Dissertation
Structure-function relationships and design principles of metal-organic nanotubular materials
University of Iowa
Doctor of Philosophy (PhD), University of Iowa
Spring 2022
DOI: 10.17077/etd.006434
Abstract
The ability to rationally design materials is of great importance as it allows for the tuning of the materials to achieve certain goals or applications. For example, porous materials can be used for purposes such as separations, purification, catalysis, or gas storage. The pore spaces of metal-organic materials are of interest in this field of study. In particular, the 1D-pores of metal-organic nanotubular materials (MONTs) are of ideal size for increasing mass transfer properties and confinement effects on the guest molecules inside.
Although metal-organic materials are largely characterized, studies on metal-organic nanotubes are slim beyond structural characterization. In this dissertation, I seek to expand upon the understanding of the principles controlling the structure-function relationship of MONT materials. There is a vital need for this knowledge, as it is necessary to guide the targeted synthesis of new materials for specific applications, such as separations and gas storage. Specifically, I conduct a series of studies centered around exploring the behaviors of solvents within MONT materials, determining what structural characteristics are involved, and probing the method of MONT formation in order to further the knowledge base for rational design of materials.
Details
- Title: Subtitle
- Structure-function relationships and design principles of metal-organic nanotubular materials
- Creators
- Lindsey C. Applegate
- Contributors
- Tori Forbes (Advisor)Christopher Cheatum (Committee Member)Scott Daly (Committee Member)Edward Gillan (Committee Member)Johna Leddy (Committee Member)
- Resource Type
- Dissertation
- Degree Awarded
- Doctor of Philosophy (PhD), University of Iowa
- Degree in
- Chemistry
- Date degree season
- Spring 2022
- DOI
- 10.17077/etd.006434
- Publisher
- University of Iowa
- Number of pages
- xxii, 289 pages
- Copyright
- Copyright 2022 Lindsey C. Applegate
- Language
- English
- Description illustrations
- Illustrations, charts, graphs, tables
- Description bibliographic
- Includes bibliographical references (pages 172-181).
- Public Abstract (ETD)
My dissertation work explores the impact of nanotubular structure on the resulting water uptake properties. When pore diameters within materials are reduced to less than 100 nanometers they are considered to be nanopores, and chemical and physical properties of the water located within the pores change based on confinement effects. These confinement effects arise from the change in surface area to volume ratio when the material is reduced to the nanoscale, which in turn results in the surface energy becoming a larger contributor to the energetics of the system. These effects are also observed when a molecule is confined within one of these nanoporous channels. Because of the aforementioned changes in properties, nanoporous systems can be manipulated to create reactive systems or selective membranes. This work was conducted in order to evaluate nanoporous systems, specifically metal-organic nanotubes, for the eventual application in areas such as water separations, storage, and purification.
- Academic Unit
- Chemistry
- Record Identifier
- 9984270954302771
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