Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Moreno, César, Diaz de Cerio, Xabier, Vilas-Varela, Manuel, Tenorio, Maria, Sarasola, Ane, Brandbyge, Mads, Peña, Diego, Garcia-Lekue, Aran, Mugarza, Aitor
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
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
_version_ 1785033379982344192
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
work_keys_str_mv AT morenocesar molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT diazdecerioxabier molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT vilasvarelamanuel molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT tenoriomaria molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT sarasolaane molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT brandbygemads molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT penadiego molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT garcialekuearan molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene
AT mugarzaaitor molecularbridgeengineeringfortuningquantumelectronictransportandanisotropyinnanoporousgraphene