本文中,我们描述了带有咔唑基团的N杂环多环化合物(即π扩展的苯并二咔唑和π扩展的吲哚并咔唑)的金催化双向合成。总体而言,合成了四个以前未知的核心结构。这种方法是收敛的,模块化的,金催化的关键步骤包括从稳定的叠氮基化合物开始的级联反应。对获得的分子进行了充分表征,并研究了它们的光学和电子性质以及在真空沉积产生的有机薄膜晶体管中的性能。测得的载流子迁移率高达0.3 cm 2 / Vs。
Catalytic Enantioselective Synthesis of Axially Chiral Polycyclic Aromatic Hydrocarbons (PAHs) via Regioselective C–C Bond Activation of Biphenylenes
作者:Hideaki Takano、Natsumi Shiozawa、Yoshitane Imai、Kyalo Stephen Kanyiva、Takanori Shibata
DOI:10.1021/jacs.9b12205
日期:2020.3.11
Chiral polycyclicaromatichydrocarbons (PAHs) are expected to have unusual physical properties due to their chirality and extremely expanded π-conjugated system. Indeed, PAHs are expected to be useful as chiral recognizers and organic semiconductors. Therefore, a method for the synthesis of chiral PAHs is strongly desired. Although there are some reports of the enantioselective synthesis of helically
Synthesis and structures of helical polycyclic aromatic hydrocarbons bearing aryl substituents at the most sterically hindered positions
作者:Yanzhong Zhang、Jeffrey L. Petersen、Kung K. Wang
DOI:10.1016/j.tet.2007.11.073
日期:2008.2
polycyclic aromatic hydrocarbons bearing one or two aryl substituents at the most sterically hindered positions to cause helical twists. The dynamic behaviors involving the helix inversion and the restricted rotation of the aryl substituents were investigated by temperature-dependent NMR studies. The X-ray structure of an indeno-fused 1-phenylpentahelicene derivative showed severe distortion of the [5]helicene
Achieving Ultimate Narrowband and Ultrapure Blue Organic Light‐Emitting Diodes Based on Polycyclo‐Heteraborin Multi‐Resonance Delayed‐Fluorescence Emitters
To achieve an ultimate wide color gamut for ultrahigh-definition displays, there is great demand for the development of organic light-emitting diodes (OLEDs) enabling monochromatic, ultrapureblue electroluminescence (EL). Herein, high-efficiency and ultrapureblue OLEDs based on polycyclo-heteraborin multi-resonance thermally activated delayedfluorescence (MR-TADF) materials, BOBO-Z, BOBS-Z, and
ORGANIC ELECTROLUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE
申请人:SAMSUNG DISPLAY CO., LTD.
公开号:US20200044159A1
公开(公告)日:2020-02-06
An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, the emission layer including a condensed polycyclic compound of three or more six-membered rings, at least two six-membered rings among the six-membered rings including an electron donor moiety and an electron acceptor moiety at facing positions, respectively, the at least two six-membered rings not being immediately adjacent to each other, an electron transport region on the emission layer, and a second electrode on the electron transport region.