Photoproduction of Hydrogen by Decamethylruthenocene Combined with Electrochemical Recycling

Lucie Rivier, Pekka Peljo, Laurent A.C. Vannay, Grégoire C. Gschwend, Manuel A. Méndez, Clémence Corminboeuf, Micheál D. Scanlon, Hubert H. Girault

Research output: Contribution to journalArticlepeer-review

Abstract

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 and1H 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.

Original languageEnglish
Pages (from-to)2324-2327
Number of pages4
JournalAngewandte Chemie - International Edition
Volume56
Issue number9
DOIs
Publication statusPublished - 20 Feb 2017
Externally publishedYes

Keywords

  • decamethylruthenocene
  • electrocatalysis
  • hydrogen evolution reaction
  • metallocenes

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