Construction of efficient blue AIE emitters with triphenylamine and TPE moieties for non-doped OLEDs
作者:Jing Huang、Yibin Jiang、Jie Yang、Runli Tang、Ni Xie、Qianqian Li、Hoi Sing Kwok、Ben Zhong Tang、Zhen Li
DOI:10.1039/c3tc32207f
日期:——
were fully investigated. Thanks to the introduction of the meta-linkage mode on the TPE core, their π-conjugation length could be effectively restricted to ensure blue emission. The non-doped OLEDs based on these four emitters exhibit blue emissions from 443–466 nm, largely blue-shifted with respect to the green emission of 2TPATPE (514 nm). Meanwhile, good electroluminescence efficiencies with Lmax
本文通过将具有空穴连接的三苯胺(TPA)和四苯乙烯(TPE)部分与不同的键合位置合并在一起,形成1,2-双[4'-((二苯氨基)联苯-4-基] -1)的四个衍生物,成功地合成了具有确定结构的2-diphenylethene(2TPATPE),并对其热,光学和电子性质进行了充分研究。由于在TPE内核上引入了元链接模式,因此可以有效地限制它们的π共轭长度,以确保发出蓝色光。基于这四个发射器的非掺杂OLED表现出443-466 nm的蓝色发射,相对于2TPATPE的绿色发射而言,蓝移很大(514nm)。同时,具有良好的电致发光效率大号最大值,η C,最大值,和η P,最高可达至8160 CD米-2,3.79光盘-1,和2.94林w ^ -1也已获得分别,进一步验证我们的蓝色AIE荧光团的合理设计。