作者:Pierre-Luc T. Boudreault、Salem Wakim、Ming Lee Tang、Ye Tao、Zhenan Bao、Mario Leclerc
DOI:10.1039/b900271e
日期:——
The synthesis, characterization, and field-effect transistor (FET) properties of new indolo[3,2-b]carbazole (IC) based materials are reported. Instead of adding the long alkyl chains on the nitrogen atoms of the IC backbone like many other IC-based molecules, they were added at both ends of the molecule (octylthiophene, p-octylbenzene). Also, the amine groups on the IC backbone were either free or protected by methyl groups. The impact on the organization and thin-film morphology showed that the molecules stand perpendicular to the surface as demonstrated by XRD and AFM. The highest hole mobility obtained by these new p-type organic semiconductors was 0.22 cm2V−1 s−1 with an on/off ratio of about 105. The best performance was obtained with 3,9-di(p-octylbenzene)-5,11-dihydroxyindolo[3,2-b]carbazole. This performance is one of the best obtained by both IC derivatives and materials containing a secondary amine on the backbone.
报道了新型吲哚[3,2-b]喹啉(IC)基材料的合成、表征和场效应晶体管(FET)特性。与许多其他基于IC的分子在IC骨架的氮原子上添加长烷基链不同,这些链被添加在分子的两端(辛基噻吩、对辛基苯)。此外,IC骨架上的氨基要么是游离的,要么被甲基保护。对分子组织和薄膜形态的影响表明,这些分子与表面垂直,XRD和AFM的结果得到了证实。这些新型p型有机半导体获得的最高孔迁移率为0.22 cm²V⁻¹s⁻¹,开/关比约为10⁵。最佳性能出现在3,9-二(对辛基苯)-5,11-二羟基吲哚[3,2-b]喹啉中。这一性能是IC衍生物和骨架上含有次级胺的材料中获得的最佳性能之一。