Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-8602, Japan.
Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya, 464-8602, Japan.
Angew Chem Int Ed Engl. 2021 Oct 25;60(44):23508-23532. doi: 10.1002/anie.202100260. Epub 2021 Jul 8.
Molecular nanocarbons containing heptagonal rings have attracted increasing interest due to their dynamic behavior, electronic properties, aromaticity, and solid-state packing. Heptagon incorporation can not only induce negative curvature within nanocarbon scaffolds, but also confer significantly altered properties through interaction with adjacent non-hexagonal rings. Despite the disclosure of several beautiful examples in recent years, synthetic strategies toward heptagon-embedded molecular nanocarbons remain relatively limited due to the intrinsic challenges of heptagon formation and incorporation into polyarene frameworks. In this Review, recent advances in solution-mediated and surface-assisted synthesis of heptagon-containing molecular nanocarbons, as well as the intriguing properties of these frameworks, will be discussed.
含七元环的分子纳米碳由于其动态行为、电子性质、芳香性和固态堆积而引起了越来越多的关注。七元环的掺入不仅可以在纳米碳支架内诱导负曲率，而且还可以通过与相邻的非六元环相互作用赋予显著改变的性质。尽管近年来已经报道了几个漂亮的例子，但由于七元环形成和掺入多芳环骨架的固有挑战，七元环嵌入的分子纳米碳的合成策略仍然相对有限。在这篇综述中，将讨论含七元环的分子纳米碳的溶液介导和表面辅助合成的最新进展，以及这些框架的有趣性质。
