Sökning: "Ruthenium"

Visar resultat 6 - 10 av 190 avhandlingar innehållade ordet Ruthenium.

  1. 6. Ruthenium-catalyzed C-H Functionalization of (Hetero)arenes

    Författare :Karthik Devaraj; Lukasz T. Pilarski; Victor A. Snieckus; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; catalysis; C-H activation; heterocycles; ruthenium; aryne precursor; silylation; gramine;

    Sammanfattning : This thesis concerned about the Ru-catalyzed C-H functionalizations on the synthesis of 2-arylindole unit, silylation of heteroarenes and preparation of aryne precursor.In the first project, we developed the Ru-catalyzed C2-H arylation of N-(2-pyrimidyl) indoles and pyrroles with nucleophilic arylboronic acids under oxidative conditions. LÄS MER

  3. 7. Artificial Water Splitting: Ruthenium Complexes for Water Oxidation

    Författare :Lele Duan; Licheng Sun; Matthias Beller; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; water oxidation; ruthenium; electrochemistry; DFT calculation; photoelectrochemistry; negatively charged ligand; catalyst;

    Sammanfattning : This thesis concerns the development and study of Ru-based water oxidation catalysts (WOCs) which are the essential components for solar energy conversion to fuels. The first chapter gives a general introduction about the field of homogenous water oxidation catalysis, including the catalytic mechanisms and the catalytic activities of some selected WOCs as well as the concerns of catalyst design. LÄS MER

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

    Författare :Per Lincoln; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 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. 9. Electron Transfer in Ruthenium-Manganese Complexes for Artificial Photosynthesis : Studies in Solution and on Electrode Surfaces

    Författare :Malin L. A. Abrahamsson; Gerald J. Meyer; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Artificial photosynthesis; electron transfer; energy transfer; ruthenium; manganese; titanium dioxide; Fysik; Physics; Fysik; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : In today’s society there is an increasing need for energy, an increase which for the most part is supplied by the use of fossil fuels. Fossil fuel resources are limited and their use has harmful effects on the environment, therefore the development of technologies that produce clean energy sources is very appealing. LÄS MER

  7. 10. Retinoids and Ruthenium Complexes: Spectroscopic Probes for Lipid Membranes

    Författare :Frida Svensson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; retinoic acid; lipid vesicle; liposomes; dipyridophenazine; orientation; linear dichroism; membrane interaction; ruthenium; lipid chain ordering;

    Sammanfattning : .... LÄS MER