新的含硫稠合杂环的简便合成是通过双重多米诺反应完成的,该反应包括碳硫交叉偶联,然后进行5内挖地环化。使用这种策略,可以得到一系列具有电子中性(-C 6 H 4 - n- Hex),富电子(-C 6 H 4 -NPh 2)和电子-中性的苯并,噻吩,吡啶和吡嗪并二乙炔不足(-C 4 H 3 N 2)取代基以高收率合成。所开发的方法被用于有效合成复杂的供体-受体分子。通过UV-VIS /发光光谱和循环伏安法分析了产物的光物理和电化学性质。
2,6-Dialkylphenyldithieno[3,2-b:2',3'-dithiophene derivatives (DPCn-DTT) were synthesized and characterized. Effect of alkyl groups on optical characteristics, electrochemical properties, film-forming ability, and field-effect performance was studied. The four compounds DPCn-DTT show almost the same energy levels of the highest occupied molecular orbits and optical energy gaps, but they exhibit different charge carrier transport characteristics. The thin film transistors based on DPC1-DIT with the shortest alkyl groups (methyl groups) show the highest mobility of 0.54 cm(2) V-1 s(-1). Substrate temperature and surface modification of the SiO2 insulators have a remarkable effect on field-effect performance. High-quality microribbons of DPC8-DTT with octyl groups were prepared by a solution-phase self-assembly process. Single crystal field-effect transistors based on an individual DPC8-DTT micro-ribbon exhibit a high mobility of 1.1 cm(2) V-1 s(-1) with a current on/off ratio of 6.5 x 10(4). (C) 2013 Elsevier Ltd. All rights reserved.
Concise Synthesis of Dithiophene Derivatives by a Palladium- Catalyzed Multiple C-S Cross Coupling/Cyclization Sequence
The facile synthesis of new sulfur‐containing fused heterocycles was achieved by a two‐fold domino reaction consisting of a carbon‐sulfur cross‐coupling, followed by a 5‐endo‐dig cyclization. Using this strategy a series of benzo‐, thiopheno‐, pyridine‐ and pyrazino‐dithienoacenes with electron‐neutral (‐C6H4‐n‐Hex), electron‐rich (‐C6H4‐NPh2) and electron‐deficient (‐C4H3N2) substituents was synthesized
新的含硫稠合杂环的简便合成是通过双重多米诺反应完成的,该反应包括碳硫交叉偶联,然后进行5内挖地环化。使用这种策略,可以得到一系列具有电子中性(-C 6 H 4 - n- Hex),富电子(-C 6 H 4 -NPh 2)和电子-中性的苯并,噻吩,吡啶和吡嗪并二乙炔不足(-C 4 H 3 N 2)取代基以高收率合成。所开发的方法被用于有效合成复杂的供体-受体分子。通过UV-VIS /发光光谱和循环伏安法分析了产物的光物理和电化学性质。
Synthesis, characterization and field-effect transistor performance of a benzoannulated pentathienoacene derivative
作者:Xiangye Qi、Sufen Zou、Xiaoxia Liu、Wanglong Hao、Huarong Zhang、Zhanzhan Zang、Haixia Zhang、Jianhua Gao、Wenping Hu
DOI:10.1039/c4nj01590h
日期:——
A new dihexyl-substituted thienoacene derivative exhibits high stability and a mobility of 0.04 cm2 V−1 s−1 based on its thin film transistors.