Topological Defect-Induced Magnetism in a Nanographene

Mishra S, Beyer D, Berger R, Liu J, Groning O, Urgel JI, Mullen K, Ruffieux P, Feng X, Fasel R (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of the American Chemical Society American Chemical Society

Book Volume: 142

Pages Range: 1147-1152

Journal Issue: 3

DOI: 10.1021/jacs.9b09212

Abstract

The on-surface reactions of 10-bromo-10′-(2,6-dimethylphenyl)-9,9′-bianthracene on Au(111) have been investigated by scanning tunneling microscopy and spectroscopy, complemented by theoretical calculations. The reactions afford the synthesis of two open-shell nanographenes (1a and 1b) exhibiting different scenarios of all-carbon magnetism. 1a, an all-benzenoid nanographene with triangulene-like termini, contains a high proportion of zigzag edges which endows it with a low frontier gap 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 non-benzenoid topological defect, which alters the bond connectivity in the hexagonal lattice, results in a non-Kekulé nanographene with an unpaired spin, which is detected as a Kondo resonance.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa) / Swiss Federal Laboratories for Materials Science & Technology CH Switzerland (CH) Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research DE Germany (DE)

How to cite

APA:

Mishra, S., Beyer, D., Berger, R., Liu, J., Groning, O., Urgel, J.I.,... Fasel, R. (2020). Topological Defect-Induced Magnetism in a Nanographene. Journal of the American Chemical Society, 142(3), 1147-1152. https://doi.org/10.1021/jacs.9b09212

MLA:

Mishra, Shantanu, et al. "Topological Defect-Induced Magnetism in a Nanographene." Journal of the American Chemical Society 142.3 (2020): 1147-1152.

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