- Titel
- Topological defect-induced magnetism in a nanographene
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-731727
- Quellenangabe
- Journal of the American Chemical Society#Journal of the American Chemical Society
Erscheinungsjahr: 2020
Jahrgang: 142
Heft: 3
Seiten: 1147-1152
E-ISSN: 1520-5126 - Erstveröffentlichung
- 2019
- Abstract (EN)
- The on-surface reactions of 10-bromo-10'-(2,6-dimethylphenyl)-9,9'-bianthracene on Au(111) surface have been investigated by a combination of bond-resolved scanning tunneling microscopy, scanning tunneling spectroscopy, and tightbinding and mean-field Hubbard calculations. The reactions afford the synthesis of two open-shell nanographenes (1a and 1b) exhibiting different scenarios of all-carbon magnetism. 1a, an allbenzenoid nanographene with previously unreported triangulenelike termini, contains a high proportion of zigzag edges, which endows it with an exceedingly low frontier gap of 110 meV and edge-localized states. The dominant reaction product (1b) is a non-benzenoid nanographene consisting of a single pentagonal ring in a benzenoid framework. The presence of this nonbenzenoid topological defect, which alters the bond connectivity in the hexagonal lattice, results in a non-Kekulé nanographene with a spin S = ½, which is detected as a Kondo resonance. Our work provides evidence of all-carbon magnetism, and motivates the use of topological defects as structural elements toward engineering agnetism in carbon-based nanomaterials for spintronics.
- Andere Ausgabe
- Link zum Artikel der zuerst im 'Journal of the American Chemical Society' erschienen ist
DOI: 10.1021/jacs.9b09212 - Freie Schlagwörter (DE)
- Moleküle, Chemische Synthese, Magnetische Eigenschaften, Quantenmechanik, Rastertunnelmikroskopie
- Freie Schlagwörter (EN)
- Molecules, Chemical synthesis, Magnetic properties, Quantum mechanics, Scanning tunneling microscopy
- Klassifikation (DDC)
- 540
- Verlag
- American Chemical Society, Washington, DC
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft (DFG)
Erkundung von Heteroaromatischen und -antiaromatischen atompräzisen Nanographenen
ID: 391979941 - European Commission (EC)
H2020 | SGA-RIA
Graphene-based disruptive technologies
(Graphene Core 1)
ID: 696656 - European Commission (EC)
H2020 | SGA-RIA
Graphene Flagship Core Project 2
(Graphene Core 2)
ID: 785219 - European Commission (EC)
H2020 | ERC | ERC-COG
Development of Thiophene Based Conjugated Polymers in Two Dimensions
(T2DCP)
ID: 819698 - Office of Naval Research ID: N00014-18-1-2708
- Swiss National Science Foundation ID: 200020-182015
- Swiss National Science Foundation ID: IZLCZ2-170184
- Version / Begutachtungsstatus
- angenommene Version / Postprint / Autorenversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-731727
- Veröffentlichungsdatum Qucosa
- 13.01.2021
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
