Reversible oxygen-binding and facilitated oxygen transport in membranes of polyvinylimidazole complexed with cobalt-phthalocyanine

Nalinakumari Preethi, Hiromi Shinohara, Hiroyuki Nishide

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27 Citations (Scopus)


A membrane with an oxygen-binding capability and nanometer thickness was prepared by complexing cobalt-phthalocyanine as an oxygen carrier with the copolymer of vinylimidazole and octyl methacrylate. The complex showed reversible oxygen-binding in the solution state at low temperature. The permeability coefficient of oxygen (PO2) through this membrane was much higher than that of nitrogen (PN2)(PO2 / PN2 > 20) and increased at lower upstream oxygen pressure. The facilitation of oxygen transport was augmented by increasing the concentration of the oxygen carrier, cobalt-phthalocyanine fixed in the membrane.

Original languageEnglish
Pages (from-to)851-855
Number of pages5
JournalReactive and Functional Polymers
Issue number8
Publication statusPublished - 2006 Aug



  • Cobalt-phthalocyanine
  • Facilitated transport
  • Poly(vinylimidazole)
  • Polymer membrane
  • Polymer-metal complex

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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