Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces

Kolmer M, Steiner AK, Izydorczyk I, Ko W, Engelund M, Szymonski M, Li AP, Amsharov K (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Science American Association for the Advancement of Science

Abstract

Atomically precise graphene nanoribbons (GNRs) attract great interest because of their highly tunable electronic, optical, and transport properties. However, on-surface synthesis of GNRs is typically based on metal-surface assisted chemical reactions, where metallic substrates strongly screen their designer electronic properties and limit further applications. Here, we present an on-surface synthesis approach to forming atomically precise GNRs directly on semiconducting metal oxide surfaces. The thermally triggered multistep transformations preprogrammed in our precursors' design rely on highly selective and sequential activations of C-Br, C-F bonds and cyclodehydrogenation. The formation of planar armchair GNRs terminated by well-defined zigzag ends is confirmed by scanning tunneling microscopy and spectroscopy, which also reveal weak interaction between GNRs and the rutile TiO2 substrate.

Authors with CRIS profile

Ann-Kristin Steiner Lehrstuhl für Organische Chemie II Konstantin Amsharov Lehrstuhl für Organische Chemie II

Involved external institutions

Oak Ridge National Laboratory

United States (USA) (US) Jagiellonian University / Uniwersytet Jagielloński (UJ)

Poland (PL) University of Tennessee (UTK)

United States (USA) (US)

How to cite

APA:

Kolmer, M., Steiner, A.-K., Izydorczyk, I., Ko, W., Engelund, M., Szymonski, M.,... Amsharov, K. (2020). Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces. Science. https://dx.doi.org/10.1126/science.abb8880

MLA:

Kolmer, M., et al. "Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces." Science (2020).

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