期刊
CHEMICAL SCIENCE
卷 10, 期 14, 页码 4025-4031出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc05416a
关键词
-
资金
- European Union [696656]
- German Research Foundation (DFG) within the Cluster of Excellence Center for Advancing Electronics Dresden (cfaed)
- EnhanceNano [391979941]
- European Social Fund
- Federal State of Saxony (ESF-Project GRAPHD, TU Dresden)
- DFG [INST 269/618-1]
- China Scholarship Council
Controlling the aromaticity and electronic properties of curved -conjugated systems has been increasingly attractive for the development of novel functional materials for organic electronics. Herein, we demonstrate an efficient synthesis of two novel wave-shaped polycyclic hydrocarbons (PHs) 1 and 2 with 64 -electrons. Among them, the wave-shaped -conjugated carbon skeleton of 2 is unambiguously revealed by single-crystal X-ray crystallography analysis. The wave-shaped geometry is induced by steric congestion in the cove and fjord regions. Remarkably, the aromaticity of these two structural isomers can be tailored by the annulated direction of cyclopenta[b]fluorene units. Isomer 1 (Eoptg = 1.13 eV) behaves as a closed-shell compound with weakly antiaromatic feature, whereas its structural isomer 2 displays a highly stable tetraradical character (y(0) = 0.23; y(1) = 0.22; t(1/2) = 91 days) with a narrow optical energy gap of 0.96 eV. Moreover, the curved PH 2 exhibits remarkable ambipolar charge transport in solution-processed organic thin-film transistors. Our research provides a new insight into the design and synthesis of stable functional curved aromatics with multiradical characters.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据