物理化学学报 >> 2001, Vol. 17 >> Issue (09): 797-801.doi: 10.3866/PKU.WHXB20010907

研究论文 上一篇    下一篇

配合物EuxM1-x(TTA)3(H2O)2(M=La,Gd)光致发光特性

刘铭钊;杨展澜;张莉;翁诗甫;吴瑾光   

  1. 稀土材料化学及应用国家重点实验室,北京大学化学学院,北京 100871
  • 收稿日期:2001-02-12 修回日期:2001-04-20 发布日期:2001-09-15
  • 通讯作者: 吴瑾光

Photoluminescence of Solid Complexes EuxM1-x(TTA)3 (H2O)2 (M=La,Gd)

Liu Ming-Zhao;Yang Zhan-Lan;Zhang Li;Weng Shi-Fu;Wu Jin-Guang   

  1. State Key Laboratory of Rare Earth Material Chemistry and Applications,Chemistry College,Peking University,Beijing 100871
  • Received:2001-02-12 Revised:2001-04-20 Published:2001-09-15
  • Contact: Wu Jin-Guang

摘要: 合成了一系列组成为EuxM1-x(TTA)3(H2O)2(M=La,Gd)的固体配合物,利用红外光谱和荧光光谱研究了配合物结构和发光性质随Eu3+浓度的变化规律.红外光谱的结果表明,配合物的成份为Eu(TTA)3(H2O)2和M(TTA)3(H2O)2,没有新化合物生成.而荧光光谱的结果显示配合物的发光强度与Eu3+浓度不成线性关系,其中不发光的M(TTA)3组分对发光有增益作用.对其可能的发光机制进行了探讨.

关键词: 光致发光, 配合物, 红外光谱, 荧光光谱, 能量传递

Abstract: A series of solid complexes EuxM1-x(TTA)3(H2O)2 (M=La,Gd) were synthesized.Their compositions were ensured by the ICP analysis.The FTIR spectroscopy showed that no new compound formed besides Eu (TTA)3(H2O)2 and M(TTA)3(H2O)2(M=La,Gd)(to see Table 3).The luminescence property of them was investigated by using luminescence spectroscopy.The results indicated that the luminescence intensity of the complexes did not have a linear relation with the concentration of Eu3+.Addition of M3+ (La3+ or Gd3+) enhanced the luminescence of Eu3+.Furthermore,the enhancement by Gd3+ is more remarkable than by La3+.The possible intermolecular energy transfer mechanism was discussed,which explained the phenomena very well.

Key words: Photoluminescence, Complexes, Infrared spectra, Luminescence spectra,  Energy transfer