Polymerization using palladium (II) salts II: Polymerization of 2-ethynyl-5-bromothiophene

The title monomer was polymerized using a bis(triphenyl phosphine) palladium (II) chloride, cuprous iodide, triphenyl phosphine catalyst system. The products are low-molecular-weight materials with thermal stabilities somewhat inferior to corresponding phenylacetylene-based polymers.