Studying physisorption processes and molecular friction of cycloparaphenylene molecules on graphene nano-sized flakes: role of π⋯π and CH⋯π interactions
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Título: | Studying physisorption processes and molecular friction of cycloparaphenylene molecules on graphene nano-sized flakes: role of π⋯π and CH⋯π interactions |
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Autor/es: | Pérez-Guardiola, Andrés | Pérez-Jiménez, Ángel J. | Sancho-Garcia, Juan-Carlos |
Grupo/s de investigación o GITE: | Química Cuántica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física |
Palabras clave: | Physisorption processes | Molecular friction | Cycloparaphenylene molecules | Graphene nano-sized flakes |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 30-may-2017 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | Molecular Systems Design & Engineering. 2017, 2: 253-262. doi:10.1039/c7me00024c |
Resumen: | We theoretically study, by means of dispersion-corrected and cost-effective methods, the strength of non-covalent interactions between cyclic organic nanorings (i.e. [8]cycloparaphenylene molecule) and nano-sized (e.g. C96H24) graphene flakes acting as substrates. Both CH⋯π and π⋯π driven interactions are investigated, according to the relative orientation between the two weakly interacting monomers, whose potential energy profiles are accurately calculated in both cases. These configurations provide different physisorption curves, with the CH⋯π interaction leading to a larger well depth, and are found to slightly depend on edge effects of the nano-sized graphene flakes. Additionally, we fit the energy profiles to a compact (analytical) potential function, and study the atomic-scale friction between the molecule and the surface in the search of mechanisms for new molecular machines. |
Patrocinador/es: | This work is supported by the “Ministerio de Economía y Competitividad” of Spain and the “European Regional Development Fund” through project CTQ2014-55073-P. |
URI: | http://hdl.handle.net/10045/69050 |
ISSN: | 2058-9689 |
DOI: | 10.1039/c7me00024c |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © The Royal Society of Chemistry 2017 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1039/c7me00024c |
Aparece en las colecciones: | INV - QC - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2017_Perez-Guardiola_etal_MolSystDesEng_final.pdf | Versión final (acceso restringido) | 1,99 MB | Adobe PDF | Abrir Solicitar una copia |
2017_Perez-Guardiola_etal_MolSystDesEng_revised.pdf | Versión revisada (acceso abierto) | 3,28 MB | Adobe PDF | Abrir Vista previa |
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