新型β-二酮配体及其Eu(Ⅲ)三元配合物的合成、表征及发光性能的研究  

Synthesis,Characterization and Luminescence Properties of Novel β-Diketone and Eu(Ⅲ) Ternary Complex

作　　者：程果[1] 魏长平[1] 任晓明[1] 王贺[1] 魏文涛[1] 

机构地区：[1]长春理工大学化学与环境工程学院,吉林长春130022

出　　处：《光谱学与光谱分析》2011年第9期2346-2349,共4页Spectroscopy and Spectral Analysis

基　　金：吉林省教育厅"十一五"科技项目(201028);教育部科学技术研究重点项目(204038)资助

摘　　要：采用Claisen缩合反应合成了一种新型的β-二酮化合物1-(4-溴苯)-3-苯基丙烷-1,3-二酮(L),并以其为第一配体,邻菲罗啉(Phen)为第二配体,合成出新型稀土Eu(Ⅲ)三元配合物。通过元素分析、红外光谱、紫外光谱、荧光光谱对合成的配体及三元配合物进行了表征。红外光谱的分析表明:配体L含有β-二酮结构,且烯醇式含量高;配合物中L的氧原子以及Phen中的氮原子与稀土离子进行了配位。紫外光谱的分析表明配合物中的能量传递主要来自第一配体。通过荧光光谱研究了配合物的发光性质,结果显示配合物表现出Eu3+的特征发射,主发射峰为Eu3+的5D0→7F2发射,属于窄带发射,单色性较好,是具有潜在应用价值的红色发光材料。The novel β-diketone 1-（4-bromophenyl）-3-phenylpropane-1,3-dione （L） was synthesized at room temperature by classical Claisen condensation reaction. With the β-diketone L as the first ligand and phen as the secondary ligand, and a new rare-earth Eu （ Ⅲ） ternary complex was prepared. The ligand L and ternary complex were characterized by elemental analysis, IR spectra, UV spectra and fluorescence spectra. IR spectra indicated that： the novel ligand L contained the structure of β-dike- tone, where the content of enol was high; the Eu3＋ ion in the ternary complex was coordinated with six oxygen atoms of three L ligands and two nitrogen atoms of the second ligand phen. UV spectra showed that the main absorption was from the first ligand L in the Eu （ Ⅲ） ternary complex. The excitation and emission spectra of the ternary complex were measured and investigated. Fluorescence spectra demonstrated that the ternary complex could emit characteristic fluorescence of rare earth Eu3＋ ion and the strongest emission band was narrow which was attributed to the S D0→7 F2 transitions of the 4f electrons of the central Eua＋ ions. So, the new Eu（ Ⅲ ） ternary complex is an excellent red-emitter which would be regarded as a valuable material with bright red fluorescence because it presents good monochromaticity.

关 键 词：铕 Β-二酮 合成 三元配合物 发光性能 

分 类 号：O482.3[理学—固体物理]