Qin Ying, Chen Hui, Yao Jia, Zhou Yue, Cho Yongjoon, Zhu Yulin, Qiu Beibei, Ju Cheng-Wei, Zhang Zhi-Guo, He Feng, Yang Changduk, Li Yongfang, Zhao Dongbing
State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China.
Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
Nat Commun. 2020 Nov 16;11(1):5814. doi: 10.1038/s41467-020-19605-z.
In organic electronics, an aromatic fused ring is a basic unit that provides π-electrons to construct semiconductors and governs the device performance. The main challenge in developing new π-skeletons for tuning the material properties is the limitation of the available chemical approach. Herein, we successfully synthesize two pentacyclic siloxy-bridged π-conjugated isomers to investigate the synergistic effects of Si and O atoms on the geometric and electronic influence of π-units in organic electronics. Notably, the synthesis routes for both isomers possess several advantages over the previous approaches for delivering conventional aromatic fused-rings, such as environmentally benign tin-free synthesis and few synthetic steps. To explore their potential application as photovoltaic materials, two isomeric acceptor-donor-acceptor type acceptors based on these two isomers were developed, showing a decent device efficiency of 10%, which indicates the great potential of this SiO-bridged ladder-type unit for the development of new high-performance semiconductor materials.
在有机电子学中，芳香稠环是一种基本单元，它提供π电子以构建半导体并决定器件性能。开发用于调节材料性能的新型π骨架的主要挑战在于可用化学方法的局限性。在此，我们成功合成了两种五环硅氧基桥连的π共轭异构体，以研究硅和氧原子对有机电子学中π单元的几何和电子影响的协同效应。值得注意的是，两种异构体的合成路线相对于以往用于提供传统芳香稠环的方法具有几个优点，例如环境友好的无锡合成以及较少的合成步骤。为了探索它们作为光伏材料的潜在应用，基于这两种异构体开发了两种异构体供体-受体-供体型受体，显示出10%的良好器件效率，这表明这种SiO桥连梯型单元在开发新型高性能半导体材料方面具有巨大潜力。
