新的β-二酮及其Eu(Ⅲ)三元配合物的合成与发光研究  

Preparation and Photoluminescence of a Novel β-Diketone Ligand and Its Europium (Ⅲ ) Ternary Complex

作　　者：向能军[1] 李狄豪[2] 王芸芸[3] 龚孟濂[3] 梁万里[2] 石建新[3] 

机构地区：[1]中山大学光电材料与技术国家重点实验室化学与化学工程学院广州510275香港浸会大学化学系香港 [2]香港浸会大学化学系 [3]中山大学光电材料与技术国家重点实验室化学与化学工程学院

出　　处：《中国稀土学报》2004年第6期871-874,共4页Journal of the Chinese Society of Rare Earths

基　　金：广东省科技计划资助项目(B10502)

摘　　要：合成了一种新的β 二酮,4 甲氧基联苯甲酰三氟丙酮(1 (4′ meothoxybiphenyl 4yl ) 4,4,4, trifluoro butane 1,3 dione,MBPTFA),以元素分析和1H NMR谱确定了其组成;进而以MBPTFA作第一配体和邻菲罗啉(1,10 phenanthroline,Phen)为第二配体,与EuCl3反应,合成了一种三元配合,Eu(MBPTFA)3Phen。用元素分析、红外、紫外 可见吸收光谱和荧光光谱进行了表征。荧光分析结果表明:配体本身是一种良好的蓝色发光材料;配合物中的有机配体能够有效地的把吸收的能量传递给中心Eu3+离子,强烈敏化Eu3+发光,且发射谱线很窄,主发射峰为Eu3+的5D0-7F2发射。这对寻找新型稀土配合物发光材料和制备有机电郅发光器件具有一定的价值。A novel β-diketone, 1-(4′-methoxybiphenyl-4yl-)-4,4,4,-trifluoro-butane-1,3-dione (MBPTFA), was prepared with high yield. With this synthesized ligand as the first ligand and 1, 10-phenanthroline (Phen) as the secondary ligand, europium (Ⅲ) ternary complex, Eu(MBPTFA)_3Phen, was synthesized. The composition of the new β-diketone was confirmed by elemental analysis and (()~1H-NMR) spectroscopy. The properties of the Eu(Ⅲ) ternary complex were characterized by elemental analysis, IR and UV-Visible spectroscopies. Photoluminescence measurements indicate that MBPTFA itself is a blue emitter under UV radiation while the effective energy-transfer from the organic ligands to the central Eu^(3+) ions occurs in the ternary complex, and strong and characteristic red-orange emission appears due to the (()~5D_0-()~7F_j) transitions of the 4f electrons of the central Eu^(3+) ions. The synthesized Eu(Ⅲ) ternary complex is an excellent red-emitter with an electron-transporting group, and would be considered as a candidate material for fabrication of organic light-emitting devices (OLEDs).

关 键 词：Eu(Ⅲ) Β-二酮 三元配合物 发光 电子传导 稀土 

分 类 号：O614.33[理学—无机化学] O641.4[理学—化学]