Successive light-induced two electron transfers in a Ru-Fe supramolecular assembly: from Ru-Fe(ii)-OH2 to Ru-Fe(iv)-oxo

In the present work we describe the synthesis and study of a RuII–FeII chromophore–catalyst assembly designed to perform the light-induced activation of an iron bound water molecule and subsequent photo-driven oxidation of a substrate. Using a series of spectroscopic techniques, we demonstrate that...

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Bibliographic Details
Published in:Chemical science (Cambridge) 2015-01, Vol.6 (4), p.2323-2327
Main Authors: Herrero, Christian, Quaranta, Annamaria, Sircoglou, Marie, Sénéchal-David, Katell, Baron, Aurélie, Marín, Irene Mustieles, Buron, Charlotte, Baltaze, Jean-Pierre, Leibl, Winfried, Aukauloo, Ally, Banse, Frédéric
Format: Article
Language:English
Subjects:
Life Sciences
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Summary:In the present work we describe the synthesis and study of a RuII–FeII chromophore–catalyst assembly designed to perform the light-induced activation of an iron bound water molecule and subsequent photo-driven oxidation of a substrate. Using a series of spectroscopic techniques, we demonstrate that excitation of the chromophore unit with 450 nm light, in the presence of a sacrificial electron acceptor, triggers a cascade of electron transfers leading to the formation of a high valent iron(IV)–oxo center from an iron(II)-bound water molecule. The activity of this catalytic center is illustrated by the oxidation of triphenyl phosphine.
ISSN:2041-6520
2041-6539
DOI:10.1039/c5sc00024f