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説明:

Skeletal rearrangement reaction is a class of important chemical reactions to synthesize various constitutional isomers from a given precursor molecule. This approach allows the synthesis of diverse nanographenes incorporating five- and seven-membered rings, thereby tuning their chemical and physical properties. Here, we present formation of five types of closed-shell and two types of open-shell nanographenes on Au(111) via carbon rearrangements of 7-(2,6-dimethylphenyl)-12-[10-(2,6-dimethylphenyl)anthracen-9-yl]tetraphene. The structural, electronic, and magnetic properties of various products composed of pentagonal or pentagonal/heptagonal rings were in-detail investigated with a combination of bond-resolved scanning tunneling microscopy/scanning tunneling spectroscopy at 4.3 K and density functional theory calculations. We found that both zigzag edges and fused pentagonal rings significantly affect the band gap and the spin polarization. This discovery could facilitate the on-surface synthesis of intriguing carbon nanostructures through skeletal rearrangement.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: scanning tunneling microscopy, Skeletal rearrangement reaction, Nanographene synthesis, Pentagonal and heptagonal carbon rings, Open-shell and closed-shell nanographenes, Density functional theory (DFT) calculations, On-surface carbon rearrangement

刊行年月日: 2026-12-31

出版者: Informa UK Limited

掲載誌:

• Science and Technology of Advanced Materials (ISSN: 14686996) vol. 27 issue. 1 2619342

研究助成金:

• the Japan Society for the Promotion of Science 24K21721
• the Japan Society for the Promotion of Science 19K24686
• the Japan Society for the Promotion of Science 24K01474
• the Japan Society for the Promotion of Science 25H00422

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1080/14686996.2026.2619342

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更新時刻: 2026-02-19 16:30:04 +0900

MDRでの公開時刻: 2026-02-19 14:09:19 +0900