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Proceedings Paper

Interaction of [FeFe]-hydrogenases with single-walled carbon nanotubes
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Paper Abstract

Single-walled carbon nanotubes (SWNT) are promising candidates for use in energy conversion devices as an active photo-collecting elements, for dissociation of bound excitons and charge-transfer from photo-excited chromophores, or as molecular wires to transport charge. Hydrogenases are enzymes that efficiently catalyze the reduction of protons from a variety of electron donors to produce molecular hydrogen. Hydrogenases together with SWNT suggest a novel biohybrid material for direct conversion of sunlight into H2. Here, we report changes in SWNT optical properties upon addition of recombinant [FeFe] hydrogenases from Clostridium acetobutylicum and Chlamydomonas reinhardtii. We find evidence that novel and stable charge-transfer complexes are formed under conditions of the hydrogenase catalytic turnover, providing spectroscopic handles for further study and application of this hybrid system.

Paper Details

Date Published: 11 September 2007
PDF: 9 pages
Proc. SPIE 6650, Solar Hydrogen and Nanotechnology II, 665011 (11 September 2007); doi: 10.1117/12.736232
Show Author Affiliations
Drazenka Svedruzic Chang, National Renewable Energy Lab. (United States)
Timothy J. McDonald, National Renewable Energy Lab. (United States)
Yong-Hyun Kim, National Renewable Energy Lab. (United States)
Jeffrey L. Blackburn, National Renewable Energy Lab. (United States)
Michael J. Heben, National Renewable Energy Lab. (United States)
Paul W. King, National Renewable Energy Lab. (United States)

Published in SPIE Proceedings Vol. 6650:
Solar Hydrogen and Nanotechnology II
Jinghua Guo, Editor(s)

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