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.
Static and dynamic features of a helical hexapeptide chemisorbed on a gold surface
FORMAGGIO, FERNANDO;TONIOLO, CLAUDIO;
2006
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
