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Shaping Saddles into 2D Sheets: On-Surface Self-Assembly and Structural Elucidation


Woods, Joseph. Shaping Saddles into 2D Sheets: On-Surface Self-Assembly and Structural Elucidation. 2024, University of Zurich, Faculty of Science.

Abstract

Questioning how molecular topography can govern supramolecular ordering is a relatively unexplored avenue of thought and one that could lead towards new functional materials. “Carpyridines” — macrocycles fused from carbazoles and pyridines — are an underdeveloped example of a simple system bearing negative Gaussian curvature that could hold such promise. Derivatisation of these non-planar systems through peripheral functionalisation of the aromatic core has yielded supramolecular assemblies in the form of 2D sheets on surface, down to the thickness of a single molecule and with fantastic edge definition in some cases. Performing several diffractive techniques has allowed for characterisation of these macrocycles and their self-assemblies, demonstrating that the inherent saddle topography is able to restrict the rotational freedom of carpyridine monomers within columnar stacks that make up the nanosheets.

Abstract

Questioning how molecular topography can govern supramolecular ordering is a relatively unexplored avenue of thought and one that could lead towards new functional materials. “Carpyridines” — macrocycles fused from carbazoles and pyridines — are an underdeveloped example of a simple system bearing negative Gaussian curvature that could hold such promise. Derivatisation of these non-planar systems through peripheral functionalisation of the aromatic core has yielded supramolecular assemblies in the form of 2D sheets on surface, down to the thickness of a single molecule and with fantastic edge definition in some cases. Performing several diffractive techniques has allowed for characterisation of these macrocycles and their self-assemblies, demonstrating that the inherent saddle topography is able to restrict the rotational freedom of carpyridine monomers within columnar stacks that make up the nanosheets.

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Additional indexing

Item Type:Dissertation (monographical)
Referees:Rickhaus Michel, Gademann Karl, Severin Kay, Nevado Blazquez Cristina
Communities & Collections:07 Faculty of Science > Department of Chemistry
UZH Dissertations
Dewey Decimal Classification:540 Chemistry
Language:English
Place of Publication:Zürich
Date:20 March 2024
Deposited On:21 Mar 2024 15:15
Last Modified:21 May 2024 20:47
Number of Pages:473
OA Status:Green
  • Content: Published Version
  • Language: English