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Title: Two-Leg Molecular Ladders Formed by Hierarchical Self-Assembly of an Organic Radical
Authors: Crivillers, Nuria ×
Furukawa, Shuhei
Minoia, Andrea
Heyen, An Ver
Mas-Torrent, Marta
Sporer, Christian
Linares, Mathieu
Volodin, Alexander
Van Haesendonck, Christian
Van der Auweraer, Mark
Lazzaroni, Roberto
De Feyter, Steven
Veciana, Jaume
Rovira, Concepcio #
Issue Date: May-2009
Publisher: American Chemical Society
Series Title: Journal of the American Chemical Society vol:131 issue:17 pages:6246-6252
Abstract: The supramolecular organization of a new polychlorotriphenyl (PTM) radical bearing three long alkyl chains has been studied by scanning tunneling microscopy (STM) at the liquid-solid interface. This radical hierarchically self-assembles on graphite forming head-to-head dimers that organize in rows following an interesting spin-containing two-leg molecular ladder topology, in which the alkyl chains determine the space between the radical rows and act as diamagnetic barriers. In addition, these double-rows also self-assemble three-dimensionally, leading to a multilayer organization which is still influenced by the HOPG substrate symmetry. The observed nanostructures are sustained by different intermolecular interactions such as Cl center dot center dot center dot Cl, Cl center dot center dot center dot Ph, pi-pi, van der Waals, and CH center dot center dot center dot pi interactions. Theoretical calculations were used to model the observed assemblies, and the results were in complete agreement with the experimental data. Remarkably, atomic force microscopy (AFM) studies confirmed that this tendency to form double rows composed by the PTM magnetic heads surrounded by the alkyl chains is maintained after the complete evaporation of the solvent. The electrochemical and magnetic properties of these PTM nanostructures were also demonstrated.
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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