二苯乙烯腈衍生物发光材料的合成及性能  

Synthesis and characterization of cyanostilbene-based luminescent material and its performance

作　　者：欧阳密[1] 吴启超[1] 孙璟玮[1] 李洪飞[1] 张诚[1] 

机构地区：[1]浙江工业大学化学工程学院,浙江杭州310014

出　　处：《浙江工业大学学报》2014年第5期478-482,共5页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(51203138;51273179));国家国际科技合作专项项目(2012DFA51210)

摘　　要：合成了一种新型二苯乙烯腈衍生物发光小分子PH-CN.通过紫外-可见光谱和荧光光谱表征了其在溶液中和固态薄膜下的光学性质,该物质在薄膜状态下的发射峰位于497nm,属于一种绿色发光材料.通过差示扫描量热法和循环伏安法研究其热稳定性和电化学性能,测得PH-CN的玻璃化转变温度为213℃,计算出最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)的能级分别为-5.7eV和-3.5eV.在此基础上制备了基于PH-CN掺杂薄膜的多层发光器件ITO/PEDOT:PSS(40nm)/NPB(30nm)/CBP:5%PH-CN(20nm)/TPBI(40nm)/LiF(0.5nm)/Al(100nm),其外量子效率达到了1.02%,色坐标为(0.20,0.40).基于PH-CN的电致发光器件的结果在显示器方面具有潜在的应用价值.A novel cyanostilbene-based luminescent material PH-CN has been synthesized and characterized.The optical properties in solution and in the film state were investigated via UV-visible spectrum and photoluminescence spectrum.The PL emission maximum of PH-CN in film state was located at 497 nm.The thermal stability and electrochemical property of as-prepared samples were studied by differential scanning calorimetry and cyclic voltammetry respectively.The glass transition temperature of PH-CN was measured at 213 ℃,and the HOMO and LUMO levels were estimated at-5.7 eV and-3.5 eV respectively.Multi-layer OLEDs with the structures of ITO/PEDOT：PSS/NPB/CBP：5％ PH-CN/TPBI/LiF/Al were fabricated.The device exhibited an external quantum efficiency of 1.02％ with color coordinates of （0.20,0.40）,showing its potential applications on the display.

关 键 词：二苯乙烯腈 有机电致发光 掺杂 

分 类 号：O625.63[理学—有机化学]