Carbohydrate Self-Assembly at Surfaces: STM Imaging of Sucrose Conformation and Ordering on Cu(100)
Abstract
Saccharides are ubiquitous biomolecules but little is known about their interaction with and assembly at surfaces. Combining preparative mass spectrometry with scanning tunneling microscopy, we have been able to address the conformation and self-assembly of the disaccharide sucrose on the Cu(100) surface with subunit-level imaging. By combining a multi-stage modelling approach and experimental data, we can rationalize the conformation on the surface as well as the interactions between the sucrose molecules, yielding models of the observed self-assembled patterns on the surface.
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