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1.
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8 p, 7.7 MB |
Molecular Bridge Engineering for Tuning Quantum Electronic Transport and Anisotropy in Nanoporous Graphene
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Moreno, Cesar (Institut Català de Nanociència i Nanotecnologia) ;
Diaz de Cerio, Xabier (Donostia International Physics Center) ;
Vilas-Varela, Manuel (Universidade de Santiago de Compostela) ;
Tenorio, María José (Institut Català de Nanociència i Nanotecnologia) ;
Sarasola, Ane (Universidad del País Vasco) ;
Brandbyge, Mads (Technical University of Denmark) ;
Peña, Diego (Universidade de Santiago de Compostela) ;
Garcia-Lekue, Aran (Ikerbasque) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
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. [...]
2023 -  10.1021/jacs.3c00173
Journal of the American Chemical Society, Vol. 145, Issue 16 (April 2023) , p. 8988-8995
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2.
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30 p, 2.2 MB |
Stabilizing edge fluorination in graphene nanoribbons
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Panighel, Mirco (Institut Català de Nanociència i Nanotecnologia) ;
Peña, Diego (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Brandimarte Mendonça, Pedro (Donostia International Physics Center) ;
Moreno, Cesar (Institut Català de Nanociència i Nanotecnologia) ;
Garcia-Lekue, Aran. (Ikerbasque) ;
Vilas-Varela, Manuel (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Rey, Dulce (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Sauthier, Guillaume (Institut Català de Nanociència i Nanotecnologia) ;
Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ;
Peña, Diego (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
The on-surface synthesis of edge-functionalized graphene nanoribbons (GNRs) is challenged by the stability of the functional groups throughout the thermal reaction steps of the synthetic pathway. Edge fluorination is a particularly critical case in which the interaction with the catalytic substrate and intermediate products can induce the complete cleavage of the otherwise strong C-F bonds before the formation of the GNR. [...]
2020 - 10.1021/acsnano.0c01837
ACS nano, Vol. 14, issue 9 (Sep. 2020) , p. 11120-11129
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3.
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21 p, 2.4 MB |
Band Depopulation of Graphene Nanoribbons Induced by Chemical Gating with Amino Groups
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Li, Jingcheng (CIC Nanogune BRTA) ;
Brandimarte Mendonça, Pedro (Donostia International Physics Center) ;
Vilas Varela, Manuel (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Merino Díez, Nestor (CIC Nanogune BRTA) ;
Moreno, Cesar (Institut Català de Nanociència i Nanotecnologia) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ;
Sáez Mollejo, Jaime (Donostia International Physics Center) ;
Sanchez-Portal, Daniel (Donostia International Physics Center) ;
Garcia de Oteyza, Dimas (Donostia International Physics Center) ;
Corso, Martina (Donostia International Physics Center) ;
Garcia-Lekue, Aran (Donostia International Physics Center) ;
Peña, Diego (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Pascual, José I. (CIC Nanogune BRTA)
The electronic properties of graphene nanoribbons (GNRs) can be precisely tuned by chemical doping. Here we demonstrate that amino (NH) functional groups attached at the edges of chiral GNRs (chGNRs) can efficiently gate the chGNRs and lead to the valence band (VB) depopulation on a metallic surface. [...]
2020 - 10.1021/acsnano.9b08162
ACS nano, Vol. 14, Issue 2 (February 2020) , p. 1895-1901
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4.
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6 p, 509.4 KB |
Spin-dependent electron scattering at graphene edges on Ni(111)
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Garcia-Lekue, Aran (Donostia International Physics Center) ;
Balashov, Timofey (Institut Català de Nanociència i Nanotecnologia) ;
Olle, M. (Institut Català de Nanociència i Nanotecnologia) ;
Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ;
Arnau Pino, Andrés (IKERBASQUE) ;
Gambardella, Pietro (Institut Català de Nanociència i Nanotecnologia) ;
Sanchez-Portal, Daniel (CSIC-UPV - Centro de Física de Materiales (CFM)) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
We investigate the scattering of surface electrons by the edges of graphene islands grown on Ni(111). By combining local tunneling spectroscopy and ab initio electronic structure calculations we find that the hybridization between graphene and Ni states results in strongly reflecting graphene edges. [...]
2014 - 10.1103/PhysRevLett.112.066802
Physical review letters, Vol. 112, issue 6 (Feb. 2014) , art. 66802
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5.
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15 p, 11.6 MB |
A tunable electronic beam splitter realized with crossed graphene nanoribbons
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Brandimarte Mendonça, Pedro (Centro de Física de Materiales) ;
Engelund, Mads (Centro de Física de Materiales) ;
Papior, Nick (Institut Català de Nanociència i Nanotecnologia) ;
Garcia-Lekue, Aran (Basque Foundation for Science) ;
Frederiksen, Thomas (Basque Foundation for Science) ;
Sanchez-Portal, Daniel (Donostia International Physics Center)
Graphene nanoribbons (GNRs) are promising components in future nanoelectronics due to the large mobility of graphene electrons and their tunable electronic band gap in combination with recent experimental developments of on-surface chemistry strategies for their growth. [...]
2017 - 10.1063/1.4974895
Journal of chemical physics, Vol. 146, Issue 9 (March 2017) , art. 92318
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6.
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17 p, 3.1 MB |
Symmetry forbidden morphologies and domain boundaries in nanoscale graphene islands
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Parreiras, Sofia de Oliveira (Institut Català de Nanociència i Nanotecnologia) ;
Gastaldo, Michele (Institut Català de Nanociència i Nanotecnologia) ;
Moreno, Cesar (Institut Català de Nanociència i Nanotecnologia) ;
Martins, M. D. (Centro de Desenvolvimento da Tecnologia Nuclear (CDTN)) ;
Garcia-Lekue, Aran (Basque Foundation for Science) ;
Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ;
Paniago, R. (Universidade Federal de Minas Gerais. Departamento de Física) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
The synthesis of graphene nanoislands with tailored quantum properties requires an atomic control of the morphology and crystal structure. As one reduces their size down to the nanometer scale, domain boundary and edge energetics, as well as nucleation and growth mechanisms impose different stability and kinetic landscape from that at the microscale. [...]
2017 - 10.1088/2053-1583/aa70fa
2D Materials, Vol. 4, Núm. 2 (May 2017) , art. 25104
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7.
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11 p, 967.1 KB |
Bottom-up synthesis of multifunctional nanoporous graphene
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Moreno, Cesar (Institut Català de Nanociència i Nanotecnologia) ;
Vilas Varela, Manuel (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Kretz, Bernhard (Donostia International Physics Center) ;
Garcia-Lekue, Aran (Basque Foundation for Science) ;
Costache, Marius Vasile. (Institut Català de Nanociència i Nanotecnologia) ;
Paradinas Aranjuelo, Marcos (Institut Català de Nanociència i Nanotecnologia) ;
Panighel, Mirco (Institut Català de Nanociència i Nanotecnologia) ;
Ceballos, Gustavo (Institut Català de Nanociència i Nanotecnologia) ;
Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ;
Peña, Diego (Universidade de Santiago de Compostela. Departamento de Química Orgánica) ;
Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia)
Nanosize pores can turn semimetallic graphene into a semiconductor and, from being impermeable, into the most efficient molecular-sieve membrane. However, scaling the pores down to the nanometer, while fulfilling the tight structural constraints imposed by applications, represents an enormous challenge for present top-down strategies. [...]
2018 - 10.1126/science.aar2009
Science, Vol. 360, Issue 6385 (April 2018) , p. 199-203
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