Copolymerizations of chiral phenylacetylenes having an L-amino alcohol residue and an achiral phenylacetylene having a dodecyl group, used as gas separation membranes

- Three novel polyphenylacetylene gas separation membranes were synthesized.
- The copolymers adopted one-handed helical conformations.
- The separation selectivity factor of CO2/N2 was 17.9.
- The CO2 permeability coefficient of CO2/N2 was 77 Barrers.