Figure 2.

a) Chemical structure of depolymerization products from pDTT‐Cat₁₀₀. b) ¹H NMR of pDTT‐Cat₁₀₀ (blue) and pDTT‐Cat₁₀₀ depolymerized in presence of 1 equiv DTT and 0.5 equiv Et₃N with respect to polymer end‐caps (orange) in DMSO‐d ₆. c) Conversion of polymers, pDTT‐Cat₁₀₀ (green), and pDTT‐Cat₂₀ (black) to cyclic monomer in response to adding 1 equiv DTT and 0.5 equiv Et₃N, along with the response of adding only 0.5 equiv Et₃N to pDTT‐Cat₂₀ (blue), measured by ¹H NMR spectroscopy (lines to guide the eye). In all measurements the polymer concentration was 1.6 mm.