2-甲基-8-羟基喹啉镓配合物的合成及发光性能研究  

Synthesis and photoluminescent characteristics of 8-hydroxy-2-methylquinoline gallium

作　　者：孙春燕[1,2] 刘旭光[1,2] 陶鹏[1,3] 陈柳青[1,3] 

机构地区：[1]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024 [2]太原理工大学化学化工学院,山西太原030024 [3]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《功能材料》2013年第4期540-543,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21176169;21071108;60976018;21101111);长江学者与创新团队发展计划资助项目(IRT0972);国家国际合作专项资助项目(2012DFR50460);国家教育部博士点基金资助项目(20101402110007);山西省自然科学基金资助项目(2010021023-2;2011021022-2);山西省科技攻关资助项目(20120321019)

摘　　要：合成了2-甲基-8-羟基喹啉镓配合物(Ga(mhq)3),通过红外光谱、氢核磁谱确认其结构,进一步通过紫外-可见吸收光谱、循环伏安曲线、荧光发射光谱和电致发光光谱表征了其光学带隙及发光性质。实验结果表明Ga(mhq)3紫外吸收峰在259和365nm处,由紫外吸收得到光学带隙为3.10eV。在四氢呋喃溶液中,416nm激发下,荧光发射峰在496nm,为蓝绿色荧光;在360nm波长的激发下,Ga(mhq)3粉末发射峰在472nm处,属蓝绿光发射。将其做成器件A:ITO/NPB(50nm)/Ga(mhq)3(30nm)/LiF(1nm)/Al(100nm),得到最大亮度为901.5cd/m2,最大发射波长为508nm。加入电子传输层Alq3对器件A进行优化后,最大亮度达到4339cd/m2。8-Hydroxy-2-methylquinoline gallium（Ga（mhq）3） was synthesized,and its molecular structure was characterized by FT-IR spectrometry and 1H NMR techniques.Its optical gap and photocurrent properties were investigated by UV-Vis absorption spectrometry,cyclic voltammetry,fluorescent emission spectrometry and electroluminescent spectrometry.Experimental results show that its optical gap is about 3.10 eV,as determined from its UV-Vis absorption edge.Its UV absorption bands were at 259 and 365 nm.Ga（mhq）3 emitted intensive blue-green fluorescence at peak wavelength of 496 and 472 nm in THF solution and powder state,respectively.Finally,devices using Ga（mhq）3 as the emissive layer were fabricated and investigated.The device A with configuration of ITO/NPB（50nm）/Ga（mhq）3（30nm）/LiF（1nm）/Al（100nm） showed maximum emission peak at 508nm and the maximum brightness of 901.5 cd/m2,after optimization by introducing electron-transporting material Alq3,brightness can reach 4339cd/m2.

关 键 词：8-羟基喹啉 光电特性 光学带隙 

分 类 号：O626.32[理学—有机化学]