On-Surface Synthesis of Unsaturated Carbon Nanostructures with Regularly Fused Pentagon-Heptagon Pairs,Journal of the American Chemical Society

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On-Surface Synthesis of Unsaturated Carbon Nanostructures with Regularly Fused Pentagon-Heptagon Pairs
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-05-19 , DOI: 10.1021/jacs.0c03635
Ian Cheng-Yi Hou _{1,

2} , Qiang Sun ₃ , Kristjan Eimre ₃ , Marco Di Giovannantonio ₃ , José I Urgel ₃ , Pascal Ruffieux ₃ , Akimitsu Narita _{1,

4} , Roman Fasel _{3,

5} , Klaus Müllen _{1,

2}

Affiliation

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 sp2-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 sp2-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.

中文翻译：

具有规则融合的五边形-七边形对的不饱和碳纳米结构的表面合成

多个融合的五边形-七边形对经常被发现作为六方石墨烯晶格晶界处的缺陷，并被认为对石墨烯相关材料有根本影响。然而，构建具有多个规则融合的五边形-七边形对的 sp2-碳骨架具有挑战性。在这项工作中，我们发现在 Au(111) 上掺入了 azulene 的有机金属聚合物的热反应过程中，azulene 的五边形-七边形骨架发生了重排。由此产生的 sp2-碳框架通过高分辨率扫描探针显微镜技术表征，并具有由多个规则融合的五边形-七边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奇特的极性电子结构。

更新日期：2020-05-19

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