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Intramolecular charge separation in a hydrogen bonded tyrosine-ruthenium(II)-naphtalene diimide triad
Stockholm University, Faculty of Science, Department of Organic Chemistry.
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2004 In: Chemical Communications, ISSN 1359-7345, no 2, 194-195 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2004. no 2, 194-195 p.
URN: urn:nbn:se:su:diva-23639OAI: diva2:193622
Part of urn:nbn:se:su:diva-417Available from: 2005-03-23 Created: 2005-03-23Bibliographically approved
In thesis
1. Ruthenium(II) Polypyridyl Complexes in Supramolecular Systems relevant to Artificial Photosynthesis
Open this publication in new window or tab >>Ruthenium(II) Polypyridyl Complexes in Supramolecular Systems relevant to Artificial Photosynthesis
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis describes the synthesis and properties of ruthenium complexes relevant to artificial photosynthesis. The work includes preparation of RuIIpolypyridine complexes as well as multi component systems where RuII(bpy)3 or RuII(tpy)2 type complexes are used as photosesnsitizers.

In the first part, the synthesis and characterisation of bipyridyl(pyridyl)methane type ligands and the corresponding ruthenium(II) bistridentate polypyridyl complexes is described. The bipyridyl-pyridyl methane type ligands were designed to increase the excited state lifetime of ruthenium(II) bisterpyridine-type complexes by altering the ligand field as compared to normal terpyridine ligands.

In the second part photoinduced electron transfer and formation of charge separated states in donor-photosensitizer dyads or donor-photosensitizer-acceptor triads is studied. The first covalently linked donor-photosensitizer-acceptor triad with tyrosine as electron donor was prepared, and long lived light induced charge separation was observed. RuIIterpyridine complexes linked to carotenoid or tyrosine were also prepared, for studies of light induced charge separation on a TiO2 surface. Tryptofan was covalently linked to Ru(bpy)3 and proton coupled electron transfer from tryptophan to photogenerated ruthenium(III) was demonstrated. A pH-dependent study of the electron transfer rate gave insight into the mechanism of proton coupled electron transfer in amino acids.

Finally, the last part of the thesis presents the preparation and properties of the first complex containing a photosensitizer covalently linked to a Fe-hydrogenase active site model.

Place, publisher, year, edition, pages
Stockholm: Institutionen för organisk kemi, 2005. 54 p.
Ruthenium complexes
National Category
Organic Chemistry
urn:nbn:se:su:diva-417 (URN)91-7155-031-3 (ISBN)
Public defence
2005-04-18, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 12 A, Stockholm, 14:00
Available from: 2005-03-23 Created: 2005-03-23 Last updated: 2014-02-24Bibliographically approved

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