Asymmetrical Fluorene[2,3-<i>b</i>]benzo[<i>d</i>]thiophene Derivatives: Synthesis, Solid-State Structures, and Application in Solution-Processable Organic Light-Emitting Diodes
作者:Chunyan Du、Shanghui Ye、Jianming Chen、Yunlong Guo、Yunqi Liu、Kun Lu、Ying Liu、Ting Qi、Xike Gao、Zhigang Shuai、Gui Yu
DOI:10.1002/chem.200900860
日期:2009.8.17
Moreover, the substituents strongly influence the fluorescence properties of the resulting FBT derivatives. The di‐n‐hexyl compound exhibits intense fluorescence in solution with the highest quantum yield of up to 91 %. Solution‐processed green phosphorescent organic light‐emitting diodes with the di‐n‐butyl derivative as the host material exhibited a maximum brightness of 14 185 cd m−2 and a luminescence
有效合成并充分表征了一系列新颖的不对称稠合化合物,这些化合物包含芴[2,3- b ]苯并[ d ]噻吩(FBT)的骨架。X射线单晶研究表明,取代基侧链的长度极大地影响了所获得的熔融化合物的固态堆积。DFT,光物理和电化学研究都表明,FBT具有较大的带隙,较低的HOMO能级,因此对氧化具有良好的稳定性。此外,取代基强烈影响所得FBT衍生物的荧光性质。该二ñ己基化合物在溶液中表现出强烈的荧光,最高量子产率高达91%。以二正丁基衍生物为主体的固溶处理绿色磷光有机发光二极管的最大亮度为14 185 cd m -2,发光效率为12 cd A -1。