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  4. Activating a [FeFe] Hydrogenase Mimic for Hydrogen Evolution under Visible Light**
 
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2022
Journal Article
Titel

Activating a [FeFe] Hydrogenase Mimic for Hydrogen Evolution under Visible Light**

Abstract
Inspired by the active center of the natural [FeFe] hydrogenases, we designed a compact and precious metal-free photosensitizer-catalyst dyad (PS-CAT) for photocatalytic hydrogen evolution under visible light irradiation. PS-CAT represents a prototype dyad comprising π-conjugated oligothiophenes as light absorbers. PS-CAT and its interaction with the sacrificial donor 1,3-dimethyl-2-phenylbenzimidazoline were studied by steady-state and time-resolved spectroscopy coupled with electrochemical techniques and visible light-driven photocatalytic investigations. Operando EPR spectroscopy revealed the formation of an active [FeIFe0] species-in accordance with theoretical calculations-presumably driving photocatalysis effectively (TON≈210).
Author(s)
Buday, Philipp
Kasahara, Chizuru
Hofmeister, Elisabeth
Kowalczyk, Daniel
Farh, Micheal K.
Riediger, Saskia
Schulz, Martin
Wächtler, Maria
Furukawa, Shunsuke
Saito, Masaichi
Ziegenbalg, Dirk
Gräfe, Stefanie
Friedrich-Schiller-Universität Jena
Bäuerle, Peter
Kupfer, Stephan
Dietzek‐Ivanšić, Benjamin
Weigand, Wolfgang
Zeitschrift
Angewandte Chemie. International edition
Thumbnail Image
DOI
10.1002/anie.202202079
Language
English
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Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Tags
  • H2 Production

  • Oligothiophene

  • Operando EPR Spectros...

  • Photocatalysis

  • [FeFe] Hydrogenase Mi...

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