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(a) O2 diffusion coefficient for both thermally- and methanol-treated poly(OMe n-mer) samples versus side-chain length (n). Slopes and errors, determined using linear regression and χ2 analysis, were calculated using the Origin 9.1 fitting tool. (b) O2/N2 diffusivity selectivity for n = 4 and n = 5 uniform poly(OMe n-mer) and nonuniform OMe-ROMP with average n = 4.5.
