Sökning: "Ruthenium II"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden Ruthenium II.

  1. 1. Ruthenium(II) Polypyridyl Complexes : Applications in Artificial Photosynthesis

    Författare :Olof Johansson; Licheng Sun; Björn Åkermark; Michael D Ward; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Organisk kemi; Chemistry; Kemi;

    Sammanfattning : 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. LÄS MER

  3. 2. DNA Interaction Dynamics of Ruthenium(II) Complexes

    Författare :Fredrik Westerlund; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; fluorescence; ruthenium; polarized spectroscopy; threading; sequence selectivity; photophysics; binding kinetics; DNA; intercalation;

    Sammanfattning : DNA-binding of small synthetic ligands is of great importance in a number of different applications, from medicine to molecular biology. This thesis focuses on interactions between DNA and ruthenium(II) complexes, in particular the dimers [µ-bidppz(L)4Ru2]4+ (L=1,10-phenanthroline (P) or L=2,2-bipyridine (B)). LÄS MER

  4. 3. DNA Interactions with Chiral Polyaza-aromatic Ruthenium(II) Complexes

    Författare :Per Lincoln; Chalmers University of Technology; []
    Nyckelord :phenanthroline; binding geometry; binding isotherm; DNA; dppz; linear dichroism; intercalation; ruthenium; cooperative binding;

    Sammanfattning : The binding to DNA of a series of chiral ruthenium complexes is studied with optical spectroscopy techniques, including isotropic absorption, linear dichroism (LD) and emission anisotropy as well as steady-state and time-resolved luminescence. The thesis focuses on the ìlight-switchî complex [Ru(phen)2dppz]2+ which binds to DNA by intercalation and luminesces when bound to DNA but not in pure buffer solution (phen=1,10-phenanthroline; dppz=dipyrido[3,2-a:2',3'-c]phenazine). LÄS MER

  5. 4. Ruthenium-Manganese Complexes as Model Systems for Artificial Photosynthesis

    Författare :Anh Tran; KTH; []
    Nyckelord :Oligopyridine; bipyridine; terpyridine; ligand synthesis; ruthenium; manganese; dipicolylamine; phenolate ligands; phosphonate; artificial photosynthesis; photosystem II;

    Sammanfattning : .... LÄS MER

  7. 5. Tuning of the Excited State Properties of Ruthenium(II)-Polypyridyl Complexes

    Författare :Maria Abrahamsson; Leif Hammarström; Hans-Christian Becker; Russell Schmehl; Uppsala universitet; []
    Nyckelord :Physical chemistry; Artificial photosynthesis; Ruthenium II ; Bistridentate complexes; Excited state lifetime; Linear donor-photosenstizer-acceptor arrays; Temperature dependence; Excited state decay; Fysikalisk kemi;

    Sammanfattning : Processes where a molecule absorbs visible light and then converts the solar energy into chemical energy are important in many biological systems, such as photosynthesis and also in many technical applications e.g. photovoltaics. LÄS MER