Absolute Surface Density of the Amine Group of the Aminosilylated Thin Layers:  Ultraviolet−Visible Spectroscopy, Second Harmonic Generation, and Synchrotron-Radiation Photoelectron Spectroscopy Study

Langmuir ◽  
1997 ◽  
Vol 13 (16) ◽  
pp. 4305-4310 ◽  
Author(s):  
Joong Ho Moon ◽  
Jin Ho Kim ◽  
Ki-jeong Kim ◽  
Tai-Hee Kang ◽  
Bongsoo Kim ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Photoelectron Spectroscopy ◽  
Surface Density ◽  
Second Harmonic ◽  
Thin Layers ◽  
Amine Group ◽  
Spectroscopy Study ◽  
Visible Spectroscopy

Optical Second Harmonic Generation of Thiols Adsorbed on Gold

1991 ◽  
Vol 237 ◽  
Author(s):  
M. Buck ◽  
F. Eisert ◽  
J. Fischer ◽  
M. Grunze ◽  
F. Träger
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Photoelectron Spectroscopy ◽  
Second Harmonic ◽  
Ex Situ ◽  
Nonlinear Susceptibility ◽  
Self Assembling ◽  
Optical Second Harmonic Generation ◽  
Saturation Coverage

AbstractThe adsorption kinetics of self-assembling n-alkyl thiol films on poly cry stalline gold substrates was studied in situ by optical second harmonic generation (SHG). The relation between the SHG signal change and the thiol coverage was established by comparison with ex situ X-ray photoelectron spectroscopy measurements. We find that the temporal dependence of the adsorption is well described by Langmuir adsorption kinetics. The source of the SHG signal is found to be linearly related to the nonlinear susceptibility of the adsorbate-substrate interaction. Experiments with chain lengths ranging from 1 to 22 showed, that the saturation coverage for thiols longer than hexanethiol is equal.

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