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Light-Driven Electr...
Light-Driven Electron Transfer between a Photosensitizer and a Proton-Reducing Catalyst Co-adsorbed to NiO
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- Gardner, James M, 1982- (författare)
- Ångström Laboratory, Department of Chemistry, Uppsala University, Box 523, 75120 Uppsala, Sweden
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- Beyler, Maryline (författare)
- Uppsala University
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- Karnahl, Michael (författare)
- Uppsala University
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- Tschierlei, Stefanie (författare)
- Uppsala University
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- Ott, Sascha (författare)
- Uppsala universitet,Molekylär biomimetik
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- Hammarström, Leif (författare)
- Uppsala universitet,Fysikalisk kemi
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(creator_code:org_t)
- 2012-11-16
- 2012
- Engelska.
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Ingår i: Journal of the American Chemical Society. - : American Chemical Society (ACS). - 0002-7863 .- 1520-5126. ; 134:47, s. 19322-19325
- Relaterad länk:
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http://pubs.acs.org/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- While intermolecular hole-hopping along the surface of semiconductors is known, there are no previous examples of electron-hopping between molecules on a surface. Herein, we present the first evidence of electron transfer from the photoreduced sensitizer Coumarin-343 (C343) to complex 1, both bound on the surface of NiO. In solution, 1 has been shown to be a mononuclear Fe-based proton-reducing catalyst. The reduction of 1 is reversible and occurs within 50 ns after excitation of C343. Interfacial recombination between the reduced 1(-) and NiO hole occurs on a 100 µs time scale by non-exponential kinetics. The observed process is the first essential step in the photosensitized generation of H2 from a molecular catalyst in the absence of a sacrificial donor reagent.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- SRA - Energy
- SRA - Energi
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- art (ämneskategori)
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