Logo: to the web site of Uppsala University

uu.sePublications from Uppsala University
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Synthesis and redox properties of a [meso-tris(4-nitrophenyl) corrolato]Mn(III) complex.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry.
Show others and affiliations
2005 (English)In: Journal of Porphyrins and Phthalocyanines, ISSN 1088-4246, E-ISSN 1099-1409, no 9(6), p. 379-386Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2005. no 9(6), p. 379-386
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-95875OAI: oai:DiVA.org:uu-95875DiVA, id: diva2:170241
Available from: 2007-05-04 Created: 2007-05-04 Last updated: 2017-12-14
In thesis
1. Molecular Approaches to Photochemical Solar Energy Conversion: Towards Synthetic Catalysts for Water Oxidation and Proton Reduction
Open this publication in new window or tab >>Molecular Approaches to Photochemical Solar Energy Conversion: Towards Synthetic Catalysts for Water Oxidation and Proton Reduction
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A molecular system capable of photoinduced water splitting is an attractive approach to solar energy conversion. This thesis deals with the functional characterization of molecular building blocks for the three principal functions of such a molecular system: Photoinduced accumulative charge separation, catalytic water oxidation, and catalytic proton reduction.

Systems combining a ruthenium-trisbipyridine photosensitizer with multi-electron donors in form of dinuclear ruthenium or manganese complexes were investigated in view of the rate constants of electron transfer and excited state quenching. The kinetics were studied in the different oxidation states of the donor unit by combination of electrochemistry and time resolved spectroscopy. The rapid excited state quenching by the multi-electron donors points to the importance of redox intermediates for efficient accumulative photooxidation of the terminal donor.

The redox behavior of manganese complexes as mimics of the water oxidizing catalyst in the natural photosynthetic reaction center was studied by electrochemical and spectroscopic methods. For a dinuclear manganese complex ligand exchange reactions were studied in view of their importance for the accumulative oxidation of the complex and its reactivity towards water. With the binding of substrate water, multiple oxidation in a narrow potential range and concomitant deprotonation of the bound water it was demonstrated that the manganese complex is capable of mimicking multiple aspects of photosynthetic water oxidation.

A dinuclear iron complex was investigated as biomimetic proton reduction catalyst. The complex structurally mimics the active site of the iron-only hydrogenase enzyme and was designed to hold a proton on the bridging ligand and a hydride on the iron centers. Thermodynamics and kinetics of the protonation reactions and the electrochemical behavior of the different protonation states were studied in view of their potential catalytic performance.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2007. p. 76
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 306
Keywords
Physical chemistry, artificial photosynthesis, solar fuel, WOC, OEC, accumulative electron transfer, hydrogenase mimic, oxygen evolution, proton reduction, water oxidation, Fysikalisk kemi
Identifiers
urn:nbn:se:uu:diva-7875 (URN)978-91-554-6889-7 (ISBN)
Public defence
2007-05-28, Häggsalen, Ångström, Uppsala, 10:00
Opponent
Supervisors
Available from: 2007-05-04 Created: 2007-05-04Bibliographically approved

Open Access in DiVA

No full text in DiVA

Authority records

Magnuson, AnnLomoth, Reiner

Search in DiVA

By author/editor
Magnuson, AnnLomoth, Reiner
By organisation
Department of Chemistry
In the same journal
Journal of Porphyrins and Phthalocyanines
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 1055 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf