摘要
利用2-羟基-3-甲氧基苯甲酸(H_(2)MBA)作为配体,在水热条件下与硝酸铕反应,合成了一维Eu(Ⅲ)配合物{NH_(4)·[Eu(HMBA)_(4)]}n。对合成的配合物进行单晶X射线衍射、元素分析、红外光谱、粉末X射线衍射、热重和荧光光谱测试。单晶X射线衍射结果表明:配合物为正交晶系,空间群为Pnna,八个配位氧在Eu(Ⅲ)周围形成一个四方反棱柱配位环境。配合物呈现一维之字链型,在氢键的作用下组装成三维超分子结构。荧光光谱分析发现配合物用394nm紫外光激发有特征荧光,表明H2MBA配体能较好的敏化Eu^(3+)发射特征荧光。
One-dimensional Eu(Ⅲ) complex {NH_(4)·[Eu(HMBA)_(4)]} was synthesized using 2-hydroxy-3-methoxybenzoic acid(H2MBA) as a ligand and reacted with Eu(NO_(3))3·6H_(2)O under hydrothermal condition. The complex was tested by single crystal X-ray diffraction, elemental analysis, infrared spectroscopy, powder X-ray diffraction, thermogravimetric and fluorescence spectroscopy. The single crystal X-ray diffraction result showed that the complex was orthorhombic, the space group was Pnna, the eight coordinated oxygens formed a tetragonal antiprism coordination environment around Eu(Ⅲ). The complex exhibited a one-dimensional zigzag chain, which was assembled into a three-dimensional supramolecular structure under the action of hydrogen bonds. Fluorescence spectrum analysis found that the complex had characteristic fluorescence under the excitation of 394 nm ultraviolet light, indicating that H2MBA ligand can better sensitize Eu^(3+) to emit characteristic fluorescence.
作者
钟丽
秦臻
莫江敏
ZHONG Li;QIN Zhen;MO Jiang-min(Guangxi Modern Polytechnic College,Guangxi Hechi 547000,China)
出处
《广州化工》
CAS
2022年第24期71-74,共4页
GuangZhou Chemical Industry
基金
广西现代职业技术学院科研项目(GXXDYB2020454f)。
