A series of monodisperse polycyclic aromatic hydrocarbons (PAHs) with up to 25 linearly annulated benzene rings are synthesized and well characterized by single-crystal X-ray diffraction. Unique double-helical structures are generated between the conformationally flexible monomeric strands via the intermolecular interactions driven by dispersion and weak π stacking. This contribution could inspire the design of novel artificial double helices.

中文翻译：

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分散驱动手性扭曲 PAH 双螺旋的形成

合成了一系列具有多达 25 个线性环状苯环的单分散多环芳烃 (PAH)，并通过单晶 X 射线衍射对其进行了很好的表征。通过分散和弱π堆积驱动的分子间相互作用，在构象灵活的单体链之间产生独特的双螺旋结构。这一贡献可以激发新型人工双螺旋的设计。