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Ruthenium(II) Polypyridyl Complexes: Applications in Artificial Photosynthesis
Stockholm University, Faculty of Science, Department of Organic Chemistry.
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Molecular mimics of PS II, which consist of a photosensitizer linked to electron acceptors/donors, are attractive candidates for the conversion of solar energy into chemical energy. Several different classes of sensitizers have been studied and among these, ruthenium(II) polypyridyl complexes continue to attract major attention.

The first part of this thesis presents the photophysical properties, stereochemistry, and general synthesis of ruthenium(II) polypyridyl complexes based on 2,2´-bipyridyl and 2,2´:6´,2´´-terpyridyl ligands. The second part deals with ruthenium(II) polypyridyl complexes linked to electron acceptors (benzoquinone, naphthalene diimide) and electron donors (phenothiazine, tyrosine, manganese complexes). Functionalized 2,2´-bipyridines and 2,2´:6´,2´´-terpyridines were synthesized and used in the stepwise assembly of the chromophore-quencher complexes. These were fully characterized and the redox properties were studied by cyclic and differential pulse voltammetry. The intramolecular charge-separated states formed after light excitation of the ruthenium(II) unit were observed by time-resolved absorption and EPR spectroscopy.

In the third part of this thesis, the synthesis and photophysical properties of a novel class of bistridentate ruthenium(II) polypyridyl complexes based on bipyridyl-pyridyl methane ligamds are discussed. The solution structures of the homoleptic and heteroleptic complexes were studied by 2D NMR techniques. The X-ray structure of one of the homoleptic complexes has been solved. The effect on the excited state lifetime for these ruthenium(II) complexes compared to the parent [Ru(tpy)2]2+ is discussed. Finally, in one of the heteroleptic complexes an interesting reversible linkage iomerization was observed that could be induced either electrochemically or chemically.

Place, publisher, year, edition, pages
Stockholm: Institutionen för organisk kemi , 2004. , 60 p.
Keyword [en]
Organisk kemi
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-93ISBN: 91-7265-852-5 (print)OAI: oai:DiVA.org:su-93DiVA: diva2:200665
Public defence
2004-04-23, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 12 A, Stockholm, 10:00
Opponent
Supervisors
Available from: 2004-04-01 Created: 2004-04-01 Last updated: 2014-02-24Bibliographically approved
List of papers
1. Electron Donor-Acceptor Dyads and Triads Based on Tris(bipyridine)ruthenium(II) and Benzoquinone: Synthesis, Characterization, and Photoinduced Electron Transfer Reactions
Open this publication in new window or tab >>Electron Donor-Acceptor Dyads and Triads Based on Tris(bipyridine)ruthenium(II) and Benzoquinone: Synthesis, Characterization, and Photoinduced Electron Transfer Reactions
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2003 In: Inorganic Chemistry, ISSN 0020-1669, Vol. 42, no 17, 5173-5184 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-25841 (URN)
Note
Part of urn:nbn:se:su:diva-93Available from: 2004-04-01 Created: 2004-04-01Bibliographically approved
2. Electron Donor-Acceptor Dyads Based on Ruthenium(II) Bipyridine and Terpyridine Complexes Bound to Naphthalenediimide
Open this publication in new window or tab >>Electron Donor-Acceptor Dyads Based on Ruthenium(II) Bipyridine and Terpyridine Complexes Bound to Naphthalenediimide
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2003 In: Inorganic Chemistry, ISSN 0020-1669, Vol. 42, no 9, 2908-2918 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-25842 (URN)
Note
Part of urn:nbn:se:su:diva-93Available from: 2004-04-01 Created: 2004-04-01Bibliographically approved
3. Intramolecular charge separation in a hydrogen bonded tyrosune-ruthenium(II) baphthalene diimide triad
Open this publication in new window or tab >>Intramolecular charge separation in a hydrogen bonded tyrosune-ruthenium(II) baphthalene diimide triad
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2004 (English)In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, 194-195 p.Article in journal (Refereed) Published
National Category
Organic Chemistry
Identifiers
urn:nbn:se:su:diva-25843 (URN)10.1039/B308101J (DOI)
Note

Part of urn:nbn:se:su:diva-93

Available from: 2004-04-01 Created: 2004-04-01 Last updated: 2017-12-13Bibliographically approved
4. A tridentate ligand for preparation of bisterpyridine-like ruthenium(II) complexes with an increased excited state lifetime
Open this publication in new window or tab >>A tridentate ligand for preparation of bisterpyridine-like ruthenium(II) complexes with an increased excited state lifetime
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2004 In: Inorganic Chemistry Communications, ISSN 1387-7003, Vol. 7, no 3, 337-340 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-25844 (URN)
Note
Part of urn:nbn:se:su:diva-93Available from: 2004-04-01 Created: 2004-04-01Bibliographically approved
5. Linkage Isomerism in a Bistridentate Ruthenium(II) Complex
Open this publication in new window or tab >>Linkage Isomerism in a Bistridentate Ruthenium(II) Complex
Manuscript (Other academic)
Identifiers
urn:nbn:se:su:diva-25846 (URN)
Note
Part of urn:nbn:se:su:diva-93Available from: 2004-04-01 Created: 2004-04-01 Last updated: 2010-01-13Bibliographically approved

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