Hou Ian Cheng-Yi, Sun Qiang, Eimre Kristjan, Di Giovannantonio Marco, Urgel José I, Ruffieux Pascal, Narita Akimitsu, Fasel Roman, Müllen Klaus
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Department Chemie, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany.
J Am Chem Soc. 2020 Jun 10;142(23):10291-10296. doi: 10.1021/jacs.0c03635. Epub 2020 May 26.
Multiple fused pentagon-heptagon pairs are frequently found as defects at the grain boundaries of the hexagonal graphene lattice and are suggested to have a fundamental influence on graphene-related materials. However, the construction of sp-carbon skeletons with multiple regularly fused pentagon-heptagon pairs is challenging. In this work, we found that the pentagon-heptagon skeleton of azulene was rearranged during the thermal reaction of an azulene-incorporated organometallic polymer on Au(111). The resulting sp-carbon frameworks were characterized by high-resolution scanning probe microscopy techniques and feature novel polycyclic architectures composed of multiple regularly fused pentagon-heptagon pairs. Moreover, the calculated analysis of its aromaticity revealed a peculiar polar electronic structure.
多个融合的五角形 - 七角形对经常作为六方石墨烯晶格晶界处的缺陷被发现，并被认为对石墨烯相关材料具有根本性影响。然而，构建具有多个规则融合的五角形 - 七角形对的sp - 碳骨架具有挑战性。在这项工作中，我们发现薁并入的有机金属聚合物在Au(111)上进行热反应时，薁的五角形 - 七角形骨架发生了重排。所得的sp - 碳骨架通过高分辨率扫描探针显微镜技术进行了表征，并具有由多个规则融合的五角形 - 七角形对组成的新型多环结构。此外，对其芳香性的计算分析揭示了一种独特的极性电子结构。
