Supertwistacene: A Helical Graphene Nanoribbon,Journal of the American Chemical Society

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Supertwistacene: A Helical Graphene Nanoribbon
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-09-09 , DOI: 10.1021/jacs.0c08555
Shuang Ma ₁ , Jiajian Gu ₁ , Chaojun Lin ₁ , Zhixing Luo ₁ , Yanpeng Zhu ₁ , Jiaobing Wang ₁

Affiliation

This work describes a synthetic chiral graphene nanoribbon, named supertwistacene 1. It has four superbenzene (HBC) units linearly fused in a helical manner. The structure of 1, 4.3 nm in length, with an end-to-end twist of 117̊, was confirmed by single crystal X-ray diffraction. In contrast to various twistacene compounds and their analogues, 1 has a very stable configuration. It resists thermal isomerization even when being heated at 200 oC for 16 h. Enantiopure 1 obtained by chiral HPLC shows distinct CD signals in a broad spectral range until 600 nm. Additionally, two smaller congeners of 1, the trimer 2 and the dimer 3, were also prepared and systematically investigated. Combining theoretical and experimental studies on 1-3 presents a big picture on their (chir)optical and electronic characteristics.

中文翻译：

Supertwistacene：螺旋状石墨烯纳米带

这项工作描述了一种合成的手性石墨烯纳米带，名为 supertwistacene 1。它具有四个以螺旋方式线性融合的超级苯 (HBC) 单元。通过单晶 X 射线衍射证实了 1、4.3 nm 长、端到端扭曲为 117̊ 的结构。与各种扭曲并苯化合物及其类似物相比，1 具有非常稳定的构型。即使在 200 oC 下加热 16 小时，它也能抵抗热异构化。通过手性 HPLC 获得的 Enantiopure 1 在 600 nm 之前的宽光谱范围内显示出明显的 CD 信号。此外，还制备并系统研究了两个较小的 1 同系物，即三聚体 2 和二聚体 3。结合对 1-3 的理论和实验研究，展示了它们的（手性）光学和电子特性的大图。

更新日期：2020-09-09

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