂-DHBDC）（DHBDC）_0.5（4，4'-Dipyridyl）_1.5]_n的Zn（Ⅱ）MOFs材料。利用X-射线单晶衍射（PXRD）、红外光谱（FTIR）、热重分析（TGA）和荧光分光光度法（FS）等，对其晶体结构和性质进行了分析与表征。结果表明，Zn（Ⅱ）MOFs材料属于单斜晶系，P2（1）/n空间群，且具有三维网状结构。热重分析和荧光分析表明，Zn（Ⅱ）MOFs材料具有良好的热力学稳定性和光致发光性能。

关键词: 双配体, Zn(Ⅱ)MOFs材料, 晶体结构, 热稳定性, 光致发光性能

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

中图分类号:

朱文庆, 樊盼, 李扬, 朱玉梦, 张瑾. 双配体Zn(Ⅱ)MOFs材料的构筑及光致发光性能[J]. 影像科学与光化学, 2020, 38(2): 159-166.

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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