Probing Organization and Structural Characteristics of Alkanethiols Adsorbed on Gold and of Model Alkane Compounds through their Valence Electronic Structure: an Ultraviolet Photoelectron Spectroscopy Study
[en] In this paper we report an ultraviolet photoelectron spectroscopy (UPS) study of saturated alkane chains in
various configurations and conformations. The dependence of the valence spectra on molecular structure
characteristics has been assessed by comparing the results obtained from n-alkanethiol, R,ö-alkanedithiol,
and R-cycloalkyl-ö-alkanethiol monolayers adsorbed on gold, and from gas-phase model alkane compounds.
The differences between the spectra reflect directly the structural changes induced in the electronic structure
of the alkane chains. We have determined the type of folding sequences adopted in a 1,12-dodecanedithiol
monolayer. Angular dependent measurements and investigations on the photoelectron attenuation length have
evidenced very fine structural differences between films obtained on deposited gold films, annealed gold
films, and gold single crystals
Disciplines :
Chemistry
Author, co-author :
Duwez, Anne-Sophie ; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP. Present address: University of Liège
Pfister-Guillouzo, G.; Centre UniVersitaire de Recherche Scientifique, Pau, France
Delhalle, Joseph; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP
Riga, Joseph; Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP
Language :
English
Title :
Probing Organization and Structural Characteristics of Alkanethiols Adsorbed on Gold and of Model Alkane Compounds through their Valence Electronic Structure: an Ultraviolet Photoelectron Spectroscopy Study
Publication date :
2000
Journal title :
Journal of Physical Chemistry B
ISSN :
1520-6106
eISSN :
1520-5207
Publisher :
American Chemical Society, Washington, United States - District of Columbia
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