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.


Published in:
Angewandte Chemie International Edition, 56, 9, 2324–2327
Year:
2017
Publisher:
Weinheim, Wiley-Blackwell
ISSN:
1433-7851
Keywords:
Laboratories:




 Record created 2017-01-27, last modified 2018-09-13

Publisher's version:
Download fulltextPDF
Supporting Information:
Download fulltextPDF
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)