The role of topology in organic molecules: origin and comparison of the radical character in linear and cyclic oligoacenes and related oligomers
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Título: | The role of topology in organic molecules: origin and comparison of the radical character in linear and cyclic oligoacenes and related oligomers |
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Autor/es: | Pérez-Guardiola, Andrés | Sandoval-Salinas, María Eugenia | Casanova, David | San-Fabián, Emilio | 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: | Oligoacenes | Cyclacenes | Bi- or poly-radicals | Fractional orbital occupation | FT-DFT | RAS-SF |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 8-feb-2018 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | Physical Chemistry Chemical Physics. 2018, 20: 7112-7124. doi:10.1039/C8CP00135A |
Resumen: | We discuss the nature of electron-correlation effects in carbon nanorings and nanobelts using an analysis tool known as fractional occupation number weighted electron density (ρFOD) and the RAS-SF method, revealing for the first time significant differences in static correlation effects depending on how the rings (i.e. chemical units) are fused and/or connected until closing the loop. We choose to study in detail linear and cyclic oligoacene molecules of increasing size, and relate the emerging differences with the difficulties for the synthesis of the latter due to their radicaloid character. We finally explore how minor structural modifications of the cyclic forms can alter these results, showing the potential use of these systems as molecular templates for the growth of well-shaped carbon nanotubes as well as the usefulness of theoretical tools for molecular design. |
Patrocinador/es: | A. J. P. J. and J. C. S. G acknowledge the “Ministerio de Economa y Competitividad” of Spain and the “European Regional Development Fund” through the project CTQ2014-55073-P, and E. S. F. M. through the project FIS2015-64222-C2-2-P. D. C. is thankful to Eusko Jaurlaritza and the Spanish Government MINECO/FEDER (projects IT588-13 and CTQ2016-80955). M. E. S.-S. acknowledges CONACyT-México for a PhD fellowship (ref. 591700). |
URI: | http://hdl.handle.net/10045/74130 |
ISSN: | 1463-9076 (Print) | 1463-9084 (Online) |
DOI: | 10.1039/C8CP00135A |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © the Owner Societies 2018 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1039/C8CP00135A |
Aparece en las colecciones: | INV - QC - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2018_Perez-Guardiola_etal_PCCP_final.pdf | Versión final (acceso restringido) | 3,77 MB | Adobe PDF | Abrir Solicitar una copia |
2018_Perez-Guardiola_etal_PCCP_accepted.pdf | Accepted Manuscript (acceso abierto) | 2,59 MB | Adobe PDF | Abrir Vista previa |
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