Table S1: Solubility and solution color of o-chloroaniline (OC)/AN and m-chloroaniline (MC)/AN copolymer base microparticles with an oxidant [(NH₄)₂S₂O₈]/monomer molar ratio of 1/2 in 1 M HCl

Table S2: The membrane formability of the OC/AN and MC/AN copolymer base microparticles in NMP by solution casting methods on glass and the characteristics of the membranes formed

Fig. S1: Wide-angle X-ray diffractograms of the virgin HCl salt and emeraldine base of OC homopolymer microparticles

Fig. S2: Actual air-separation performance through the blend membranes of the MC/AN (30/70) copolymer and 90 wt% ethylcellulose (EC) with operational temperature