Synthesis of Functionalizable Boron-Containing π-Electron Materials that Incorporate Formally Aromatic Fused Borepin Rings
作者:Anthony Caruso、Maxime A. Siegler、John D. Tovar
DOI:10.1002/anie.201000411
日期:——
extended π‐electron molecules contain bulky substituents that shield the vacant boron p orbitals and allow synthetic manipulation and purification under ambient conditions. These borepin‐containing compounds (see picture; Mes*=1,3,5‐tris(tert‐butyl)phenyl; B orange, C gray) display reversible cathodic electrochemistry and can be viewed as n‐type analogues to bent acene hydrocarbons.
不是一个整洁的乙 OH:基于Borepin扩展的π电子的分子包含屏蔽空置硼的p轨道,并允许合成操作和纯化在环境条件下大体积取代基。这些含硼钉的化合物(见图; Mes * = 1,3,5-三(叔丁基)苯基; B橙色,C灰色)显示可逆的阴极电化学,可被视为弯曲并苯烃的n型类似物。
DIBENZOHETEROCYCLIC COMPOUND AND PREPARATION METHOD AND APPLICATION THEREOF
申请人:NINGBO LUMILAN ADVANCED MATERIALS CO., LTD.
公开号:US20200385412A1
公开(公告)日:2020-12-10
A dibenzoheterocyclic compound wherein band gaps of HOMO and LUMO energy levels of the dibenzoheterocyclic compound are wide, light can be emitted in a deep blue light-emitting region; and the LUMO energy level of the dibenzoheterocyclic compound is low, so the LUMO energy level matches with an electron transport layer for electrons injection and transport. The dibenzoheterocyclic compound has hole transport performance, so as a light-emitting layer material, the dibenzoheterocyclic compound balances the ratio of electrons to holes in a light-emitting layer increasing the combination probability and improving the device light-emitting efficiency. The spatial configuration of the dibenzoheterocyclic compound avoids material stacking molecules, reduces annihilation of excitons, and inhibits efficiency roll-off. The dibenzoheterocyclic compound has thermal stability, so deep blue light can be emitted efficiently and stably. With an organic light-emitting diode and a deep blue light-emitting device with high light-emitting efficiency, low working voltage can be obtained.
Synthesis of benzo[ghi]fluoranthenes from 1-halobenzo[c]phenanthrenes by flash vacuum pyrolysis
作者:M.John Plater
DOI:10.1016/0040-4039(94)88101-4
日期:1994.8
1-Chlorobenzo[c]phenanthrene 23 was prepared via the oxidative photochemical cyclisation of suitably halogenated stilbenes and was cyclised to benzo[ghi]fluoranthene 2 by flashvacuumpyrolysis.
Boron-Containing PI-Electron Materials Incorporating Formally Aromatic and Neutral Borepin Rings
申请人:Tovar John Dayton
公开号:US20130059996A1
公开(公告)日:2013-03-07
The synthesis, functionalization and characterization of borepin-based extended pi-electron molecules is disclosed. Bulky substituents shielded the vacant boron p-orbitals thus allowing synthetic manipulation and purification under ambient lab conditions. The presently disclosed borepin-containing compounds displayed reversible cathodic electrochemistry and can be viewed as n-type analogues to bent acene hydrocarbons.