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Full-Text Articles in Physical Sciences and Mathematics
Effect Of Force And Confinement On Chemical Reaction Kinetics, Alejandro Boscoboinik
Effect Of Force And Confinement On Chemical Reaction Kinetics, Alejandro Boscoboinik
Theses and Dissertations
This work studies model systems that are relevant to understanding the fundamentals of surface chemical processes. A Cu(100) single crystal surface modified by methyl thiolate species, formed from the adsorption of dimethyl disulfide, is used for modeling the effect of an external force in a chemical reaction. Furthermore, 2D-Zeolite is synthesized, characterized and postulated as a model system for studying chemistry in confined space. Furfural adsorption on Pd(111) is studied under different experimental conditions by means of infrared reflection-absorption spectroscopy. Furfural uptake experiments from sub-monolayer to multilayer coverages and sequential heating lead to an analysis of conformational changes and tilting …
Chemical Self-Assembly Strategies Toward The Design Of Molecular Electronic Circuits, Dustin Olson
Chemical Self-Assembly Strategies Toward The Design Of Molecular Electronic Circuits, Dustin Olson
Theses and Dissertations
The field of molecular electronics is generally divided into one of two major categories, the first focusing on the unique functionalization of single molecules to produce electronic behavior, the other utilizing large assemblies of molecules to produce electronic behavior. The former approach is largely attributed to the seminal paper by Aviram and Ratner in which they proposed a molecular donor-bridge-acceptor (D-B-A) type architecture could lead to single molecule rectification producing electronic effects similar to conventional semiconductor based diodes. Extensive research has been carried out in both fields as it is foreseen that new approaches to electronics miniaturization will be necessary …
Investigation Of Tribochemical Reactions Using The Model System Of Methyl Thiolate On Copper Foil In Ultrahigh Vacuum And Ab-Initio Calculations, Heather Loren Adams
Investigation Of Tribochemical Reactions Using The Model System Of Methyl Thiolate On Copper Foil In Ultrahigh Vacuum And Ab-Initio Calculations, Heather Loren Adams
Theses and Dissertations
Advancement in the understanding of tribochemical systems suffers from several obstacles that hinder the progress in advancing an understanding of the fundamental processes involved in the evolution of friction and wear. Characterizing ephemeral chemical states within a buried interface is an experimental challenge and work in this dissertation uses a model system, methyl thiolate on copper foil, that undergoes tribo-activated decomposition to investigate the rate of change of the chemical components in the interface. The elementary steps in the tribochemical reaction were identified and consist of a shear-induced decomposition of methyl thiolate species to produce gas-phase hydrocarbons and form surface …