文摘
The vinyl addition polymerization of norbornyl-based monomers bearing polar functional groups is often problematic, leading to low molecular weight polymers in poor yield. Herein, we provide proof-of-principle evidence that addition-type homopolymers of siloxane substituted norbornyl-based monomers may be readily synthesized using the catalyst trans-[Ni(Cb>6b>Fb>5b>)b>2b>(SbPhb>3b>)b>2b>]. Polymerizations using this catalyst reached moderate to high conversion in just 5 min of polymerization and produced siloxane-substituted polymers with molecular weights exceeding 100 kg/mol. These polymers showed excellent thermal stability (Tb>db> ≥ 362 °C) and were cast into membranes that displayed high COb>2b> permeability and enhanced COb>2b>/Nb>2b> selectivity as compared to related materials.