Oxygen Permeability of Fully Conjugated Polymers Consisting of (Di)ethynylene and Phenylene Groups Synthesized by Glaser or Sonogashira Coupling Polycondensation

Fully conjugated polymers are candidates as rigid polymers for good oxygen permselective membrane materials. In this study, we synthesized a series of such polymers with a rigid backbone consisting of (di)ethynylene and phenylene groups and alkyl side groups by Glaser or Sonogashira coupling polycondensation. Some of these polymers gave self-supporting membranes and their oxygen permselectivities were influenced by the alkyl groups. Oxygen permselectivities of polymers containing diynes in the main chain were determined for the first time. We synthesized a series of polymers with a rigid backbone consisting of ethynylene and phenylene groups and alkyl side groups by Glaser or Sonogashira coupling polycondensation. Some of these polymers gave self-supporting membranes and their oxygen permselectivities were influenced by the alkyl groups. Oxygen permselectivities of polymers containing diethynylene in the main chain were determined for the first time.