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9 results on '"Lusuan, A"'

1. Synthesis of corrugated C-based nanostructures by Br-corannulene oligomerization

Author

Smerieri, Marco, Pís, Igor, Ferrighi, Lara, Nappini, Silvia, Lusuan, Angelique, Vattuone, Luca, Vaghi, Luca, Papagni, Antonio, Magnano, Elena, Di Valentin, Cristiana, Bondino, Federica, Savio, Letizia, Smerieri, M, Píš, I, Ferrighi, L, Nappini, S, Lusuan, A, Vattuone, L, Vaghi, L, Papagni, A, Magnano, E, Di Valentin, C, Bondino, F, and Savio, L

Subjects
corrugated, Nanostructure, Materials science, General Physics and Astronomy, 02 engineering and technology, 010402 general chemistry, DBP, 01 natural sciences, oligomerization, law.invention, chemistry.chemical_compound, law, Molecule, Physical and Theoretical Chemistry, C-based nanostructures, metal surface assisted synthesis, C-based nanostructures, corannulene, Ag(110), scanning tunneling microscopy, soft X-ray spectroscopy, density functional theory, chemistry.chemical_classification, Polymer, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Crystallography, Polymerization, chemistry, Corannulene, Network covalent bonding, Density functional theory, Br-corannulene, Scanning tunneling microscope, 0210 nano-technology
Abstract

The structure and electronic properties of carbon-based nanostructures obtained by metal surface assisted synthesis is highly dependent on the nature of the precursor molecule. Here, we report on a combined scanning tunneling microscopy, soft X-ray spectroscopy and density functional theory investigation on the surface assisted polymerization of Br-corannulene at Ag(110) and on the possibility of building a mesh of ?-conjugated polymers starting from buckyball shaped molecules. Indeed, the corannulene units form one-molecule-wide ribbons in which the natural concavity of the precursor molecule is maintained. These C-based nanostructures are corrugated and merge into a covalent network on the surface.

Published
2018

2. Enhanced Chemical Reactivity of Pristine Graphene Interacting Strongly with a Substrate: Chemisorbed Carbon Monoxide on Graphene/Nickel(1 1 1)

Author

Angelique Lusuan, Mario Rocca, Giovanni Carraro, Gianangelo Bracco, Luca Vattuone, Marco Smerieri, Jagriti Pal, Letizia Savio, and Edvige Celasco

Subjects
Vibrational spectroscopy, Materials science, Graphene, Organic Chemistry, Inorganic chemistry, Chemisorption, chemistry.chemical_element, Substrate (chemistry), Infrared spectroscopy, Photochemistry, Surface chemistry, Catalysis, law.invention, Inorganic Chemistry, Nickel, chemistry.chemical_compound, chemistry, law, Physical and Theoretical Chemistry, Carbon monoxide
Abstract

Graphene is usually considered a chemically inert material. Theoretical studies of CO adsorption on free-standing graphene predict quite low adsorption energies (

Published
2015

3. Synthesis of graphene nanoribbons with a defined mixed edge-site sequence by surface assisted polymerization of (1,6)-dibromopyrene on Ag(110)

Author

Silvia Nappini, Angelique Lusuan, Stefano Agnoli, Luca Vaghi, Antonio Papagni, Igor Píš, Mattia Cattelan, Cristiana Di Valentin, Lara Ferrighi, Marco Smerieri, Letizia Savio, Federica Bondino, Elena Magnano, Smerieri, M, Píš, I, Ferrighi, L, Nappini, S, Lusuan, A, DI VALENTIN, C, Vaghi, L, Papagni, A, Cattelan, M, Agnoli, S, Magnano, E, Bondino, F, and Savio, L

Subjects
Coupling, Nanostructure, Materials science, Graphene nanoribbons, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, law.invention, chemistry.chemical_compound, Polymerization, chemistry, surface assisted polymeriziation, Chemical physics, law, Pyrene, General Materials Science, Density functional theory, Dehydrogenation, Materials Science (all), Scanning tunneling microscope, 0210 nano-technology
Abstract

