Data di Pubblicazione:
2005
Abstract:
The adsorption of the amino acid, (S)-glutamic acid, was investigated on Ag{110} as a function of coverage
and adsorption temperature using the techniques of scanning tunneling microscopy, low energy electron
diffraction, and reflection absorption infrared spectroscopy. In the monolayer, (S)-glutamic acid was found
to adsorb predominantly in the anionic glutamate form. Several discrete ordered adlayer structures were
observed depending on preparation conditions. In addition, (S)-glutamic acid was found to induce both oneand
two-dimensional faceting of the Ag{110} surface. In some cases, evidence was found that the 2-D
faceting involved the creation of a chiral facet distribution. A comparison is made of the Ag/(S)-glutamic
acid system with analogous studies of amino acids on Cu.
and adsorption temperature using the techniques of scanning tunneling microscopy, low energy electron
diffraction, and reflection absorption infrared spectroscopy. In the monolayer, (S)-glutamic acid was found
to adsorb predominantly in the anionic glutamate form. Several discrete ordered adlayer structures were
observed depending on preparation conditions. In addition, (S)-glutamic acid was found to induce both oneand
two-dimensional faceting of the Ag{110} surface. In some cases, evidence was found that the 2-D
faceting involved the creation of a chiral facet distribution. A comparison is made of the Ag/(S)-glutamic
acid system with analogous studies of amino acids on Cu.
Tipologia CRIS:
01.01 Articolo in rivista
Keywords:
aminoacids; surfaces; adsorption; selfassembling
Elenco autori:
Vattuone, Luca; Rocca, Mario; Savio, Letizia
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