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Molecular Bridge Engineering for Tuning Quantum Electronic Transport and Anisotropy in Nanoporous Graphene
[Image: see text] Recent advances on surface-assisted synthesis have demonstrated that arrays of nanometer wide graphene nanoribbons can be laterally coupled with atomic precision to give rise to a highly anisotropic nanoporous graphene structure. Electronically, this graphene nanoarchitecture can b...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10141406/ https://www.ncbi.nlm.nih.gov/pubmed/36988648 http://dx.doi.org/10.1021/jacs.3c00173 |
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author | Moreno, César Diaz de Cerio, Xabier Vilas-Varela, Manuel Tenorio, Maria Sarasola, Ane Brandbyge, Mads Peña, Diego Garcia-Lekue, Aran Mugarza, Aitor |
author_facet | Moreno, César Diaz de Cerio, Xabier Vilas-Varela, Manuel Tenorio, Maria Sarasola, Ane Brandbyge, Mads Peña, Diego Garcia-Lekue, Aran Mugarza, Aitor |
author_sort | Moreno, César |
collection | PubMed |
description | [Image: see text] Recent advances on surface-assisted synthesis have demonstrated that arrays of nanometer wide graphene nanoribbons can be laterally coupled with atomic precision to give rise to a highly anisotropic nanoporous graphene structure. Electronically, this graphene nanoarchitecture can be conceived as a set of weakly coupled semiconducting 1D nanochannels with electron propagation characterized by substantial interchannel quantum interferences. Here, we report the synthesis of a new nanoporous graphene structure where the interribbon electronic coupling can be controlled by the different degrees of freedom provided by phenylene bridges that couple the conducting channels. This versatility arises from the multiplicity of phenylene cross-coupling configurations, which provides a robust chemical knob, and from the interphenyl twist angle that acts as a fine-tunable knob. The twist angle is significantly altered by the interaction with the substrate, as confirmed by a combined bond-resolved scanning tunneling microscopy (STM) and ab initio analysis, and should accordingly be addressable by other external stimuli. Electron propagation simulations demonstrate the capability of either switching on/off or modulating the interribbon coupling by the corresponding use of the chemical or the conformational knob. Molecular bridges therefore emerge as efficient tools to engineer quantum transport and anisotropy in carbon-based 2D nanoarchitectures. |
format | Online Article Text |
id | pubmed-10141406 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-101414062023-04-29 Molecular Bridge Engineering for Tuning Quantum Electronic Transport and Anisotropy in Nanoporous Graphene Moreno, César Diaz de Cerio, Xabier Vilas-Varela, Manuel Tenorio, Maria Sarasola, Ane Brandbyge, Mads Peña, Diego Garcia-Lekue, Aran Mugarza, Aitor J Am Chem Soc [Image: see text] Recent advances on surface-assisted synthesis have demonstrated that arrays of nanometer wide graphene nanoribbons can be laterally coupled with atomic precision to give rise to a highly anisotropic nanoporous graphene structure. Electronically, this graphene nanoarchitecture can be conceived as a set of weakly coupled semiconducting 1D nanochannels with electron propagation characterized by substantial interchannel quantum interferences. Here, we report the synthesis of a new nanoporous graphene structure where the interribbon electronic coupling can be controlled by the different degrees of freedom provided by phenylene bridges that couple the conducting channels. This versatility arises from the multiplicity of phenylene cross-coupling configurations, which provides a robust chemical knob, and from the interphenyl twist angle that acts as a fine-tunable knob. The twist angle is significantly altered by the interaction with the substrate, as confirmed by a combined bond-resolved scanning tunneling microscopy (STM) and ab initio analysis, and should accordingly be addressable by other external stimuli. Electron propagation simulations demonstrate the capability of either switching on/off or modulating the interribbon coupling by the corresponding use of the chemical or the conformational knob. Molecular bridges therefore emerge as efficient tools to engineer quantum transport and anisotropy in carbon-based 2D nanoarchitectures. American Chemical Society 2023-03-29 /pmc/articles/PMC10141406/ /pubmed/36988648 http://dx.doi.org/10.1021/jacs.3c00173 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Moreno, César Diaz de Cerio, Xabier Vilas-Varela, Manuel Tenorio, Maria Sarasola, Ane Brandbyge, Mads Peña, Diego Garcia-Lekue, Aran Mugarza, Aitor Molecular Bridge Engineering for Tuning Quantum Electronic Transport and Anisotropy in Nanoporous Graphene |
title | Molecular Bridge Engineering
for Tuning Quantum Electronic
Transport and Anisotropy in Nanoporous Graphene |
title_full | Molecular Bridge Engineering
for Tuning Quantum Electronic
Transport and Anisotropy in Nanoporous Graphene |
title_fullStr | Molecular Bridge Engineering
for Tuning Quantum Electronic
Transport and Anisotropy in Nanoporous Graphene |
title_full_unstemmed | Molecular Bridge Engineering
for Tuning Quantum Electronic
Transport and Anisotropy in Nanoporous Graphene |
title_short | Molecular Bridge Engineering
for Tuning Quantum Electronic
Transport and Anisotropy in Nanoporous Graphene |
title_sort | molecular bridge engineering
for tuning quantum electronic
transport and anisotropy in nanoporous graphene |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10141406/ https://www.ncbi.nlm.nih.gov/pubmed/36988648 http://dx.doi.org/10.1021/jacs.3c00173 |
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