A facile and powerful microwave-enhanced multiple Suzuki coupling methodology has been developed and a novel series of highly luminescent six-arm monodisperse macromolecules have thus been prepared with high yield and purity.
New Discotic Mesogens Based on Triphenylene-Fused Triazatruxenes: Synthesis, Physical Properties, and Self-Assembly
作者:Baomin Zhao、Bo Liu、Rui Qi Png、Kai Zhang、Kheng Aik Lim、Jing Luo、Jinjun Shao、Peter K. H. Ho、Chunyan Chi、Jishan Wu
DOI:10.1021/cm903555s
日期:2010.1.26
efficient charge injection from electrodes such as gold electrodes. Their thermal behavior and self-assembly were studied by different techniques such as thermogravimetric analysis, differential scanning calorimetry, polarizing optical microscopy, and variable-temperature X-ray diffraction. These new discotic mesogens have very good thermal stability and show thermotropic liquid crystalline behavior. Ordered
通过微波辅助六溴杂氮杂氮杂苯的6倍Suzuki偶联反应,然后用FeCl 3制备了一种新型的基于三亚苯基稠合的三杂氮杂苯的盘状介晶。介导的氧化环脱氢。与三亚苯基和三氮杂tru烯本身相比,这些盘状分子显示出扩展的π共轭。更重要的是,它们具有理想的HOMO能级,可以从电极(例如金电极)中高效注入电荷。通过热重分析,差示扫描量热法,偏振光学显微镜和可变温度X射线衍射等不同技术研究了它们的热行为和自组装。这些新的盘状介晶具有很好的热稳定性,并显示出热致液晶行为。在这两种化合物中均观察到有序的柱状液晶相和结晶相,其相变温度和中间相宽度可调。对于TP-TATC6和TP-TATC12分别获得2 V -1 s -1)。有趣的是,由于强烈的分子间相互作用,长脂肪链取代的TP-TATC12可以胶凝几种非极性烃溶剂或极性脂族醇和酯溶剂。所有这些特性使这种新型的盘状液晶成为了电子器件(例如场效应晶体管,发光二极管和太阳能电池)的潜在空穴传输材料。
Nitrogen-doped star-shaped polycyclic aromatic hydrocarbons based on fused triazatruxenes: synthesis and optoelectronic properties
A new class of nitrogen-containing polycyclic aromatic hydrocarbons (N-PAHs) based on naphthalene-fused triazatruxenes, named as TATNaCn (n = 1–3), were successfully designed, synthesized and characterized. During the oxidativecyclodehydrogenation, multiple dehydrocyclization molecules can be effectively separated in a single reaction, implying a stepwise ring-closing process. A combination of thermal
The syntheses of novel well-defined star-shaped carbazole-functionalized triazatruxenes, which consist of six carbazole arms linked with a central triazatruxene core consisting of three carbazoles with one phenyl, are presented. Both 9-hexylcarbazole and 9-phenylcarbazole as arms gave high yields. Their chemical formulas were confirmed by means of H-1 NMR, MALDI-TOF mass spectroscopy, and elementary analysis. The fluorescent spectra showed that these compounds exhibit good blue fluorescence. The maximum fluorescence emission wavelengths were between 420 and 430 nm. (c) 2006 Elsevier Ltd. All rights reserved.
Multinuclear 2-(Quinolin-2-yl)quinoxaline-Coordinated Iridium(III) Complexes Tethered by Carbazole Derivatives: Synthesis and Photophysics
作者:Xiaolin Zhu、Bingqing Liu、Peng Cui、Svetlana Kilina、Wenfang Sun
DOI:10.1021/acs.inorgchem.0c02366
日期:2020.12.7
Five mono/di/trinuclear iridium(III) complexes (1–5) bearing the carbazole-derivative-tethered 2-(quinolin-2-yl)quinoxaline (quqo) diimine (N^N) ligand were synthesized and characterized. The photophysical properties of these complexes and their corresponding diimine ligands were systematically studied via UV–vis absorption, emission, and transient absorption (TA) spectroscopy and simulated by time-dependent