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説明:

Triangulenes as neutral radicals are becoming promising candidates for future applications such as spintronics and quantum technologies. To extend the potential of the advanced materials, it is of importance to control their electronic and magnetic properties by multiple graphitic nitrogen doping. Here, we synthesize triaza[5]triangulene on Au(111) by cyclodehydrogenation, and its derivatives by cleaving C−N bonds. Bond-resolved scanning tunneling microscopy and scanning tunneling spectroscopy provided detailed structural information and evidence for open-shell singlet ground state. The antiferromagnetic arrangement of the spins in positively doped triaza[5]triangulene was further confirmed by density function theory calculations. The key aspect of triangulenes with multiple graphitic nitrogen is the extra pz electrons composing the π orbitals, favoring charge transfer to the substrate and changing their low-energy excitations. Our findings pave the way for the exploration of exotic low-dimensional quantum ph

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: on-surface synthesis, Triaza[5]triangulene, scanning tunneling microscopy, scanning tunneling spectroscopy

刊行年月日: 2024-11-04

出版者: Wiley

掲載誌:

• Angewandte Chemie International Edition (ISSN: 14337851) vol. 63 issue. 45

研究助成金:

• Japan Society for the Promotion of Science 22H00285
• Japan Society for the Promotion of Science 22H02067
• Japan Society for the Promotion of Science 20H05863
• Japan Society for the Promotion of Science 24K01576
• Research Council of Finland 346824

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/anie.202411893

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更新時刻: 2024-10-29 16:30:37 +0900

MDRでの公開時刻: 2024-10-29 16:30:37 +0900