Using Covalent and Non-Covalent Chemistry to Control Properties of Single -Walled Carbon Nanotubes
Usrey, Monica
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https://hdl.handle.net/2142/82418
Description
Title
Using Covalent and Non-Covalent Chemistry to Control Properties of Single -Walled Carbon Nanotubes
Author(s)
Usrey, Monica
Issue Date
2008
Doctoral Committee Chair(s)
Michael S. Strano
Department of Study
Chemical Engineering
Discipline
Chemical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Chemical
Language
eng
Abstract
Electrophoretic mobility control is demonstrated via covalent functionalization with 4-hydroxybenzene diazonium and non-covalent functionalization with sodium cholate surfactant. Solution-phase solubility without surfactants can be achieved using high levels of covalent functionalization with aryl hydroxyl or aryl carboxylic acid moieties. Polymer theory based models for the Hildebrand and Hansen solubility parameters confirm the effect of functionalization. The adsorption of SWNT to silicon oxide surfaces modified with 3-aminopropyltriethoxysilane (APTES) is controlled via type of functional moiety, extent of functionalization, and nature of silicon oxide surface chemistry. Self-consistent field theory for polymer systems is applied and describes the effect of functionalization on SWNT adsorption thermodynamics.
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