物理化学学报 >> 2002, Vol. 18 >> Issue (05): 468-472.doi: 10.3866/PKU.WHXB20020518

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[(n-C4H9)4N][EuxM1-x(TTA)4](M=La、Sm、Gd、Tb)的光致发光

刘铭钊;杨展澜;张莉;翁诗甫;吴瑾光   

  1. 北京大学化学与分子工程学院,稀土材料化学及应用国家重点实验室,北京 100871
  • 收稿日期:2001-09-21 修回日期:2001-12-24 发布日期:2002-05-15
  • 通讯作者: 杨展澜 E-mail:yzl@chem.pku.edu.cn

Photoluminescence of [(n-C4H9)4N][EuxM1-x(TTA)4]

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,College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
  • Received:2001-09-21 Revised:2001-12-24 Published:2002-05-15
  • Contact: Yang Zhan-Lan; E-mail:yzl@chem.pku.edu.cn

摘要: 合成了一类组成为[(nC4H9)4N][EuxM1-x(TTA)4] (M=La、Sm、Gd、Tb)的固体配合物,通过测定其红外光谱,X射线粉末衍射谱和荧光光谱,研究了配合物结构和发光性质随Eu3+浓度变化的规律.红外光谱和XRD谱的分析结果表明,在体系中没有新化合物生成.而荧光光谱分析结果表明发光强度与Eu3+浓度不成线性关系,不发光的基质配合物组分对发光有不同大小和不同类型的影响.提出一种可能的发光机制解释这一共发光现象.

关键词: 稀土配合物, 光致发光, 荧光光谱, 能量传递机理

Abstract: A series of [(nC4H9)4N][EuxM1-x (TTA)4](M=La, Sm,Gd, Tb) dopedcomplexes were synthesized. The results of FTIR and XRD spectroscopies indicated that the structures of the doped complexes are as same as that of pure complexes [(nC4H9)4N][Ln(TTA)4](Ln=Eu, La, Sm, Gd, Tb). It is found that the luminescent intensity of the dopedcomplexes did not have a linear relation with amount of Eu3+. Addition of La3+, Gd3+ and Tb3+ increased the luminescence of Eu3+ in varying degrees, and addition of Sm3+ decreased the luminescence of Eu3+. The possible intermolecular energy transfer mechanism by triplet states of ligands was discussed.

Key words: Photoluminescence, Rare earth complexes, Luminescence spectroscopy, Energy transfer mechanism