Intramolecular light induced activation of a Salen–MnIII complex by a ruthenium photosensitizer

Christian Herrero; Joseph L. Hughes; Annamaria Quaranta; Nicholas Cox; A. William Rutherford; Winfried Leibl; Ally Aukauloo

doi:10.1039/C0CC01710H

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Intramolecular light induced activation of a Salen–Mn^III complex by a ruthenium photosensitizer†

Christian Herrero,*^a Joseph L. Hughes,^a Annamaria Quaranta,^a Nicholas Cox,^b A. William Rutherford,^a Winfried Leibl^a and Ally Aukauloo^ac

Author affiliations

* Corresponding authors

^a CEA, iBiTec-S, Service de Bioénergétique Biologie Structurale et Mécanismes (SB2SM), F-91191 Gif-sur-Yvette, France
E-mail: christian.herrero@cea.fr

^b Max Planck Institute für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470, Mülheim an der Ruhr, Germany

^c Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR-CNRS 8182, Université de Paris-Sud XI, F-91405 Orsay, France

Abstract

We have designed a molecular system consisting of a heteroleptic [Ru(bpy)₂L]²⁺ chromophore covalently linked to a Mn^III–Salen unit. We demonstrate the light induced oxidation of the Mn^III center in this putative photo-catalyst assembly to a Mn^IV high spin intermediate. Both oxidation states have been characterized by transient absorption and EPR techniques.

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Supplementary files

Experimental procedures for synthesis, EPR, flash photolysis and light-activation studies PDF (1054K)

Article information

DOI: https://doi.org/10.1039/C0CC01710H
Article type: Communication
Submitted: 02 Jun 2010
Accepted: 19 Aug 2010
First published: 13 Sep 2010

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Chem. Commun., 2010,46, 7605-7607

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Intramolecular light induced activation of a Salen–Mn^III complex by a ruthenium photosensitizer

C. Herrero, J. L. Hughes, A. Quaranta, N. Cox, A. W. Rutherford, W. Leibl and A. Aukauloo, Chem. Commun., 2010, 46, 7605 DOI: 10.1039/C0CC01710H

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