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Title

Dual Luminescence and Long-lived Charge Separated states in Donor-Acceptor Assemblies based on Tetrathiafulvalene Fused Ruthenium(II)-Polypyridine Complexes

Authors
Liu, Shi-Xia
Goze, C.
Beitler, E.
Decurtins, Silvio
Published in Chimia. 2007, vol. 61, no. 10, p. 621-625
Abstract The creation of long-lived charge-separated states in donor-acceptor assemblies has been the goal of many studies aimed at mimicking the primary processes in photosynthesis. Here we present such assemblies based on tetrathiafulvalene (TTF) as electron donor and a dipyridophenazine (dppz) unit as electron acceptor in the form of a fused ligand (TTF-dppz) coordinated to ruthenium(II) via the dipyrido coordination site and with 2,2'-bipyridine (bpy) as auxiliary ligand, namely [Ru(bpy)3−x(TTF-dppz)x]2+ (x = 1−3). For x = 2, irradiation into the metal to dppz charge transfer transition results in electron transfer from TTF to ruthenium, thus creating a charge-separated state best described by [(TTF+-dppz)Ru(dppz−-TTF)(bpy)]2+ with a lifetime of 2.5 μs in dichloromethane.
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Research group Groupe Hauser
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LEIGGENER, Claudia et al. Dual Luminescence and Long-lived Charge Separated states in Donor-Acceptor Assemblies based on Tetrathiafulvalene Fused Ruthenium(II)-Polypyridine Complexes. In: Chimia, 2007, vol. 61, n° 10, p. 621-625. https://archive-ouverte.unige.ch/unige:3580

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Deposited on : 2009-10-02

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