应用化学 ›› 2018, Vol. 35 ›› Issue (1): 82-88.DOI: 10.11944/j.issn.1000-0518.2018.01.170336

• 研究论文 • 上一篇    下一篇

咪唑二羧酸构筑的铕配合物的合成、晶体结构及发光性能

林肖漪a,朱永朝b,孟祥茹b*()   

  1. a南阳市第一中学 南阳 473000
    b郑州大学化学与分子工程学院 郑州 450001
  • 收稿日期:2017-09-14 接受日期:2017-12-12 出版日期:2018-01-03 发布日期:2018-01-03
  • 通讯作者: 孟祥茹
  • 基金资助:
    国家自然科学基金(J1210060)河南省科技攻关项目(172102210128)资助

Synthesis, Crystal Structure and Luminescent Properties of a Europium Complex from Imidazole Dicarboxylate

LIN Xiaoyia,ZHU Yongchaob,MENG Xiangrub*()   

  1. aNo.1 Middle School of Nanyang,Nanyang,He'nan 473009,China
    bCollege of Chemistry and Molecular Engineering,Zhengzhou University,Zhengzhou 450001,China
  • Received:2017-09-14 Accepted:2017-12-12 Published:2018-01-03 Online:2018-01-03
  • Contact: MENG Xiangru
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.J1210060), the He'nan Science and Technology Project(No.172102210128)

摘要:

2-(邻溴)苯基-4,5-咪唑二羧酸(o-BrPhH3IDC)与六水合硝酸铕(Eu(NO3)3·6H2O)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(H3O)[Eu(o-BrPhH2IDC)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。

关键词: Eu-配合物, 咪唑二羧酸, 晶体结构, 荧光性能

Abstract:

By solvothermal reaction of Eu(NO3)3 6H2O with 2-(2-bromophenyl)-1H-imidazole-4,5-dicarboxylic acid (o-BrPhH3IDC) in the presence of terephthalic acid, a three-dimensional supramolecular complex (H3O)[Eu(o-BrPhH2IDC)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, I-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.

Key words: Eu-complex, imidazole dicarboxylate, crystal structure, fluorescence properties