摘要
2-(邻溴)苯基-4,5-咪唑二羧酸(o-Br Ph H_3IDC)与六水合硝酸铕(Eu(NO_3)_3·6H_2O)在对苯二甲酸存在下,在乙睛和水的混合溶剂中,通过溶剂热反应,合成了一个三维超分子配合物(H_3O)[Eu(o-Br Ph H_2IDC)_4](1)。采用单晶X射线衍射对配合物1的晶体结构进行了测试,结果表明,配合物1为立方晶系,I-43d空间群;中心铕离子处于一个八配位的体系中。对配合物1的固态荧光研究发现:在395 nm的激发波长下,标题配合物显示出特征的铕发射光谱。这说明所采用的有机配体具有良好的天线效应,对铕离子有很好的敏化效应。
By solvothermal reaction of Eu（NOa）36H2O with 2-（2-bromophenyl）-lH-imidazole-4,5- dicarboxylic acid （o-BrPhH3 IDC ） in the presence of terephthalic acid, a three-dimensional supramolecular complex （ H3O） [ Eu（o-BrPhH/IDC） 4 ]（1） was prepared. The crystal structure of complex 1 was determined by single crystal X-ray diffraction. The results show that complex 1 crystallizes in the cubic system, 1-43d space group, and the central europium ion is in a eight-coordinate system. The solid-state fluorescence of complex 1 reveals that complex 1 exhibits a characteristic europium emission spectra at the excitation wavelength of 395 nm which implies that the organic ligand has a good antenna effect and a good sensitization effect on europium ion.
出处
《应用化学》
CAS
CSCD
北大核心
2018年第1期82-88,共7页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金(J1210060)
河南省科技攻关项目(172102210128)资助~~
关键词
Eu-配合物
咪唑二羧酸
晶体结构
荧光性能
Eu-complex
imidazole dicarboxylate
crystal structure
fluorescence properties
