Collective All-Carbon Magnetism in Triangulene Dimers
Mishra S, Beyer D, Eimre K, Ortiz R, Fernandez-Rossier J, Berger R, Groening O, Pignedoli CA, Fasel R, Feng X, Ruffieux P (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 59
Pages Range: 12041-12047
Journal Issue: 29
Abstract
Triangular zigzag nanographenes, such as triangulene and its π-extended homologues, have received widespread attention as organic nanomagnets for molecular spintronics, and may serve as building blocks for high-spin networks with long-range magnetic order, which are of immense fundamental and technological relevance. As a first step towards these lines, we present the on-surface synthesis and a proof-of-principle experimental study of magnetism in covalently bonded triangulene dimers. On-surface reactions of rationally designed precursor molecules on Au(111) lead to the selective formation of triangulene dimers in which the triangulene units are either directly connected through their minority sublattice atoms, or are separated via a 1,4-phenylene spacer. The chemical structures of the dimers have been characterized by bond-resolved scanning tunneling microscopy. Scanning tunneling spectroscopy and inelastic electron tunneling spectroscopy measurements reveal collective singlet–triplet spin excitations in the dimers, demonstrating efficient intertriangulene magnetic coupling.
Involved external institutions
Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) / Swiss Federal Laboratories for Materials Science & Technology
Switzerland (CH)
Technische Universität Dresden
Germany (DE)
University of Alicante / Universidad de Alicante / Universitat d'Alacant
Spain (ES)
INL - International Iberian Nanotechnology Laboratory
Portugal (PT)
Switzerland (CH)
Technische Universität Dresden
Germany (DE)
University of Alicante / Universidad de Alicante / Universitat d'Alacant
Spain (ES)
INL - International Iberian Nanotechnology Laboratory
Portugal (PT)
How to cite
APA:
Mishra, S., Beyer, D., Eimre, K., Ortiz, R., Fernandez-Rossier, J., Berger, R.,... Ruffieux, P. (2020). Collective All-Carbon Magnetism in Triangulene Dimers. Angewandte Chemie International Edition, 59(29), 12041-12047. https://doi.org/10.1002/anie.202002687
MLA:
Mishra, Shantanu, et al. "Collective All-Carbon Magnetism in Triangulene Dimers." Angewandte Chemie International Edition 59.29 (2020): 12041-12047.
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