The synthesis, optical, thermal, and photoelectrical properties of new thiophene-based hydrazones are reported. The ionization potentials of the films of thiophene-based hydrazones, measured by the electron photoemission technique, range from 4.99 to 5.58 eV. Hole-drift mobilities in the solid solutions in bisphenol-Z polycarbonate (PC-Z) of the synthesized hydrazones were studied by time of flight technique. Room temperature charge mobilities in the solid solution of 5,2 ''-diformyl-2,2':5',5 ''-terthiophene di(N,N-diphenylhydrazone) in PC-Z exceeded 10(-5) cm(2)/Vs at high applied electric fields.
Palladium-catalyzed C-H formylation of electron-rich heteroarenes through radical dichloromethylation
作者:Yan Bao、Jian-Yong Wang、Ya-Xuan Zhang、Yan Li、Xi-Sheng Wang
DOI:10.1016/j.tetlet.2018.07.013
日期:2018.8
A novel palladium-catalyzed C-H formylation of electron-rich N-, O-, and S-containing heteroarenes has been developed. The key to success is that the commercially available BrCHCl2 was used as a stoichiometric carbonyl source. Mechanistic investigations indicated that different from the known Reimer-Tiemann reaction, this net C-H formylation proceeded through an electrophilc radical-type path.
Divergent Synthesis and Evaluation of the in vitro Cytotoxicity Profiles of 3,4‐Ethylenedioxythiophenyl‐2‐propen‐1‐one Analogues
作者:Jayachandran Karunakaran、Nachiappan Dhatchana Moorthy、Somenath Roy Chowdhury、Saleem Iqbal、Hemanta K. Majumder、Krishnasamy Gunasekaran、Elangovan Vellaichamy、Arasambattu K. Mohanakrishnan
DOI:10.1002/cmdc.201900225
日期:2019.8.6
five human cancer cell lines. Preliminary structure–activityrelationships of EDOT‐incorporated 2‐propenone derivatives were also established. The EDOT‐appended enones demonstrated significant cytotoxicity against human cancer cell lines. The most active analogue, (E)‐3‐(2,3‐dihydrothieno[3,4‐b][1,4]dioxin‐5‐yl)‐1‐(3,4,5‐trimethoxyphenyl)prop‐2‐en‐1‐one (3 p, GI50=110 nm), severely inhibited the clonogenic
通过缩合反应制备了一系列新的3,4-亚乙基二氧噻吩(EDOT)附加的丙烯酮,并评估了它们对五种人类癌细胞系的体外细胞毒性作用。还建立了EDOT掺入的2-丙烯酮衍生物的初步构效关系。EDOT附加的烯酮对人癌细胞具有明显的细胞毒性。活性最高的类似物(E)-3-(2,3-二氢噻吩并[3,4- b ] [1,4]二恶英-5-基)-1-(3,4,5-三甲氧基苯基)prop-2 ‐en ‐‐‐‐‐‐‐‐‐‐‐‐‐(3 p,GI 50 = 110 n m),严重抑制了癌细胞的克隆潜力,并诱导了G2 / M期的细胞周期停滞,并导致HCT116结肠癌细胞具有> 4 N DNA含量的积累。此外,3 p表现出对人类拓扑异构酶I的酶活性的弱抑制作用。分子对接研究表明,该化合物优先结合至人类检查点2激酶(Chk2)催化域的ATP结合口袋,从而鉴定出新的二芳基2丙烯酮化学型可开发有效的Chk2抑制剂。
Synthesis and mesomorphic properties of novel Schiff base liquid crystalline EDOT derivatives
作者:Ashwathanarayana Gowda、Arun Roy、Sandeep Kumar
DOI:10.1016/j.molliq.2016.11.010
日期:2017.1
Herein, we reported novel banana liquid crystals derived from ethylenedioxythiophene (EDOT) central unit encompass with Schiff base. Structural charecterization of these compounds was carried out from their spectral and elemental analysis. Physical properties of all the newly synthesized compounds were investigated by polarising optical microscopy, differential scanning calorimetry, thermogravimetric
Oligothienylenevinylenes incorporating 3,4-ethylenedioxythiophene (EDOT) units
作者:Mathieu Turbiez、Pierre Frère、Jean Roncali
DOI:10.1016/j.tet.2005.01.107
日期:2005.3
self-rigidification of the conjugated system due to non covalent S⋯O intramolecular interactions. The strong electrondonoreffect of the EDOT units explains the determining role of the relative position of the EDOT units on the localization and stabilization of the positive charges in the radicalcation or dication states.
Three novel donor–π‐bridge–donor (D‐π‐D) hole‐transportingmaterials (HTMs) featuring triazatruxene electron‐donating units bridged by different 3,4‐ethylenedioxythiophene (EDOT) π‐conjugated linkers have been synthesized, characterized, and implemented in mesoporous perovskitesolarcells (PSCs). The optoelectronic properties of the new dumbbell‐shaped derivatives (DTTXs) are highly influenced by
合成了三种新颖的供体-π-桥-供体(D -π- D)空穴传输材料(HTM),它们具有由不同的3,4-亚乙基二氧噻吩(EDOT)π-共轭连接物桥接的三氮杂tru烯电子给体单元。并在介孔钙钛矿太阳能电池(PSC)中实现。新的哑铃形衍生物(DTTX)的光电特性受到EDOT基连接基的化学结构的强烈影响。由于扩展的π共轭作用,从DTTX-1传递到DTTX-2时,观察到红移的吸收和发射以及更强的供体能力。DTTX-3其特征是外部三氮杂卓烯单元与甲亚胺-EDOT中心支架之间的分子内电荷转移,导致更明显的红移。这三种新衍生物已与最新的三阳离子钙钛矿[(FAPbI 3)0.87(MAPbBr 3)0.13 ] 0.92 [CsPbI 3 ] 0.08结合在标准中孔PSC中进行了测试。在100 mA cm -2下,DTTX-1和DTTX-2的功率转换效率分别为17.48%和18.30%,接近于基准HTM sp