POLY 111 |
| A BB'B” monomer, 4,3',5'-trifluorophenyl sulfone, 3, in which each of the functional groups exhibits a different level of reactivity has been prepared and characterized. The reactivity of the individual sites in 3 was probed via 13C and 19F NMR spectroscopy as well as a series of model reactions employing p-cresol as the nucleophile. The para position was shown to be significantly more reactive than the meta positions and substitution of one of the meta positions decreases the reactivity of the other meta position. Soluble, presumably branched, poly(arylene ether sulfone)s were prepared by reaction with 4,4'-dihydroxybiphenyl under carefully controlled conditions. The ability to control the degree of branching in these systems is currently being studied. |
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General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Sci-Mix
Division of Polymer Chemistry |