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以稀土氯化物、3-己烯二酸与1,10-邻菲咯啉为原料,在乙醇溶液中合成了稀土(Sm3+、Eu3+、Tb3+、Dy3+)的三元配合物,通过元素分析,EDTA配位滴定分析、红外光谱测定,确定了其组成为RE2L3Phen.4H2O(RE=Eu3+、Tb3+、Sm3+、Dy3+,H2L=3-己烯二酸,Phen=1,10-邻菲咯啉).通过荧光光谱,测定了配合物的发光性能.荧光光谱测定结果表明,只有稀土Eu3+,Tb3+的三元配合物能发出强的特征荧光,表明这两个配合物中的配体能级与Eu3+,Tb3+离子很好匹配,能有效地将吸收的能量传递给稀土离子,并敏化稀土离子发光.
Ternary complexes of rare earth (Sm3 +, Eu3 +, Tb3 +, Dy3 +) were synthesized from ethanol, using rare earth chloride, 3-hexenedioic acid and 1,10-phenanthroline as raw materials. Coordination titration analysis and FTIR spectroscopy showed that the composition is RE2L3Phen.4H2O (RE = Eu3 +, Tb3 +, Sm3 +, Dy3 +, H2L = 3-hexenedioic acid, Phen = Fluorescence spectroscopy was used to determine the luminescent properties of the complexes.The results of fluorescence spectroscopy showed that only ternary complexes of rare earth Eu3 + and Tb3 + could emit strong characteristic fluorescence, which indicated that the energy levels of the ligands in the two complexes were close to those of Eu3 +, Tb3 + The ions are well matched and can effectively transfer the absorbed energy to the rare earth ions and sensitize the rare earth ions to emit light.