六极[7]螺旋芴的合成与表征，一种环状扭曲的手性纳石墨烯。
Synthesis and Characterization of Hexapole [7]Helicene, A Circularly Twisted Chiral Nanographene.
机构信息
School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , China.
School of Physics , Sun Yat-Sen University , Guangzhou 510275 , China.
出版信息
J Am Chem Soc. 2018 Mar 28;140(12):4222-4226. doi: 10.1021/jacs.8b01447. Epub 2018 Mar 19.
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 (λ = 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.
我们报告了两种六极[7]螺旋（H7H）的合成与表征。单晶 X 射线衍射明确证实了分子结构。H7H 在紫外至近红外（λ=618nm）范围内吸收光，具有明显的Cotton 效应。循环伏安法揭示了九个可逆氧化还原态，从-2 到+6 依次递增。H7H 的这些手性和电子性质是螺旋小同系物所无法获得的。
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