By a combination of scanning tunneling microscopy, X-ray spectroscopic techniques and density functional theory calculations, we prove the formation of extended patterns of parallel, graphene nanoribbons with alternate zig-zag and armchair edges and selected width by surface-assisted Ullmann coupling polymerization and dehydrogenation of 1,6-dibromopyrene (C16H8Br2). Besides the relevance of these nanostructures for their possible application in nanodevices, we demonstrate the peculiarity of halogenated pyrene derivatives for the formation of nanoribbons, in particular on Ag(110). These results open the possibility of tuning the shape and dimension of nanoribbons (and hence the correlated electronic properties) by choosing suitably tailored or on-purpose designed molecular precursors.

Published
2016

5. CO chemisorption at vacancies of supported graphene films: a candidate for a sensor?

Author

Mario Rocca, Luca Vattuone, Marco Smerieri, Angelique Lusuan, Giovanni Carraro, Edvige Celasco, Letizia Savio, and Jagriti Pal

Subjects
Inert, Materials science, Graphene, Intercalation (chemistry), General Physics and Astronomy, Nanotechnology, 02 engineering and technology, Substrate (electronics), 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, law.invention, Carbide, Adsorption, Chemical engineering, Chemisorption, law, sensoristic, CO adsorption, Crystallite, Physical and Theoretical Chemistry, 0210 nano-technology
Abstract

We investigate CO adsorption at single vacancies of graphene supported on Ni(111) and polycrystalline Cu. The borders of the vacancies are chemically inert but, on the reactive Ni(111) substrate, CO intercalation occurs. Adsorbed CO dissociates at 380 K, leading to carbide formation and mending of the vacancies, thus preventing their effectiveness in sensor applications.

Published
2016

6. Synthesis of graphene nanoribbons with a defined mixed edge-site sequence by surface assisted polymerization of (1,6)-dibromopyrene on Ag(110)

Author

Smerieri, M, Píš, I, Ferrighi, L, Nappini, S, Lusuan, A, DI VALENTIN, C, Vaghi, L, Papagni, A, Cattelan, M, Agnoli, S, Magnano, E, Bondino, F, Savio, L, FERRIGHI, LARA, DI VALENTIN, CRISTIANA, VAGHI, LUCA, PAPAGNI, ANTONIO, Savio, L., Smerieri, M, Píš, I, Ferrighi, L, Nappini, S, Lusuan, A, DI VALENTIN, C, Vaghi, L, Papagni, A, Cattelan, M, Agnoli, S, Magnano, E, Bondino, F, Savio, L, FERRIGHI, LARA, DI VALENTIN, CRISTIANA, VAGHI, LUCA, PAPAGNI, ANTONIO, and Savio, L.

Abstract

By a combination of scanning tunneling microscopy, X-ray spectroscopic techniques and density functional theory calculations, we prove the formation of extended patterns of parallel, graphene nanoribbons with alternate zig-zag and armchair edges and selected width by surface-assisted Ullmann coupling polymerization and dehydrogenation of 1,6-dibromopyrene (C16H8Br2). Besides the relevance of these nanostructures for their possible application in nanodevices, we demonstrate the peculiarity of halogenated pyrene derivatives for the formation of nanoribbons, in particular on Ag(110). These results open the possibility of tuning the shape and dimension of nanoribbons (and hence the correlated electronic properties) by choosing suitably tailored or on-purpose designed molecular precursors.

Published
2016

8. Synthesis of graphene nanoribbons with a defined mixed edge-site sequence by surface assisted polymerization of (1,6)-dibromopyrene on Ag(110)

Author

Smerieri, Marco, primary, Píš, Igor, additional, Ferrighi, Lara, additional, Nappini, Silvia, additional, Lusuan, Angelique, additional, Di Valentin, Cristiana, additional, Vaghi, Luca, additional, Papagni, Antonio, additional, Cattelan, Mattia, additional, Agnoli, Stefano, additional, Magnano, Elena, additional, Bondino, Federica, additional, and Savio, Letizia, additional

Published
2016
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