ORGN 136 |
| The varying properties of substituent groups on aromatic-based polymers may affect the conductivity and water uptake of such polymers. These characteristics are important in determining the effectiveness of a polymer for use as a proton exchange membrane (PEM) in fuel cells. Groups such as carbonyls, ethers and methylene groups have different activities in relationship to aromatic rings. In order to determine the effects these groups have on substituted rings and overall polymer properties, suitable, sulfonated monomers must be built and analyzed to determine their relative stability, conductivity and water uptake. This presentation will focus on the synthesis of one of these monomers. The structure of this monomer as seen below contains an aromatic sulfonic acid-bearing backbone with methylene and carbonyl group characters outlining the aromatic structure. The synthesis methods employed include Grignard synthesis and coupling, nitrile addition/hydrolysis, and the cyanation of aromatic halides.
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Heterocycles, Aromatics, Materials, Devices, Switches, Combinatorial Chemistry, Metal-Mediated Reactions
8:00 PM-10:00 PM, Sunday, 13 March 2005 Convention Center -- Hall D, Poster
Division of Organic Chemistry |
