Gu Yanwei, Wu Xiaojin, Gopalakrishna Tullimilli Y, Phan Hoa, Wu Jishan
Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore.
Angew Chem Int Ed Engl. 2018 May 28;57(22):6541-6545. doi: 10.1002/anie.201802818. Epub 2018 May 2.
An efficient synthetic method toward graphene-like molecules (GLMs), having four zigzag edges, is described. They were obtained as stable materials and their structures were confirmed by X-ray crystallographic analysis. They exhibit topology- and size-dependent electronic properties and global aromaticity, which are all different from GLMs having either all-armchair edges, or three zigzag edges, or two armchair/two zigzag edges. They can be reversibly oxidized and reduced into stable charged species, which show fragmental aromatic character to minimize anti-aromaticity. Our studies give some new insights into the electronic structures and properties of a new type of rarely studied GLMs.
本文描述了一种合成具有四条锯齿形边缘的类石墨烯分子（GLMs）的有效方法。它们以稳定材料形式获得，其结构通过X射线晶体学分析得以证实。它们展现出拓扑和尺寸依赖性的电子性质以及全局芳香性，这些性质均不同于具有全扶手椅形边缘、三条锯齿形边缘或两条扶手椅形/两条锯齿形边缘的GLMs。它们能够可逆地氧化和还原为稳定的带电物种，这些带电物种表现出片段性芳香特征以最小化反芳香性。我们的研究为一类新型的、鲜有研究的GLMs的电子结构和性质提供了一些新见解。
