两种新型双极有机小分子发光材料的合成与发光  

Synthesis and Photoluminescence of Two Novel Bipolar Organic Compounds

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

机构地区：[1]中山大学化学与化学工程学院光电材料与技术国家重点实验室,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：《化学学报》2006年第11期1157-1162,共6页Acta Chimica Sinica

基　　金：广东省科技计划(No.B10502)资助项目.

摘　　要：设计和合成了两种新的具有“双极(bipolar)”性质和发光性能的有机小分子化合物N-[4-(5-(2-苯基喹啉-4)-1,3,4-噁二唑-2)苯基]-N'-苯基-N,N'-二苯基-1,1'-联苯基-4,4'-二胺(TPDOPQ)和N,N'-双{4-[5-(2-苯基喹啉-4-基)-1,3,4-噁二唑-2]苯基}-N,N'-二苯基-1,1'-联苯基-4,4'-二胺[TPD(OPQ)2].用1HNMR,MS和元素分析进行了表征,研究了化合物的热稳定性和光致发光性质,并用循环伏安法测定了其电化学性能.结果表明,这两种合成的有机化合物同时具备空穴传导和电子输入双重功能,光致发光性能优良,热稳定性好,能形成均衡薄膜,因此可作为制作有机电致发光器件的候选材料.Two novel organic compounds substituted with hole transporting arylamine and electron transporting 1,3,4-oxadiazole moieties have been designed and synthesized using a facile multistep reactions with high yield. The compounds are N- { 4- [5-（2-phenylquinolin-4-yl）- 1,3,4-oxadiazol-2-yl]-phenyl }-N＇-phenyl- N,N＇diphenyl- 1, l＇-biphenyl-4,4＇-diamine （TPDOPQ） and N,N＇-bis { 4-[5-（2-phenylquinolin-4-yl）- 1,3,4- oxadiazol-2-yl]-phenyl}-N,N＇-diphenyl-l,l＇-diphenyl-4,4＇-diamine [TPD（OPQ）2]. These compounds emit intensive green light with high fluorescence quantum yields of 33%-48% under 450 nm light excitation. Cyclic voltammetry measurement results imply that these two compounds have both good hole-transporting and good electron-transporting properties, and hole-transporting is predominant. TG analysis showed high thermal stability of the compounds and vacuum-coating experiments confirmed the formation of homologous films from these compounds. All the results indicate that the synthesized compounds are potentially good candidates as bipolar （hole-transporting/electron-transporting） and emitting materials for fabrication of organic light-emitting diodes.

关 键 词：有机小分子 空穴传导 电子传导 发光 

分 类 号：O626[理学—有机化学]