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通过溶剂热合成了一个新的由2-羟基-6-甲基-异烟酸和草酸混合配体构筑的镝有机框架化合物,化学式为{[Dy(μ2-H2minca)(μ2-C2O4)·2H2O]·H2O}n,(其中,H3minca代表2-羟基-6-甲基-异烟酸).标题化合物呈现复杂的二维(2D)瓦楞状网络63拓扑结构,其中{DyO8}多面体是通过苯羧酸上的羧基和草酸联成片状结构.光致发光研究表明,标题化合物在可见光区域发射出Dy的特征f-f跃迁荧光光谱.热重和差热分析表明,该化合物具有较高的热稳定性.变温磁化率测量表明,相邻镝(Ⅲ)中心之间有可能存在弱的铁磁相互作用.
A new dysprosium organic framework composed of 2-hydroxy-6-methyl-isonicotinic acid and oxalic acid was synthesized by solvothermal method. The chemical formula was Dy [μ 2 -H 2minca] (μ 2 -C 2 O 4) · 2H 2 O ] · H2O} n, wherein H3minca stands for 2-hydroxy-6-methyl-isonicotinic acid The title compound presents a complex two-dimensional (2D) corrugated network 63 topology in which the {DyO8} The carboxylic acid and oxalic acid form a sheetlike structure on the carboxylic acid.The photoluminescence study showed that the title compound emitted the characteristic ff transition fluorescence spectrum of Dy in the visible region.The thermogravimetry and differential thermal analysis showed that the compound has high thermal stability The change of temperature magnetic susceptibility shows that there may be weak ferromagnetic interaction between adjacent dysprosium (Ⅲ) centers.