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

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. In this work, 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 carbon-bromine (C-Br) and carbon-fluorine (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 titanium dioxide substrate.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [6]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Friedrich Alexander Univ., Erlangen (Germany)
  3. Jagiellonian Univ., Krakow (Poland)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  5. Espeem S.A.R.L., Esch-sur-Alzette (Luxembourg)
  6. Friedrich Alexander Univ. Erlangen-Nuremberg, Erlangen (Germany); Martin-Luther-Univ. Halle-Wittenberg, Halle (Germany)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Department of the Navy, Office of Naval Research (ONR); Polish Ministry of Science and Higher Education; German Research Foundation (DFG)
OSTI Identifier:
1767838
Grant/Contract Number:  
AC05-00OR22725; N00014-16-1-3213; N00014-20-1-2302; 0341/IP3/2016/74; 182849149−SFB 953
Resource Type:
Accepted Manuscript
Journal Name:
Science
Additional Journal Information:
Journal Volume: 369; Journal Issue: 6503; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Kolmer, Marek, Steiner, Ann-Kristin, Izydorczyk, Irena, Ko, Wonhee, Engelund, Mads, Szymonski, Marek, Li, An-Ping, and Amsharov, Konstantin. Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces. United States: N. p., 2020. Web. doi:10.1126/science.abb8880.
Kolmer, Marek, Steiner, Ann-Kristin, Izydorczyk, Irena, Ko, Wonhee, Engelund, Mads, Szymonski, Marek, Li, An-Ping, & Amsharov, Konstantin. Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces. United States. https://doi.org/10.1126/science.abb8880
Kolmer, Marek, Steiner, Ann-Kristin, Izydorczyk, Irena, Ko, Wonhee, Engelund, Mads, Szymonski, Marek, Li, An-Ping, and Amsharov, Konstantin. Thu . "Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces". United States. https://doi.org/10.1126/science.abb8880. https://www.osti.gov/servlets/purl/1767838.
@article{osti_1767838,
title = {Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces},
author = {Kolmer, Marek and Steiner, Ann-Kristin and Izydorczyk, Irena and Ko, Wonhee and Engelund, Mads and Szymonski, Marek and Li, An-Ping and Amsharov, Konstantin},
abstractNote = {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. In this work, 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 carbon-bromine (C-Br) and carbon-fluorine (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 titanium dioxide substrate.},
doi = {10.1126/science.abb8880},
journal = {Science},
number = 6503,
volume = 369,
place = {United States},
year = {Thu Jun 25 00:00:00 EDT 2020},
month = {Thu Jun 25 00:00:00 EDT 2020}
}

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