摘要
通过水热法合成了一种结构稳定的金属有机框架化合物{[Ca(atba)_4·2H_2O]·H_2O}_n(H_4atba=偶氮苯-3,3',5,5'-四羧酸).运用X射线单晶衍射、红外谱图及X射线粉末衍射对其进行了结构表征.晶体结构测试表明该配合物通过{Ca_2(CO_2)_2}结构单元形成了一维链状结构,继而通过配体之间的连接形成二维层状结构,进一步通过共价键构筑成三维结构.荧光光谱分析表明,标题化合物对L-组氨酸具有选择性识别作用.
A sable metal-organic framework of Ca (Ⅱ), namely, {[Ca( atba)4·2H2O]·H2O}n(H4atba = azoxybenzene-3,3′,5,5′-tetracarboxyic acid) has been synthesized under solvothermal con-ditions. The complex was characterized by single crystal X-ray analysis, IR spectroscopy and X-raypowder diffraction. Structural determination shows that the complex presents a 1D ( one-dimensional)uniform Ca-carboxylate chain based on the building unit of {Ca2(CO2)2}, thereafter, the 1D chainsare connected to form a 2D (two-dimensional) layered structure by ligands. These 2D layers are furtherlinked into 3D (three-dimensional) network via covalent bonding. Luminescent properties of the complex have been studied at ambient temperature. The complex shows selective response to L-Histidine,suggesting that it may be promising luminescent selective recognition sensor for L-Histidine.
出处
《化学研究》
CAS
2017年第5期548-555,共8页
Chemical Research
基金
financially supported by the Natural Science Foundation of Henan Province of China(Nos.162300410010and 13A150056)
关键词
金属-有机框架物
水热合成
结构表征
荧光识别
metal-organic framework
hydrothermal synthesis
structural characterization
luminescentproperty