Intramolecular light induced activation of a Salen-Mn(III) complex by a ruthenium photosensitizer.
We have designed a molecular system consisting of a heteroleptic [Ru(bpy)(2)L](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.
Herrero
Christian
C
CEA, iBiTec-S, Service de Bioénergétique Biologie Structurale et Mécanismes (SB2SM), F-91191 Gif-sur-Yvette, France. christian.herrero@cea.fr
Hughes
Joseph L
JL
Quaranta
Annamaria
A
Cox
Nicholas
N
Rutherford
A William
AW
Leibl
Winfried
W
Aukauloo
Ally
A
D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000737:chemistry; D002384:Catalysis; D004578:Electron Spin Resonance Spectroscopy; D008027:Light; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D017319:Photosensitizing Agents / Q000737:chemistry*
C542902:Mn-salen; D009942:Organometallic Compounds; D017319:Photosensitizing Agents; C103599:bis(bipyridyl)ruthenium(II); D015082:2,2'-Dipyridyl