Redox Reaction across the Membrane Incorporating Porphyrin-Linked Polymer Beads.

Abstract

Functional membranes, in which manganese meso-tetra (o-aminophenyl) porphyrin-spacer-linked polymer beads were incorporated, were prepared. The electron transfer function of the membranes was investigated by driving the conjugated redox reactions across the membranes. Consequently, it was shown that manganese porphyrin derivatives fixed to the side chains of polymer in form of beads acted as good electron carrier, while iron porphyrin, hemin, fixed to them did not. The kinetic investigation of electron tranfer supported that the hydrophilic polymer matrix and rigid side chains (spacers) were of large advantage to electron transfer function of metalloporphyrin.

Electron Transfer Function of Porphyrin Derivatives and Their Application. (Part 4). A Novel Photoinduced Hydrogen Evolution System Using Bifunctional Polymer-Supported Tin Porphyrins.

“…4 (b). Though this result agreed with the result reported in earlier paper (13,14) , more experiments were needed to support these assumputions. non-supported SnTCPP were indicated in Fig.…”

“…We have previously reported an electron transfer function of polymer beads-supported manganese porphyrin, which were incorporated through the membrane (13,14). Considering this results, we have also tried to construct a photoinduced hydrogen evolution system using manganese and tin porphyrins as an electron carrier (15).…”

Electron Transfer Function of Metalloporphyrins and Their Fixation in Polymer Gel Beads for Constructing Hydrogen Evolution System.

“…In previous papers we reported the electron transfer function of membranes, through which manganese porphyrin-fixed hydrogel polymer beads were immobilized (17,23) . It was found that the rate of electron transfer across the membrane depends on the amount of metalloporphyrins fixed in the polymer beads, the kind of polymer beads and the presence of spacers between polymer backbone and porphyrin.…”