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摘要
采用柱支撑策略,以刚性含苯环芳香族羧酸作为配体,以2,5-二(4-吡啶基)-1,4-二甲苯为辅助配体,N,N-二甲基甲酰胺(DMF)为溶剂,利用溶剂热法,合成一种新型Zn金属有机骨架材料,并通过X单晶衍射和热重分析等手段对其结构与性能进行了表征。X单晶衍射表明合成的新型金属有机骨架材料为三维结构,此种金属有机骨架材料的组成为Zn(L1)2L2,主配体和辅助配体均与金属配位,证明柱支撑策略有效。并且此种金属有机骨架材料的晶体形态呈现为空心的管状结构,具有良好的热力学稳定性。
Abstract
A novel Zn-metal organic frameworks (MOFS) was afforded through solvothermal method by using column support strategy.In the framework,rigid benzene ring-containing aromatic carboxylic acid used as ligand,2,5-bis(4-pyridyl)-1,4-xylene as auxiliary ligand and N,N-dimethylformamide (DMF) as the solvent.The structure and property were characterized and determined by single-crystal X-ray diffraction and thermogravimetric analysis.The MOFS belonged to Zn(L1)2L2 with 3D structure.Moreover,the ligand and auxiliary ligand were both coordinated to central Zn atom effectively due to column supports strategy.The oxygen atoms of ligand were protonated and coordinated to the central Zn ion,giving an infinite 2D network structure.Furthermore,the 3D skeleton structure was obtained from 2D network via the coordination of 2,5-bis(4-pyridyl)-1,4-xylene to Zn ions.The framework had extraordinary hollow tubular structure.Researches on this type of crystal were seldom reported.Only MOFS ThazheKootteriPrasad et al.reported the similar single crystal supported by alkoxy-substituted terphenyl ligand.In addition,the Zn-MOFS had good thermal stability.
关键词
Zn金属
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羧酸配体
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金属-有机框架材料
Key words
Zn metal
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carboxylic acid ligand
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metal-organic frameworks
新型Zn金属有机骨架材料的合成与表征[J].
化工新型材料, 2022, 50(9): 164-167 DOI:10.19817/j.cnki.issn1006-3536.2022.09.033
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