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University of Illinois at Urbana-Champaign
Nuclear Magnetic Resonance Under Extreme Conditions: High-Pressure NMR Probe Development, and NMR Applications to the Dynamics of Confined Liquids
Abstract
dc:descriptionDynamic NMR studies at ambient pressure were also perfonned on the polar fluids ethanol, 2,2,2-trifluoroethanol, propionic acid, and pentafluoropropionic acid confined to porous silica glasses with well-defined pore sizes. The $\sp{13}$C NMR spin-lattice relaxation times were measured and analyzed in terms of the two-state-fast exchange model, which allows separation of the surface layer relaxation rates. The experiments showed that the hydrocarbon fluids form stronger hydrogen-bond interactions with the silica surface, and that confinement has little effect on the internal rotation of terminal -CF$\sb3$ or -CH$\sb3$ groups.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Chemistry
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Ballard, Lance Edward Lynn
- Contributors dc:contributor
-
- Jonas, Jiri
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (MiAaPQ)AAI9737043
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/84362