Sökning: "proton transfer pathway"

Visar resultat 21 - 25 av 27 avhandlingar innehållade orden proton transfer pathway.

  1. 21. Mechanisms of Anion Reactions from the lab to ionospheres

    Författare :Fredrik Lindén; Wolf D. Geppert; Henrik Cederquist; Henning Zettergren; Einar Uggerud; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ab initio; anion; complex molecules; cross section; electron transfer; heavy ions; ionosphere; nitriles; quantum chemistry; spectroscopy; kemisk fysik; Chemical Physics;

    Sammanfattning : A multitude of heavy neutral and ionic molecules have been discovered by the Cassini Plasma Spectrometer in the ionosphere of Saturn's largest moon Titan. However, only three cyano anions were explicitly identified there, namely CN-, C3N- and C5N-. LÄS MER

  3. 22. Development and Mechanistic Studies of Molecularly Defined Water Oxidation Catalysts : Catalysts for a Green and Sustainable Future

    Författare :Markus Kärkäs; Björn Åkermark; Jean-François Nierengarten; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; artificial photosynthesis; water oxidation; photochemistry; electrochemistry; organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis deals with the development of complexes that are active catalysts for H2O oxidation. Promoting proton-coupled electron transfer has been a highly important feature in the development of these catalysts. LÄS MER

  4. 23. Electrochemical reduction of protons and organic molecules in hydrogen technologies : Liquid Organic Hydrogen carrier and Hydrogen Evolution

    Författare :Hamid Ghorbani Shiraz; Magnus Berggren; Xavier Crispin; Ola Wendt; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrogen Storage; LOHC; Hydrogen Evolution; Electrocatalyst;

    Sammanfattning : In accordance with preventable actions to mitigate the effect of climate change in the modern societal applications, renewable energy is an unavoidable and decisive factor in the energy industry. The energy sources that offer non-depleted and environment-friendly pathways for the energy sector are in focus. LÄS MER

  5. 24. The structure of phenol hydroxylase and its relation to other flavoenzymes

    Författare :Cristofer Enroth; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The NADPH-dependent flavin monooxygenase phenol hydroxylase catalyses the first step in the microbial degradation pathway of phenol and several phenol derivatives. It catalyses the introduction of a hydroxyl group in the ortho-position on the aromatic ring. LÄS MER

  7. 25. Quantum Chemical Studies of Mechanisms and Stereoselectivities of Organocatalytic Reactions

    Författare :Peter Hammar; Hans Ågren; Fahmi Himo; Gregori Ujaque; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Theoretical chemistry; Teoretisk kemi; Organic chemistry; Organisk kemi;

    Sammanfattning : As the field of organocatalysis is growing, it is becoming more important to understand the specific modes of action of these new organic catalysts. Quantum chemistry, in particular density functional theory, has proven very powerful in exploring reaction mechanisms as well as selectivities in organocatalytic reactions, and is the tool used in this thesis. LÄS MER