POLY 453 |
| Soluble polyphenylene (SPP) homopolymers with a controlled polymer chain structure were synthesized for the first time by the complete dehydrogenation of poly(1,3-cyclohexadiene) (PCHD) having a 1,2-CHD unit and 1,4-CHD unit. The reactivity of PCHD for dehydrogenation strongly depends on the polymer chain structure. The rate of dehydrogenation is fast on a long sequence of 1,4-CHD units, while it is considerably impeded by the presence of 1,2-CHD units in the polymer chain. With a reaction temperature higher than 90 °C, complete dehydrogenation of PCHD proceeds successfully to yield SPP homopolymers. The polymers obtained are soluble in polar solvents. The optical and electrical characteristics of SPP were controllable by the molar ratio of 1,2-/1,4-phenylene (Ph) units of polymer chain, and clearly indicate the nature of a g-conjugated polymer semiconductor. |
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Conjugated Polymer Materials and Hybrids: Synthesis, Macromolecular Assemblies, and Nanostructures
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Polymer Chemistry |