Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Organic surfaces"”.
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Fundamental Studies of Reactions between NO3 Radicals and Organic Surfaces
… with well-organized, highly characterized, organic thin films. The surface reactions were monitored in situ with reflection-absorption infrared spectroscopy (RAIRS). The oxidation states of surface-bound molecules were identified with X-ray photoelectron spectroscopy (XPS). Consumption of …
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Dynamics of Atmospherically Important Triatomics in Collisions with Model Organic Surfaces
… study of heterogeneous chemistry of atmospheric organic aerosols. In addition to changing the chemical and physical properties of the particle, reactions with oxidizing gases may alter aerosol optical properties, with implications for the regional radiation budget and climate. Molecular beams of …
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Computer simulation of water near model organic surfaces : interfacial behavior and hydration forces
Hydration forces between organic solid surfaces were investigated by grand canonical Monte Carlo simulations. Our interests are forcued on the hydration forces at separation enough large for the water layering to decay. My work is devided into two parts. First, in order to investigate what kind of …
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The Dynamics of Gas-Surface Energy Transfer in Collisions of Diatomic Gases with Organic Surfaces
… and energy transfer between gas molecules and surfaces is essential for the study of various chemical reactions. The collisions of diatomic molecules on organic surfaces are crucial to the study of atmospheric chemistry. Molecular beam scattering experiments performed in ultra-high vacuum …
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Fundamental Studies of Two Important Atmospheric Oxidants, Ozone and Hydroxyl Radical, Reacting with Model Organic Surfaces
… between gas-phase oxidants and particulate-phase organic compounds impact many important atmospheric chemical processes. For example, little is known about the reaction dynamics of gaseous oxidants with organic compounds found in the atmosphere. The first step of the reaction between gaseous ozone …
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Ultrahigh Vacuum Studies of the Reaction Kinetics and Mechanisms of Nitrate Radical with Model Organic Surfaces
… a key nighttime atmospheric oxidant, and organic particles will enable scientists to predict the fate and lifetime of the particles in the atmosphere. In an effort to acquire knowledge of interfacial reactions of nitrate radical with organics, model surfaces are created by the spontaneous …
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Theoretical and experimental studies of energy transfer dynamics in collisions of atomic and molecular species with model organic surfaces
… of chemical reaction dynamics at the gas/organic-surface interface requires knowledge of energy-transfer processes that happen during the initial gas/surface collision. We have examined the influence of mass and rovibrational motion on the energy-transfer dynamics of gas-phase species …
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Potential energy function development and dynamics of energy transfer and fragmentation for collisions of protonated peptide ions with organic surfaces
… of 1- 100 eV, adhere when they collide with organic surfaces. This is called soft-landing and by colliding biological molecules with surfaces, this property has been used to prepare microarrays. Chemical dynamics simulations give near quantitative energy transfer probabilities for projectile …
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Interfacial Energy Transfer in Small Hydrocarbon Collisions with Organic Surfaces and the Decomposition of Chemical Warfare Agent Simulants within Metal-Organic Frameworks
… on both the properties of the gas molecules and surfaces. Specifically, model organic surfaces, comprised of long-chain methyl- and hydroxyl-terminated self-assembled monolayers (SAMs) have been employed to test how an interfacial hydrogen bonding network may affect the ability of a gas-phase …
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The Dynamics of Gas-Surface Energy Transfer in Collisions of Rare Gases with Organic Thin Films
… the interaction time between gas molecules and organic surfaces. For example, how does interfacial structure and density affect energy transfer? What roles do intramonolayer forces and chemical identity play in the dynamics? We have approached these questions by scattering high-energy, rare gas …
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An experimental study of OH uptake by surfaces of tropospheric importance under dry and wet conditions
… effect of relative humidity (RH) on OH uptake by surfaces of tropospheric importance was investigated. Due to diffusion limitation conditions, experiments were performed with parallel reactors packed with beads and using a surface dilution technique. A virtual cylindrical reactor approximation was …
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Marine carbohydrate-active enzymes illuminate microbial ecology, evolution, and carbonate precipitation
… mineral formation via the alkalinity engine and organic surfaces involved in mineral nucleation and growth. Marine microbialites—mineralized microbial mats—preserve the earliest unequivocal evidence of life on Earth and billions of years of the evolutionary history of microbial life. And the gene …
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Functionalization of Metal Oxide Surfaces through Chemical Reactions and Physical Adsorption
… and materials for the functionalization of surfaces.</p> <p>We began with Methyl-terminated poly(dimethylsiloxanes) (PDMSs), which are typically considered to be inert and not suitable for surface functionalization reactions because of the absence of readily hydrolysable groups. …
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Characterization and patterned polymer films from a novel self-assembly process
… by scraping. SAMp films are stable in the common organic solvents and even in the high acidic media (6M HCl aqueous solution). The conformation of these films are thermally stable at high temperature. In an attempt to develop patterned surfaces of sulfonate and thiol functionality, close-packed, …
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Molecular adsorption at solid/liquid interfaces using self-assembled monolayer films
… they offer the ability to produce well-defined organic surfaces of controlled composition. This thesis addresses the development and characterization of such films for controlling the adsorptive properties of surfaces toward various surfactant-like molecules and for proteins. Adsorption is …