摘要
合成了一类组成为犤(n-C4H9)4N犦犤EuxM1-x(TTA)4犦(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.
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=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.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2002年第5期468-472,共5页
Acta Physico-Chimica Sinica
基金
国家重点基础研究发展规划(G1998061311)
国家自然科学基金(200230005)
"政"基金资助项目
