抄録
This review focuses on our recent efforts in synthetic ruthenium-tyrosine- manganese chemistry mimicking the donor side reactions of Photosystem II. Tyrosine and tryptophan residues were linked to ruthenium photosensitizers, which resulted in model complexes for proton-coupled electron transfer from amino acids. A new mechanistic model was proposed and used to design complexes in which the mechanism could be switched between concerted and step-wise proton-coupled electron transfer. Moreover, a manganese dimer linked to a ruthenium complex could be oxidized in three successive steps, from Mn 2 II,II to Mn2 III,IV by the photo-oxidized ruthenium sensitizer. This was possible thanks to a charge compensating ligand exchange in the manganese complex. Detailed studies of the ligand exchange suggested that at high water concentrations, each oxidation step is coupled to a proton-release of water-derived ligands, analogous to the oxidation steps of the manganese cluster of Photosystem II.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 25-40 |
| ページ数 | 16 |
| ジャーナル | Photosynthesis Research |
| 巻 | 87 |
| 発行部数 | 1 |
| DOI | |
| 出版物ステータス | Published - 2006 1 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Plant Science
これを引用
Mimicking the electron donor side of Photosystem II in artificial photosynthesis. / Lomoth, Reiner; Magnuson, Ann; Sjödin, Martin; Huang, Ping; Styring, Stenbjörn; Hammarström, Leif.
：: Photosynthesis Research, 巻 87, 番号 1, 01.2006, p. 25-40.研究成果: Review article
}
TY - JOUR
T1 - Mimicking the electron donor side of Photosystem II in artificial photosynthesis
AU - Lomoth, Reiner
AU - Magnuson, Ann
AU - Sjödin, Martin
AU - Huang, Ping
AU - Styring, Stenbjörn
AU - Hammarström, Leif
PY - 2006/1
Y1 - 2006/1
N2 - This review focuses on our recent efforts in synthetic ruthenium-tyrosine- manganese chemistry mimicking the donor side reactions of Photosystem II. Tyrosine and tryptophan residues were linked to ruthenium photosensitizers, which resulted in model complexes for proton-coupled electron transfer from amino acids. A new mechanistic model was proposed and used to design complexes in which the mechanism could be switched between concerted and step-wise proton-coupled electron transfer. Moreover, a manganese dimer linked to a ruthenium complex could be oxidized in three successive steps, from Mn 2 II,II to Mn2 III,IV by the photo-oxidized ruthenium sensitizer. This was possible thanks to a charge compensating ligand exchange in the manganese complex. Detailed studies of the ligand exchange suggested that at high water concentrations, each oxidation step is coupled to a proton-release of water-derived ligands, analogous to the oxidation steps of the manganese cluster of Photosystem II.
AB - This review focuses on our recent efforts in synthetic ruthenium-tyrosine- manganese chemistry mimicking the donor side reactions of Photosystem II. Tyrosine and tryptophan residues were linked to ruthenium photosensitizers, which resulted in model complexes for proton-coupled electron transfer from amino acids. A new mechanistic model was proposed and used to design complexes in which the mechanism could be switched between concerted and step-wise proton-coupled electron transfer. Moreover, a manganese dimer linked to a ruthenium complex could be oxidized in three successive steps, from Mn 2 II,II to Mn2 III,IV by the photo-oxidized ruthenium sensitizer. This was possible thanks to a charge compensating ligand exchange in the manganese complex. Detailed studies of the ligand exchange suggested that at high water concentrations, each oxidation step is coupled to a proton-release of water-derived ligands, analogous to the oxidation steps of the manganese cluster of Photosystem II.
UR - http://www.scopus.com/inward/record.url?scp=33646575321&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33646575321&partnerID=8YFLogxK
U2 - 10.1007/s11120-005-9005-0
DO - 10.1007/s11120-005-9005-0
M3 - Review article
C2 - 16416050
AN - SCOPUS:33646575321
VL - 87
SP - 25
EP - 40
JO - Photosynthesis Research
JF - Photosynthesis Research
SN - 0166-8595
IS - 1
ER -