含有不同结构第二配体的铕(Ⅲ)三元有机配合物的合成与发光  

Synthesis and Photoluminescence of Three Eu(Ⅲ) Ternary Complexes with New Secondary Ligands with Different Structure

作　　者：袁继兵[1] 李嘉航[1] 梁万里[2] 苏树江[3] 石建新[1] 龚孟濂[1] 

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,广东广州510275 [2]香港浸会大学化学系 [3]香港浸会大学物理系

出　　处：《中国稀土学报》2004年第5期600-604,共5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3种新的1,10 菲罗啉的衍生物:二吡啶[3,2 f:2′,3′ h]喹喔啉(DPQN),咪唑并[5,6 f]邻菲罗啉(IP)和苯基咪唑并[5,6 f]邻菲罗啉(PIP),以它们作为第二配体,并以二苯甲酰甲烷(DBM)为第一配体,合成了3种新的铕(Ⅲ)三元有机配合物。通过元素分析、红外光谱、1H 核磁共振光谱确定了它们的组成,研究了3种配合物的热稳定性、成膜性能和光致发光性能(发光强度,荧光量子效率和寿命),并初步从理论上探讨了含有不同结构的第二配体对铕(Ⅲ)配合物发光的影响,为筛选有机电致发光新材料提供了认识基础。Three new 1,10-phenanthroline derivatives, dipyrido (3,2-f:2,3-h) quinoxaline (DPQN), imidazo -(1, 10)phenanthroline (IP) and 3-phenyl-imidazo -(1, 10) phenanthroline (PIP) were designed and synthesized as a secondary ligand to coordinate with europium (Ⅲ) ion while dibenzoylmethane (DBM) was used as the first ligand. The compositions of the ligands and the europium (Ⅲ) ternary complexes were confirmed by elementary analysis, IR and (()~1H-)NMR spectroscopy. The UV-visible absorption spectra, thermal stability, photoluminescence spectra, quantum yield and fluorescence life time of the Eu(Ⅲ) complexes were investigated. The effect of the structure of the secondary ligand on the photoluminescence of the complexes was discussed. The results show that the synthesized Eu(Ⅲ) complexes are good red-emitting materials for potential application in fabrication of organic electroluminescence devices.

关 键 词：发光材料 光致发光 第二配体 铕三元配合物 稀土 

分 类 号：O614.33[理学—无机化学] O482.31[理学—化学]