ArticleNational science review2025
Magnetic exchange interaction between unpaired π- and d-electrons in nanographene-metal coordination complexes.
Article in National science review, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- UniMR: A Plug-and-Play Framework of Automated Molecular Recognition for Scanning Tunneling Microscopy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- TailoringAngewandte Chemie (International ed. in English) · 2025Article
- On-Surface Synthesis of a Large-Scale 2D MOF with Competing π-d Ferromagnetic/Antiferromagnetic Order.Journal of the American Chemical Society · 2025Article
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18 authors.
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Abstract
The combination of open-shell nanographenes (NGs) and magnetic transition metals holds great promise for generating various new quantum phases applicable in spintronics and quantum information technologies. However, a crucial aspect in accomplishing this is to comprehend the magnetic exchange interactions between unpaired π- and d-electrons, a topic that has been seldom addressed. In this study, we focus on magnetic π-d exchange interactions between open-shell NGs and a magnetic coordination center of Fe or Co by employing scanning tunneling microscopy and spectroscopy. We synthesize two sets of NG-metal coordination complexes on a Au(111) substrate, secured by coordination bonds of carboxyl acid-Fe (Co). Through analysis of the excitation spectra, we observe a characteristic exchange coupling of 9 meV (5 meV) between the unpaired π-electron and the Fe (Co) d-shell electrons. Our experimental findings are qualitatively in agreement with multiconfigurational quantum chemistry calculations. This work provides evidence that a substantial magnetic exchange coupling can be achieved and engineered in metal-organic coordination systems, paving the way for designing and customizing extended radical metal-organic frameworks with precisely tailored magnetic properties.
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