Publication Date
2019
Document Type
Thesis
Committee Members
Eric Fossum, Ph.D. (Advisor); David Dolson, Ph.D. (Committee Member); Daniel Ketcha, Ph.D. (Committee Member)
Degree Name
Master of Science (MS)
Abstract
The synthesis of N-heterocycle functionalized benzophenone-type monomers and their incorporation into poly(arylene ether ketone)s were explored. Two benzophenone derivatives, 2,4-difluorobenzophenone and 3,5-difluorobenzophenone, were successfully functionalized with a carbazole group, via a copper-catalyzed C-N coupling reaction. Structural characterization was provided by NMR spectroscopy, GC/MS, and elemental analysis. The monomers were covalently incorporated, at various molar ratios, into poly(arylene ether) systems by copolymerization with 4,4’-difluorodiphenylsulfone (DPS) and 4,4’-dihydroxydiphenyl ether (DPE), as well as 4,4’-difluorotriphenylphosphine oxide (dFTPPO) and DPE, via nucleophilic aromatic substitution (NAS) chemistry. Most polymeric materials synthesized provided sufficient molecular weights to cast durable films, and also possessed good thermal stability with 5% weight loss temperatures (Td-5%) all above 390 ℃ and glass transition temperatures, Tg, values all above 170 ℃. In general, TPPO and DPE copolymers provided higher Tg and Td-5% values. Photophysical analyses provided that all monomer and copolymer materials emitted in the blue-green region when excited at 365 nm.
Page Count
102
Department or Program
Department of Chemistry
Year Degree Awarded
2019
Copyright
Copyright 2019, all rights reserved. My ETD will be available under the "Fair Use" terms of copyright law.
