Syntheses of Ring-Fused B−N Heteroaromatic Compounds
摘要:
3a,7a-Azaborindene (14) has been prepared by two multistep syntheses using the Grubbs ring-closing metathesis from appropriate B-vinyl,N-allyl-aminoboranes. 14 was deprotonated by KN(SiMe3)2 to give 3a,7a-azaborindenylpotassium (5). The reaction of 5 with Cp*ZrCl3 afforded the corresponding Zr(IV) complex 18, which on activation with excess methylaluminoxane, forms a good catalyst for the polymerization of ethylene. The reaction of 5 with methylene chloride and BuLi gave 4a,8a-azaboranaphthalene (6), which is isoelectronic and isostructural with naphthalene. DFT calculations on 6 gave a structure that is in good agreement with X-ray diffraction data.
LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING SAME
申请人:Samsung Display Co., Ltd.
公开号:US20220024958A1
公开(公告)日:2022-01-27
A light-emitting device includes a first compound represented by Formula 1; and a second compound, a third compound, a fourth compound, or any combination thereof, each having a specific formula:
emitting device may have excellent driving voltage, current density, high luminescence efficiency, and long lifespan, and may be used in the manufacture of a high quality electronic apparatus.
C–H Functionalization of BN-Aromatics Promoted by Addition of Organolithium Compounds to the Boron Atom
作者:Alberto Abengózar、Miguel Angel Fernández-González、David Sucunza、Luis Manuel Frutos、Antonio Salgado、Patricia García-García、Juan J. Vaquero
DOI:10.1021/acs.orglett.8b02040
日期:2018.8.17
Addition of an organolithium compound to a BN-phenanthrene with embedded B and N atoms is proposed to result in coordination of RLi to the boron atom. This coordination, supported by NMR spectroscopy and DFT calculations, increases the nucleophilicity of the system in the β position to the N atom and is therefore a useful tool for promoting regioselective C–H functionalization of BN aromatics.
BN-embedded polycyclicaromatichydrocarbons (PAHs) with unique optoelectronicproperties are underdeveloped relative to their carbonaceous counterparts due to the lack of suitable and facile synthetic methods. Moreover, the dearth of electron-deficient BN-embedded PAHs further hinders their application in organic electronics. Here we present the first facile synthesis of novel perylene diimide derivatives
由于缺乏合适且简便的合成方法,具有独特光电特性的嵌入BN的多环芳烃(PAHs)相对于其碳质对应物尚未开发。此外,缺乏电子缺陷型 BN 嵌入 PAHs 进一步阻碍了它们在有机电子学中的应用。在这里,我们提出了具有 n 型 B-N 共价键的新型苝二亚胺衍生物 (B 2 N 2 -PDI) 的简便合成方法。这些化合物的结构已通过 NMR、MS 和 X 射线晶体学的详细表征得到充分证实。进一步研究表明,BN 单元的引入显着改变了这些 B 2 N 2的光物理和电子特性-PDI,并在理论计算的帮助下进一步理解。与母体苝二酰亚胺(PDI)相比,B 2 N 2 -PDI表现出更深的最高占据分子轨道能级,在高能区有新的吸收峰,吸收和发射最大值的深色移,以及光致发光量子产率的降低。基于 B 2 N 2 -PDI的单晶场效应晶体管展示了高达 0.35 cm 2 V –1 s –1的电子迁移率,展示了它们在光电材料中的潜在应用。