使用基于醌的氯腈/ H +试剂作为可循环使用的有机(无金属)氧化剂体系,可以显示出多种芳基胺进行氧化C-C键形成,以提供联苯胺/萘啶。设计了具有各种取代基的芳胺(3°/ 2°)用于理解氧化二聚作用的空间和电子偏好,并提出了涉及胺自由基阳离子的机理。通过氧化CC偶联获得的四苯基联苯胺衍生物已通过简单的化学转化进一步转化为发射蓝色光的空穴传输材料。这项研究强调了以简单,经济和有效的方式准备新型HTM。
Catalytic and Aerobic Oxidative Biaryl Coupling of Anilines Using a Recyclable Heterogeneous Catalyst for Synthesis of Benzidines and Bicarbazoles
作者:Kenji Matsumoto、Yasunori Toubaru、Shohei Tachikawa、Ayaka Miki、Kentaro Sakai、Syota Koroki、Tsukasa Hirokane、Mitsuru Shindo、Masahiro Yoshida
DOI:10.1021/acs.joc.0c02020
日期:2020.12.4
rhodium-catalyzed oxidative homocoupling reaction of anilines utilizing molecular oxygen as the sole oxidant is reported. Employing a commercially available and recyclable Rh/C catalyst enabled the oxidative dimerization of various anilines, including N,N-disubstituted and N-monosubstituted anilines, as well as diarylamines, triarylamines, and carbazoles. Additionally, the catalytic protocol was extended
Synthesis and Electro-Optical Properties of Adamantane-Based Host and Hole-Transporting Material for Thermal Stable Blue Phosphorescent OLEDs
作者:Sungkoo Lee、Min Hye Seo
DOI:10.1166/jnn.2017.14749
日期:2017.10.1
New host/hole-transporting material, namely 9,9'-5-[(3r,5r,7r)-adamantan-1-yl]-1,3-phenylene} bis(9H-carbazole) (ad-mCP) and N-4-(3-((3r,5r,7r)-adamantan-1-yl) phenyl)-N-4'-(3-((2R, 5S, 6as)hexahydro- 2,5-methanopentalen-3a(1H'-yl) phenyl)-N-4'N-4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (ad-TPD), were designed and synthesized by introducing rigid adamantane unit into 1,3-Bis(N-carbazolyl) benzene and N-4'(NN4)-N-4'', N4'-tetraphenyl-[1,1'-biphenyl]-4,4'-diamine via a Suzuki coupling reaction. Thermal, photophysical, and electrochemical properties of ad-mCP and ad-TPD were investigated. Using adamantane unit leads to enhance thermal stability. Phosphorescent organic light-emitting diodes constructed using ad-mCP emitting layer and ad-TPD hole transporting layer produce bright blue emissions with a high maximum current efficiency of 7.0 cd/A.
FRECHET, JEAN M. J.;GAUTHIER, SYLVIE;LIMBURG, WILLIAM W.;LOUTFY, RAFIK O.+
作者:FRECHET, JEAN M. J.、GAUTHIER, SYLVIE、LIMBURG, WILLIAM W.、LOUTFY, RAFIK O.+
DOI:——
日期:——
IMAGING MEMBER
申请人:Tong Yuhua
公开号:US20090325094A1
公开(公告)日:2009-12-31
Provided is an imaging member such as photoreceptor comprising a substrate, a charge generation layer, a first charge transport layer, a second charge transport layer, and an optional overcoat layer. The first charge transport layer is formed from a first CTL formulation comprising an aromatic monoamine and a first polymeric film forming binder material. The second charge transport layer is formed from a second CTL formulation comprising aromatic diamine and a second polymeric film forming binder material. The imaging member has gained improved properties such as removal of anti-curl layer, desirable structural flatness, electrical properties, mechanical robustness, flexibility, longevity, and copy image qualities over extended use, among others.