Photoproduction of Hydrogen by Decamethylruthenocene Combined with Electrochemical Recycling

The photoinduced hydrogen evolution reaction (HER) by decamethylruthenocene, Cp2*RuII (Cp*=C5Me5), is reported. The use of a metallocene to photoproduce hydrogen is presented as an alternative strategy to reduce protons without involving an additional photosensitizer. The mechanism was investigated by (spectro)electrochemical and spectroscopic (UV/Vis and 1H NMR) measurements. The photoactivated hydride involved was characterized spectroscopically and the resulting [Cp2*RuIII]+ species was electrochemically regenerated in situ on a fluorinated tin oxide electrode surface. A promising internal quantum yield of 25 % was obtained. Optimal experimental conditions— especially the use of weakly coordinating solvent and counterions—are discussed.


Publié dans:
Angewandte Chemie International Edition, 56, 9, 2324-2327
Année
2017
Publisher:
Weinheim, Wiley-Blackwell
ISSN:
1433-7851
Mots-clefs:
Laboratoires:




 Notice créée le 2017-01-27, modifiée le 2019-06-04

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