Linear benzene-fused bis(tetrathiafulvalene) compounds for solution processed organic field-effect transistors
作者:Xike Gao、Weiping Wu、Yunqi Liu、Shibo Jiao、Wenfeng Qiu、Gui Yu、Liping Wang、Daoben Zhu
DOI:10.1039/b613093c
日期:——
Three new linear benzene-fused bis(tetrathiafulvalene) compounds (4–6) were synthesized and characterized. Compounds 4 and 5, comprising branched alkyl chains (2-ethylbutyl and 2-ethylhexyl, respectively), had very good solubility in common organic solvents and were successfully used as p-channel semiconductors in solution-processed organic field-effect transistors (FET). The FET device based on 5 showed a mobility of 5.6 × 10–4 cm2 V–1 s–1 with an on/off ratio of 1.6 × 104, and the devices based on 4 and 5 displayed good reproducibility in air. In addition, 6, bearing the long n-dodecyl chains, exhibited self-assembly behavior; one-dimensional self-assembly micron-scale ribbons formed in solution and were revealed by scanning electron microscopy on SiO2 substrates.
合成并表征了三种新的线性苯稠合双(四硫富瓦烯)化合物(4-6)。化合物 4 和 5 包含支化烷基链(分别为 2-乙基丁基和 2-乙基己基),在常见有机溶剂中具有非常好的溶解度,并成功用作溶液加工的有机场效应晶体管 (FET) 中的 p 沟道半导体。基于5的FET器件显示出5.6×10–4 cm2 V–1 s–1的迁移率,开/关比为1.6×104,基于4和5的器件在空气中显示出良好的再现性。此外,带有长正十二烷基链的6表现出自组装行为;在溶液中形成一维自组装微米级带,并通过扫描电子显微镜在 SiO2 基底上显示出来。