| Abstract
| - The polymerization of 3-undecylbithiophene in supercritical carbon dioxide (with ferrictriflate as the oxidant) was studied at 313 K and 10.5 MPa. The resulting polymer was comparable instructure, molecular weight, conjugation, and intrinsic electrical conductivity to the polymer synthesizedin nitrobenzene (with ferric chloride as the oxidant). In addition, a 95% yield of the conducting polymerwas obtained in 1 h. Conductive composites of poly(3-undecylbithiophene) and porous, cross-linkedpolystyrene were prepared via the in situ polymerization of 3-undecylbithiophene in supercritical carbondioxide at temperatures in the range 313−413 K and pressures in the range 10.5−34.5 MPa. The highestconductivities of the composite were obtained at 313 K and 20.7 MPa, which represent optimum conditionsfor oxidant/monomer deposition and conducting polymer network formation on the surface and pores ofthe host polymer.
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