配合物EuxM1-x(TTA)3(H2O)2(M=La,Gd)光致发光特性

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.

Photoluminescence of Solid Complexes Eu xM1 - x(TTA)3 (H2O)2 (M = La, Gd)

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.