Selective oxidations and reductions with polymer-supported anionic reagents

✍ Scribed by G. Gelbard; T. Brunelet; O. Louis-André

• Publisher: Elsevier Science
• Year: 1989
• Weight: 84 KB
• Volume: 10
• Category: Article
• ISSN: 0923-1137
• DOI: 10.1016/0923-1137(89)90040-7

✦ Synopsis

302 enable reversible oxygenation. This system shows a brilliant reddish color like blood pigment, and reversibly binds oxygen molecules quantitatively. A typical example was seen in a poly-lipid liposome system containing lipid-heme in its interlayer structure. This system enables reversible oxygen transport better than that of human blood under the same physicochemical conditions as biological ones.

Analytical parameters for Fe-O 2 binding are: IR spectroscopy: 1161 cm -x (~o-o); MiSssbauer parameters: ~ and AEQ are 0.28 and 2.15 mm s -1, respectively. These results strongly indicate that the oxygen is considerably charge-separated (Fe(IIl)-O 2 ) as is the case in hemoglobin. This success is due to the contribution of the environment provided by the polymer matrix.

An oxygen-enriching membrane can also be prepared by fixing these heme derivatives to solid polymer membranes. This topic is touched upon briefly.