Abstract
Success with artificial photosynthesis requires control of the photoinduced electron transfer reactions leading to charge-separated states. In this review, some new ideas to optimize such charge-separated states in ruthenium(II) polypyridyl based three-component systems with respect to: (1) long lifetimes and (2) ability to store sufficient energy for catalytic water splitting, are presented. To form long-lived charge-separated states, a manganese complex as electron donor and potential catalyst for water oxidation has been used. The recombination reaction is unusually slow because it occurs deep down in the Marcus normal region as a consequence of the large bond reorganization following the manganese oxidation. For the creation of high energy charge-separated states, a strategy using bichromophoric systems is presented. By consecutive excitations of the two chromophores, the formation of charge-separated states that lie higher in energy than either of the two excited states could in theory be achieved, the first results of which will be discussed in this review.
| Original language | English |
|---|---|
| Pages (from-to) | 741-750 |
| Number of pages | 10 |
| Journal | Inorganica Chimica Acta |
| Volume | 360 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Feb 15 2007 |
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Keywords
- Artificial photosynthesis
- Electron transfer
- Light induced charge separation
- Manganese
- Ruthenium
ASJC Scopus subject areas
- Biochemistry
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
Light-induced charge separation in ruthenium based triads - New variations on an old theme. / Falkenström, Magnus; Johansson, Olof; Hammarström, Leif.
In: Inorganica Chimica Acta, Vol. 360, No. 3, 15.02.2007, p. 741-750.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Light-induced charge separation in ruthenium based triads - New variations on an old theme
AU - Falkenström, Magnus
AU - Johansson, Olof
AU - Hammarström, Leif
PY - 2007/2/15
Y1 - 2007/2/15
N2 - Success with artificial photosynthesis requires control of the photoinduced electron transfer reactions leading to charge-separated states. In this review, some new ideas to optimize such charge-separated states in ruthenium(II) polypyridyl based three-component systems with respect to: (1) long lifetimes and (2) ability to store sufficient energy for catalytic water splitting, are presented. To form long-lived charge-separated states, a manganese complex as electron donor and potential catalyst for water oxidation has been used. The recombination reaction is unusually slow because it occurs deep down in the Marcus normal region as a consequence of the large bond reorganization following the manganese oxidation. For the creation of high energy charge-separated states, a strategy using bichromophoric systems is presented. By consecutive excitations of the two chromophores, the formation of charge-separated states that lie higher in energy than either of the two excited states could in theory be achieved, the first results of which will be discussed in this review.
AB - Success with artificial photosynthesis requires control of the photoinduced electron transfer reactions leading to charge-separated states. In this review, some new ideas to optimize such charge-separated states in ruthenium(II) polypyridyl based three-component systems with respect to: (1) long lifetimes and (2) ability to store sufficient energy for catalytic water splitting, are presented. To form long-lived charge-separated states, a manganese complex as electron donor and potential catalyst for water oxidation has been used. The recombination reaction is unusually slow because it occurs deep down in the Marcus normal region as a consequence of the large bond reorganization following the manganese oxidation. For the creation of high energy charge-separated states, a strategy using bichromophoric systems is presented. By consecutive excitations of the two chromophores, the formation of charge-separated states that lie higher in energy than either of the two excited states could in theory be achieved, the first results of which will be discussed in this review.
KW - Artificial photosynthesis
KW - Electron transfer
KW - Light induced charge separation
KW - Manganese
KW - Ruthenium
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U2 - 10.1016/j.ica.2006.06.046
DO - 10.1016/j.ica.2006.06.046
M3 - Article
VL - 360
SP - 741
EP - 750
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
SN - 0020-1693
IS - 3
ER -