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STM and OFT Study of 20 Self-Assembled Molecular Nanostructures on Surfaces

Gatti, Riccardo (2014). STM and OFT Study of 20 Self-Assembled Molecular Nanostructures on Surfaces Mémoire. Québec, Université du Québec, Institut national de la recherche scientifique, Maîtrise en sciences de l'énergie et des matériaux, 197 p.

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Résumé

The self-assembly of organic molecules was investigated on surfaces at the liquid-solid interface with scanning tunneling microscopy (STM), a technique that allows real-space imaging of single molecules with sub-nm resolution. Combining the experimental data with density functional theory (DFT) calculations provides insight in the nature of the weak intermolecular bonds involved in the lateral stabilization of the investigated systems. Surface polymerization of the assembled structures was also attempted, an important step towards practical applications thanks to the higher stability and better electronic properties of the polymerized structures. Self-assembly is a powerful technique for the fabrication of organic thin layers and the bottom-up nanopatterning of surfaces. This work describes fundamental aspects of self-assembly at the sub-molecular scale. Despite being important in small-molecule devices, much still has to be learned about this fascinating phenomenon, especially in terms of rationally controlling the assembly. This works contributes to the basic understanding of molecular self-assembly.

Type de document: Mémoire
Directeur de mémoire/thèse: Rosei, Federico
Mots-clés libres: Nanostructures; molécules organiques;
Centre: Centre Énergie Matériaux Télécommunications
Date de dépôt: 23 sept. 2014 20:48
Dernière modification: 18 nov. 2015 19:56
URI: http://espace.inrs.ca/id/eprint/2372

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