Creation of Bifunctional Materials: Improve Electron-Transporting Ability of Light Emitters Based on AIE-Active 2,3,4,5-Tetraphenylsiloles
作者:Long Chen、Yibin Jiang、Han Nie、Ping Lu、Herman H. Y. Sung、Ian D. Williams、Hoi Sing Kwok、Fei Huang、Anjun Qin、Zujin Zhao、Ben Zhong Tang
DOI:10.1002/adfm.201303867
日期:2014.6
3,4,5‐Tetraphenylsiloles are excellent solid‐state light emitters featured aggregation‐induced emission (AIE) characteristics, but those that can efficiently function as both light‐emitting and electron‐transporting layers in one organic light‐emitting diode (OLED) are much rare. To address this issue, herein, three tailored n‐type light emitters comprised of 2,3,4,5‐tetraphenylsilole and dimesitylboryl
2,3,4,5-四苯甲硅烷是出色的固态发光体,具有聚集诱导发射(AIE)特性,但可以有效地在一个有机发光二极管中既充当发光层又充当电子传输层( OLED)非常罕见。为了解决这个问题,本文设计并合成了由2,3,4,5-四苯基甲硅烷基和二聚三氟甲基官能团组成的三个定制的n型发光体。新的筒仓通过标准的光谱学和晶体学方法得到了充分的表征,并获得了令人满意的结果。研究了它们的热稳定性,电子结构,光物理性质,电化学行为及其在OLED中的应用。这些新型筒仓在固体薄膜中具有高发射效率的AIE特性,并且其LUMO能量水平低于其父母的2,3,4,5-四苯基甲硅烷基。通过采用新型硅酮作为发光体和电子传输体制造的双层OLED [ITO / NPB(60 nm)/硅酮(60 nm)/ LiF(1 nm)/ Al(100 nm)]具有出色的性能,同时高达13.9 cd A的高电致发光效率-1,4.35%和11.6流明w