Jump to main content
Jump to site search

Issue 7, 2011
Previous Article Next Article

Photocurrent generation by photosystem 1 integrated in crosslinked redox hydrogels

Author affiliations

Abstract

Photosystem 1 (PS1) catalyzes the light driven translocation of electrons in the process of oxygenic photosynthesis. Isolated PS1 was immobilised on a gold electrode surface via an Os complex containing redox polymer hydrogel which simultaneously is used as immobilisation matrix and as electron donor for PS1. On addition of methyl viologen as sacrificial electron acceptor, a catalytic photocurrent with densities of up to 29 μA cm−2 at a light intensity of 1.8 mW cm−2 was observed upon illumination—equivalent to an incident photon to carrier efficiency (IPCE) of 3.1%. The strong dependence of the catalytic reaction on the light intensity and the dissolved oxygen concentration indicates that a significant photocurrent from excited PS1 to the electrode can only be realized in the presence of oxygen.

Graphical abstract: Photocurrent generation by photosystem 1 integrated in crosslinked redox hydrogels

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Feb 2011, accepted on 03 Jun 2011 and first published on 21 Jun 2011


Article type: Paper
DOI: 10.1039/C1EE01126J
Energy Environ. Sci., 2011,4, 2435-2440

  •   Request permissions

    Photocurrent generation by photosystem 1 integrated in crosslinked redox hydrogels

    A. Badura, D. Guschin, T. Kothe, M. J. Kopczak, W. Schuhmann and M. Rögner, Energy Environ. Sci., 2011, 4, 2435
    DOI: 10.1039/C1EE01126J

Search articles by author

Spotlight

Advertisements