Synthesis and Characterization of Hexapole [7]Helicene, A Circularly Twisted Chiral Nanographene

We report the synthesis and characterization of two hexapole [7]­helicenes (H7Hs). Single crystal X-ray diffraction unambiguously confirms the molecular structure. H7H absorbs light, with distinct Cotton effect, from ultraviolet to the near-infrared (λmax = 618 nm). Cyclic voltammetry reveals nine r...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2018-03, Vol.140 (12), p.4222-4226
Main Authors: Zhu, Yanpeng, Xia, Zeming, Cai, Zeying, Yuan, Ziyong, Jiang, Nianqiang, Li, Tao, Wang, Yonggen, Guo, Xiaoyu, Li, Zhihao, Ma, Shuang, Zhong, Dingyong, Li, Yang, Wang, Jiaobing
Format: Article
Language:English
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Summary:We report the synthesis and characterization of two hexapole [7]­helicenes (H7Hs). Single crystal X-ray diffraction unambiguously confirms the molecular structure. H7H absorbs light, with distinct Cotton effect, from ultraviolet to the near-infrared (λmax = 618 nm). Cyclic voltammetry reveals nine reversible redox states, consecutively from −2 to +6. These chiroptical and electronic properties of H7H are inaccessible from helicene’s small homologues.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.8b01447