Fabrication of a Photoelectronic Device by Direct Chemical Binding of the Photosynthetic Reaction Center Protein to Metal Surfaces


  • Thanks are due to Dr. Shachar Richter at Chemical Physics, Tel Aviv University, for scientific consultation. The work was partially supported by a grant from the Institute of Nanosciences and Nanotechnology, Tel Aviv University. Supporting Information is available online from Wiley InterScience or from the author.


original image

Photosystem I (PS I), a multi-subunit protein–chlorophyll complex that mediates vectorial, light-induced electron transfer has been self-assembled as an oriented monolayer on a solid metal surface. Unique cysteine mutants are induced for the attachment of PS I through the formation of sulfide bonds. A photopotential of approximately +1 V is observed (see Figure) for single trimer molecules or the monolayer continuum.