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Photoinduced Singlet Charge Transfer in a Ruthenium(II) Perylene-3,4:9,10-bis(dicarboximide) Complex.
- Source :
-
Journal of Physical Chemistry B . Jun2011, Vol. 115 Issue 23, p7533-7540. 8p. - Publication Year :
- 2011
-
Abstract
- Elucidation of photoinduced charge transfer behavior in organic dye/metal hybrids is important for developing photocatalytic systems for solar energy conversion. We report the synthesis and photophysical characterization of a perylene-3,4:9,10-bis(dicarboximide) (PDI)âruthenium(II) complex, bis-PDI-2,2â²-bipyridineRu(II)Cl2(CNtbutyl)2, which has favorable energetics, ÎGCSâ â1.0 eV, for singlet electron transfer from the Ru complex to PDI. Time-resolved optical spectroscopy reveals that upon selective photoexcitation of PDI, ultrafast charge transfer (<150 fs) from the Ru complex to 1*PDI generates the Ru(III)âPDIââ¢ion pair. The resulting vibrationally hot Ru(III)âPDIââ¢ion pair exhibits fast relaxation (Ï = 3.9 ps) and charge recombination (ÏCR= 63 ps). Our experimental and computational (DFT and TDDFT) studies show that energy-preserving photodriven singlet electron transfer can dominate in properly designed organic dye/metal complexes, making them of particular interest for use in artificial photosynthetic systems for solar fuels formation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15206106
- Volume :
- 115
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Journal of Physical Chemistry B
- Publication Type :
- Academic Journal
- Accession number :
- 85433699
- Full Text :
- https://doi.org/10.1021/jp2016374