Extracting dimer structures from simulations of organic-based materials using QM/MM methods
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Título: | Extracting dimer structures from simulations of organic-based materials using QM/MM methods |
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Autor/es: | 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: | QM/MM | Coronene | Tetrachlorotetracene | Dimer structure |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 28-sep-2015 |
Editor: | Elsevier |
Cita bibliográfica: | Chemical Physics. 2015, 459: 112-124. doi:10.1016/j.chemphys.2015.08.010 |
Resumen: | The functionality of weakly bound organic materials, either in Nanoelectronics or in Materials Science, is known to be strongly affected by their morphology. Theoretical predictions of the underlying structure–property relationships are frequently based on calculations performed on isolated dimers, but the optimized structure of the latter may significantly differ from experimental data even when dispersion-corrected methods are used for it. Here, we address this problem on two organic crystals, namely coronene and 5,6,11,12-tetrachlorotetracene, concluding that it is caused by the absence of the surrounding monomers present in the crystal, and that it can be efficiently cured when the dimer is embedded into a general Quantum Mechanics/Molecular Mechanics (QM/MM) geometry optimization scheme. We also investigate how the size of the MM region affects the results. These findings may be helpful for the simulation of the morphology of active materials in crystalline or glassy samples. |
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/10045/49031 |
ISSN: | 0301-0104 (Print) | 1873-4421 (Online) |
DOI: | 10.1016/j.chemphys.2015.08.010 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2015 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.chemphys.2015.08.010 |
Aparece en las colecciones: | INV - QC - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2015_Perez_Sancho_ChemPhys_final.pdf | Versión final (acceso restringido) | 5,1 MB | Adobe PDF | Abrir Solicitar una copia |
2015_Perez_Sancho_ChemPhys_accepted.pdf | Accepted Manuscript (acceso abierto) | 2,48 MB | Adobe PDF | Abrir Vista previa |
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