High Oxygen-Binding Affinity of Poly(4-Vinylimidazole-co-octylmethacrylate)-Cobaltporphyrin Complex: Effect of Hydrogen-Bond at the Imidazole Residue

Abstract

The oxygen-binding affinity of the cobalt-picketfence-porphyrin (CoP) ligated with imidazole was enhanced in the presence of an additive which forms a hydrogen-bond with the ligated imidazole. The CoP complex with poly(4(5)-vinylimidazole-co-octylmethacrylate) rapidly and reversibly bound oxygen and showed very high oxygen-binding affinity: The oxygen transport in the CoP-polymer membrane was efficiently facilitated.

Key Words:

• cobaltporphyrin
• polymer complex
• oxygen binding
• polymer ligand