Under an argon atmosphere, a solution of the PCP monomer (500 mg, 1.00 eq) and t-BuLi (up to 0.10 equiv.) in dry, degassed toluene was stirred for 24 h at 0 °C. The product was precipitated with a tenfold excess of methanol. Subsequently, the polymer was dissolved in toluene and precipitated with methanol to yield a white solid.