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Título : Pressure-Induced Conductivity in a Neutral Nonplanar Spin- Localized Radical
Autor : Souto Salom, Manuel; Blasi, Davide; Ratera Bastardas, Immaculada; Rovira Angulo, Concepció; Veciana Miró, Jaume
Fecha de publicación : 14-sep-2016
Editor: American Chemical Society
Citación : Journal of the American Chemical Society 138(36): 11517–11525 (2016)
Resumen: There is a growing interest in the development of single-component molecular conductors based on neutral organic radicals that are mainly formed by delocalized planar radicals, such as phenalenyl or thiazolyl radicals. However, there are no examples of systems based on nonplanar and spin-localized C-centered radicals exhibiting electrical conductivity due to their large Coulomb energy (U) repulsion and narrow electronic bandwidth (W) that give rise to a Mott insulator behavior. Here we present a new type of nonplanar neutral radical conductor attained by linking a tetrathiafulvalene (TTF) donor unit to a neutral polychlorotriphenylmethyl radical (PTM) with the important feature that the TTF unit enhances the overlap between the radical molecules as a consequence of short intermolecular S···S interactions. This system becomes semiconducting upon the application of high pressure thanks to increased electronic bandwidth and charge reorganization opening the way to develop a new family of neutral radical conductors.
Descripción : Souto, Manuel et al.
Versión del editor: http://dx.doi.org/10.1021/jacs.6b02888
URI : http://hdl.handle.net/10261/137225
DOI: 10.1021/jacs.6b02888
ISSN: 0002-7863
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