Photostable Chlorophyll a Conjugated with Poly(vinylpyrrolidone)−Smectite Catalyzes Photoreduction and Hydrogen Gas Evolution by Visible Light
- 16 April 1998
- journal article
- research article
- Published by American Chemical Society (ACS) in Bioconjugate Chemistry
- Vol. 9 (3) , 409-412
- https://doi.org/10.1021/bc9701656
Abstract
Chlorophyll a was adsorbed to a synthetic smectite intercalated by poly(vinylpyrrolidone) (PVP) to form the chlorophyll−PVP−smectite conjugate (Chl−PVP−SME) having an absorption maximum at 677 nm. The conjugate was found to be stable toward light illumination in comparison with chlorophyll−smectite, chlorophyll−PVP, and free chlorophyll a. Chl−PVP−SME had a photoinduced activity for catalyzing the reduction of methyl viologen. Furthermore, the evolution of hydrogen gas was observed when an aqueous suspension containing Chl−PVP−SME, methyl viologen (an electron carrier), 2-mercaptoethanol (an electron donor), and hydrogenase was illuminated by visible light.Keywords
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