Luminescence Properties of Europium and Terbium Complexes with Pyridine or Bipyridine Linked Oligothiophene Ligand
With an aim to develop novel luminescence mterials, europium and terbium complexes of 2, 5-(2-thiophene)- pyridine (TPY), 5, 5-his (5-(2, 2-bithiophene))-2, 5-pyridine (B2TPY) and 5, 5-bis (5-(2, 2- bithiophene))-2, 2-bi-pyridine (B2TBPY) were synthesized, and their luminescence properties were studied. The complexes exhibited ligand- sensitized emission, which was typical of Eu (Ⅲ) and Tb (Ⅲ) ions. The excitation spectra of Eu (Ⅲ) and Tb (Ⅲ) complexes with TPY (or B2TPY or B2TBPY) show similar bands as these with the ligands. It suggests that, the excitation energy is absorbed by TPY or B2TPY or B2TBPY, the energy transfers from its excited single state to its triplet state, and finally transfers from the ligands to Eu (Ⅲ) and Tb (Ⅲ) ions. The luminescence of Eu (Ⅲ) and Tb (Ⅲ) ions in the TPY or B2TPY or B2TBPY complexes indicates that the metal ions are efficiently excited by the absorbed energy from excitation of the ligands.
pyridine bipyridine oligothiophene Eu, Tb complex rare earths
Liu Ping(刘平) Liang Lusheng(梁禄生) Hu Jianhua(胡建华) Zhang Yamin(张雅敏) Feng Guiju(冯桂菊) Deng Wenji(邓文基)
Research Institute of Materials Science Department of Applied Physics, South China University of Technology, Guangzhou 510640, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
355-357
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）