Download file (2.2MB)
Download as zip (1.93MB)

コレクション

引用

説明:

Graphene nanoribbons (GNRs) and nanographenes synthesized by on-surface reactions using tailor-made molecular precursors offer an ideal playground for a study of magnetism towards nano-spintronics. Although the zigzag edge of GNRs has been known to host magnetism, the underlying metal substrates usually veil the edge-induced Kondo effect. Here, we report the on-surface synthesis of unprecedented, π-extended 7-armchair GNRs using 7-bromo-12-(10-bromoanthracen-9-yl)tetraphene as the precursor. Characterization by scanning tunneling microscopy/spectroscopy revealed unique rearrangement reactions leading to pentagon- or pentagon/heptagon-incorporated, nonplanar zigzag termini, which demonstrated Kondo resonances even on bare Au(111). Density functional theory calculations indicate that the nonplanar structure significantly reduces the interaction between the zigzag terminus and the Au(111) surface, leading to a recovery of the spin localization of the zigzag edge. Such a distortion of planar GNR structures offers a degree of freedom to control the magnetism on metal substrates.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: graphene nanoribbons, magnetism

刊行年月日: 2023-06-12

出版者: Wiley

掲載誌:

• Angewandte Chemie International Edition (ISSN: 00448249) vol. 62 issue. 24 e202302534

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/anie.202302534

関連資料:

その他の識別子:

連絡先:

更新時刻: 2024-01-05 22:13:45 +0900

MDRでの公開時刻: 2023-12-28 16:30:21 +0900