Acta Chimica Sinica ›› 2012, Vol. 0 ›› Issue (05): 679-682 .DOI: 10.6023/A1107192 Previous Articles    



张尽力, 赵利平, 罗炫, 杜凯   

  1. 中国工程物理研究院激光聚变研究中心 绵阳 621900
  • 投稿日期:2011-07-19 修回日期:2011-09-22 发布日期:2011-11-29
  • 通讯作者: 杜凯
  • 基金资助:

    国家高技术发展基金(No. 2011AA8043021)资助项目.

Synthesis and Spectra Analyses of Eu(III) Binary Complexes with Polycarboxylic Acid

Zhang Jinli, Zhao Liping, Luo Xuan, Du Kai   

  1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900
  • Received:2011-07-19 Revised:2011-09-22 Published:2011-11-29
  • Supported by:

    Project was supported by the National High Technology Development Program of China (No. 2011AA8043021).

Using trimesic acid, mellitic acid and 1,2,3,4,5,6-cyclohexanehexacarboxylic acid as ligand, three Eu(III) binary complexes, Eu(BTC)·2H2O, Eu2(MTA)·4H2O and Eu2(CCA)·4H2O were synthesized. Their chemical compositions were characterized by elemental analyses, IR and inductively coupled plasma atomic emission spectrometer (ICP) techniques, and the results showed an agreement with the proposed structures. The photophysical properties (excitation spectra, emission spectra, emission lifetime, emission quantum yield) were investigated by using luminescence spectroscopy at room temperature. The results showed that all the three complexes exhibit strong red fluorescence under ultraviolet light and the photoluminescence properties of Eu2(MTA)·4H2O (emission quantum yield=10.25%, emission lifetime= 0.36 ms) was superior to the others. The phenomenon was interpreted by electron-effect and energymatching mechanism. Additionally, the thermal stability of the Eu(III) binary complexes was studied, and the main decomposition points of the complexes were higher than other β-diketonate complexes.

Key words: rare earth, Eu(III) complex, photoluminescence