Eric Fossum, Ph.D. (Advisor); Daniel Ketcha, Ph.D. (Committee Member); Ioana Pavel, Ph.D. (Committee Member)
Master of Science (MS)
The synthesis of poly(arylene ether)s, with a pendent aryl iodide, was achieved via nucleophilic aromatic substitution (NAS) polycondensation of DI-DFDPS monomer. The platform diiodo-difluorodiphenyl sulfone monomer, DFDPS-DI (3), was prepared in one-step, via EAS chemistry. Structural characterization was provided by NMR spectroscopy, GC/MS, and elemental analysis. As “pre” approach didn’t work here, so “post” approach was used to synthesize N-heterocycle functionalized copolymers. The DI-copolymers were subjected to copper-catalyzed C-N coupling reaction with carbazole, phenoxazine, and indole and the syntheses of chromophore based copolymer were successfully carried out. A series of PAEs containing carbazole, phenoxazine, and indole substituents were synthesized and characterized. The copolymers were characterized by a combination of NMR spectroscopy, UV/Vis spectroscopy. DI-copolymers displayed had sufficient molecular weight (Mn) and thermal stability with 5% weight loss temperature (Tg) above 388 0C and glass transition temperature, Tg, value above 193 0C. Optical analyses provided that all modified copolymer materials emitted in the light blue region.
Year Degree Awarded
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