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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

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 - 1 Jan 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • decamethylruthenocene
  • electrocatalysis
  • hydrogen evolution reaction
  • metallocenes

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