The rich topography of a self-assembled monolayer formed by a helical hexapeptide chemisorbed on a gold surface has been investigated by scanning tunneling microscopy under ultra high vacuum conditions (UHV-STM). STM experiments revealed a complex morphology of the peptide layer, showing nanometric-ordered domains lying on the gold surface (stripes) and a predominant phase at high local peptide concentration (holes). Diffusion of gold-peptide adsorbates on the gold surface, leading to coalescence of the hole structures at room temperature, was also detected. (c) 2005 Elsevier B.V. All rights reserved.
Static and dynamic features of a helical hexapeptide chemisorbed on a gold surface
MARLETTA, Giovanni
2006-01-01
Abstract
The rich topography of a self-assembled monolayer formed by a helical hexapeptide chemisorbed on a gold surface has been investigated by scanning tunneling microscopy under ultra high vacuum conditions (UHV-STM). STM experiments revealed a complex morphology of the peptide layer, showing nanometric-ordered domains lying on the gold surface (stripes) and a predominant phase at high local peptide concentration (holes). Diffusion of gold-peptide adsorbates on the gold surface, leading to coalescence of the hole structures at room temperature, was also detected. (c) 2005 Elsevier B.V. All rights reserved.File in questo prodotto:
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