Saturated deep-blue emitter based on a spiro[benzoanthracene–fluorene]-linked phenanthrene derivative for non-doped organic light-emitting diodes
作者:Houjie Liang、Xinxin Wang、Xingye Zhang、Zhiyang Liu、Ziyi Ge、Xinhua Ouyang、Suidong Wang
DOI:10.1039/c4nj00735b
日期:——
A spiro[benzoanthraceneâfluorene] derivative containing a phenanthrene moiety, 2â²,3-di(phenanthren-9-yl)spiro[benzo[de]anthracene-7,9â²-fluorene] (DPSBAF), was prepared by a Suzuki coupling reaction. The photophysical and photochemical properties were investigated systematically. A non-doped organic light-emitting diode using DPSBAF as the emitter achieved a luminance efficiency of 2.18 cd Aâ1 with Commission Internationale de l'Ãclairage 1931 chromaticity coordinates of (0.15, 0.09). The synthesized spiro[benzoanthraceneâfluorene] derivative with a high thermal stability, a glass transition temperature of 210 °C and a decomposition temperature of 410 °C, shows potential for application in non-doped saturated deep-blue organic light-emitting diodes.
一种含有菲环部分的螺[苯并蒽–芴]衍生物,2′,3-二(菲-9-基)螺[苯并(de)蒽-7,9′-芴] (DPSBAF),通过铃木偶联反应合成。系统研究了其光物理和光化学性质。使用DPSBAF作为发光材料的非掺杂有机发光二极管实现了2.18 cd A−1的光效,以及国际照明委员会1931色度坐标为(0.15, 0.09)。合成的螺[苯并蒽–芴]衍生物具有高热稳定性,玻璃化转变温度为210°C,分解温度为410°C,显示出在非掺杂饱和深蓝有机发光二极管中的应用潜力。
Role of the aromatic bridge on radical ions formation during reduction of diphosphaalkenes
structures have been determined. While electrochemical measurements show that these two systems are easily reduced, EPR spectra indicate that, at room temperature, the electronic structures of the two reduction compounds 1˙− and 2˙− are quite different. In 1˙−, in good accordance with DFT predictions, the unpaired electron is delocalized on the full molecule while in 2˙− it is confined on a single phosphaalkene
Compound and organic light-emitting device including the same
申请人:Samsung Display Co., Ltd.
公开号:US11114622B2
公开(公告)日:2021-09-07
An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a compound of Formula 1:
According to one or more embodiments of the present disclosure, due to the inclusion of the compound of Formula 1, characteristics of an organic light-emitting device may be improved.