Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains

The structure and dynamics of dodecanethiol and butanethiol monolayers adsorbed on Au(111) at 298 K have been followed by in situ and ex situ scanning tunneling microscopy (STM). Results show that a gaslike initial adsorption stage where monatomic deep pit clustering occurs is followed by an advance...

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Detalles Bibliográficos
Autores principales: Terán Arce, Fernando, Vela, María Elena, Salvarezza, Roberto Carlos, Arvia, Alejandro Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 1998
Materias:
Ciencias Exactas
Química
Oro
alkanethiol
scanning tunneling microscopy
dodecanethiol
butanethiol
monatomic
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85101
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85101
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Química
Oro
alkanethiol
scanning tunneling microscopy
dodecanethiol
butanethiol
monatomic
spellingShingle Ciencias Exactas
Química
Oro
alkanethiol
scanning tunneling microscopy
dodecanethiol
butanethiol
monatomic
Terán Arce, Fernando
Vela, María Elena
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains
topic_facet Ciencias Exactas
Química
Oro
alkanethiol
scanning tunneling microscopy
dodecanethiol
butanethiol
monatomic
description The structure and dynamics of dodecanethiol and butanethiol monolayers adsorbed on Au(111) at 298 K have been followed by in situ and ex situ scanning tunneling microscopy (STM). Results show that a gaslike initial adsorption stage where monatomic deep pit clustering occurs is followed by an advanced adsorption stage in which adlayer structural changes p(<i>n</i>×1) ⇒ (√3×√3)R30° ⇔ c(4×2) take place. The first change is interpreted as the motion of adsorbed molecules from fcc to hcp sites, and the second one is explained by the fluctuations of adsorbed molecules from hollow to bridge sites. The structural fluctuations at adsorbate domains occur simultaneously with fluctuations in the size of monatomic deep pits. These processes reveal the complexity of surface dynamics of alkanethiol adlayers on Au(111) at 298 K.
format Articulo
Articulo
author Terán Arce, Fernando
Vela, María Elena
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_facet Terán Arce, Fernando
Vela, María Elena
Salvarezza, Roberto Carlos
Arvia, Alejandro Jorge
author_sort Terán Arce, Fernando
title Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains
title_short Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains
title_full Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains
title_fullStr Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains
title_full_unstemmed Complex structural dynamics at adsorbed alkanethiol layers at Au (111) single-crystal domains
title_sort complex structural dynamics at adsorbed alkanethiol layers at au (111) single-crystal domains
publishDate 1998
url http://sedici.unlp.edu.ar/handle/10915/85101
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