Fig. 4

Time–conversion curves for the copolymerization of a MC with EC and b EC with MCin. Copolymerization was conducted using ^tBuMe2SKA as the initiator and Tf₂NSi^tBuMe₂ (generated via the in situ reaction between ^tBuMe2SKA and Tf₂NH (Scheme S1, Supporting Information)) as the catalyst in CH₂Cl₂ at 0 °C. The polymerization conditions were as follows: a [MC]₀ = [EC]₀ = 0.50 M, [^tBuMe2SKA]₀ = 0.0025 M, and [Tf₂NSi^tBuMe₂]₀ = 0.0025 M, b [EC]₀ = [MCin]₀ = 0.64 M, [^tBuMe2SKA]₀ = 0.013 M, and [Tf₂NSi^tBuMe₂]₀ = 0.013 M