基于新型螺氧杂蒽主体的高效蓝色磷光有机发光二极管
One-Step Synthesized Novel Spiro[fluorene-9,9'-xanthene]-Based Materials as Highly Efficient Blue Phosphorescent Hosts in Organic Light-Emitting Devices
摘要
Abstract
We synthesized a series of novel spiro[fluorene-9,9'-xanthene] (SFX)-based host materials via a one-step palladium-catalyzed cross-coupling reaction.These materials have high triple energy levels and high yield,and thus can be used as hosts for blue phosphors.Blue phosphorescent organic light-emitting devices (PHOLEDs) with a bis(3,5-difluoro-2-(2-pyridyl)phenyl-(2-carboxypyri-dyl)iridium(lll) (Flrpic) emission were fabricated.Furthermore,we applied cohosts composed of one of the new synthesized materials and the hole transport material di-[4-(N,N-ditolyl-amino)-phenyl]cyclohexane (TAPC) to the blue PHOLEDs to successfully acquire efficient blue emissions.The SFX-based material provided efficient energy transfer while TAPC improved the mobility of the cohost as well as reduced the working voltage.Maximum current efflciencies of 22.56 and 25.93 cd· A-1 and the maximum brightnesses of 6421 and 6196 cd· m-2 were obtained for the PHOLEDs with TAPC:2-(9-phenyl-fluoren-9-yl)spiro[fluorene-9,9'-xanthene] (PF-SFX) and TAPC:2-(9-(4-(octyloxy)-phenyl)-9H-fluoren-9-yl)spiro[fluorene-9,9'-xanthene] (C8OPF-SFX) cohosts,respectively.The experimental results obtained for the four SFX-based host materials were enough to declare that SFX is an effective main unit that can be used to build efficient host materials for blue phosphors containing only C,H,and O basic elements.关键词
钯催化反应/一步法/双主体/高效/蓝光有机发光器件Key words
Palladium catalyzed reaction/One-step method/Cohost/High performance/Blue organic light-emitting device分类
化学化工引用本文复制引用
关玉巧,陶友田,陈淑芬,汪联辉,黄维,陈钢,宋娟,汪成新,钱妍,章琴,邓玲玲,冯增勤,尚文娟..基于新型螺氧杂蒽主体的高效蓝色磷光有机发光二极管[J].物理化学学报,2017,33(4):816-822,7.基金项目
The project was supported by the National Key Basic Research Program of China (973) (2015CB932202,2012CB933301),National Natural Science Foundation of China (61274065,51173081,61136003,BZ2010043,21373114,21573111,21003076,61505086,21304047),Science Fund for Distinguished Young Scholars of Jiangsu Province,China (BK20160039),Ministry of Education of China (IRT 1148),Natural Science Foundation of Jiangsu Province,China (BM2012010,B K20141424),Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions,China (YX030001),Ordinary University Graduate Student Practical Innovation Projects of Jiangsu Province,China (SJLX15_0390),Pandeng Project of Nanjing University of Posts and Telecommunications,China (NY214085),and Open Foundation from Jilin University,China (IOSKL2015KF32).国家重点基础研究发展规划项目(973) (2015CB932202,2012CB933301),国家自然科学基金(61274065,51173081,61136003,BZ2010043,21373114,21573111,21003076,6150508,21304047),江苏省杰出青年科学基金(BK20160039),教育部创新团队(IRT1148),江苏省自然科学基金(BM2012010,BK20141424),江苏高校优势学科建设工程项目(YX030001),江苏省普通高校研究生实践创新项目(SJLX15_0390),南京邮电大学攀登项目(NY214085)及吉林大学开放课题(IOSKL2015KF32)资助 （973）
