Probing Hydrocarbon Chain Length Effects on SAM Surfaces

Low and high energy ion/surface scattering
techniques are used to investigate chain length
effects for self-assembled monolayer (SAM) surfaces
consisting of n-alkanethiol molecules on gold
substrates. The focus of this work was to probe the
structure, packing, and stability of the SAM
surfaces using ion/surface interactions. Mechanisms
are investigated for low and high energy ion/surface
collisions, providing a more complete understanding
of mass spectrometry techniques such as tandem mass
spectrometry and secondary ion mass spectrometry.
The low energy reactive collisions of two
independent probe ions illustrate an odd-even
hydrocarbon chain length effect for a wide range of
hydrocarbon SAM surfaces. Variations in coverage,
extent of oxidation, and high mass cluster formation
as a function of hydrocarbon chain length of the
alkanethiol SAM surfaces were investigated using
high energy ion/surface collisions. This book
should assist people interested in ion/surface
interactions utilizing mass spectrometry and will
further assist students and professionals focusing
on materials science and surface chemistry.

Autorentext

Kurt V. Wolf, Ph.D.: Studied chemistry at Princeton University. Business Integrator at Merck & Co., Inc., Upper Gwynedd, PA.

Klappentext

Low and high energy ion/surface scattering techniques are used to investigate chain length effects for self-assembled monolayer (SAM) surfaces consisting of n-alkanethiol molecules on gold substrates. The focus of this work was to probe the structure, packing, and stability of the SAM surfaces using ion/surface interactions. Mechanisms are investigated for low and high energy ion/surface collisions, providing a more complete understanding of mass spectrometry techniques such as tandem mass spectrometry and secondary ion mass spectrometry. The low energy reactive collisions of two independent probe ions illustrate an odd-even hydrocarbon chain length effect for a wide range of hydrocarbon SAM surfaces. Variations in coverage, extent of oxidation, and high mass cluster formation as a function of hydrocarbon chain length of the alkanethiol SAM surfaces were investigated using high energy ion/surface collisions. This book should assist people interested in ion/surface interactions utilizing mass spectrometry and will further assist students and professionals focusing on materials science and surface chemistry.