Sökning: "furan"

Visar resultat 11 - 15 av 21 avhandlingar innehållade ordet furan.

  1. 11. Resonant multi-photon ionisation studies of high-energy states in small molecules

    Författare :Marica Sjödin; Lars-Erik Berg; Arne Rosén; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : This thesis describes separate studies of high-energy Rydberg and ion-pair states in small molecules using resonant multi-photon ionisation spectroscopy. * OODR/REMPI study of ungerade Rydberg states in O2 The energy region between 75000 and 99900 cm-1 of O2 has been studied using optical-optical double resonance (OODR) with resonance enhanced multi-photon ionisation (REMPI). LÄS MER

  3. 12. Synthesis and Structure of Novel G-Protein Coupled Receptor Ligands

    Författare :Magnus Brisander; Tommy Liljefors; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; strukturkemi; Structural Chemistry;

    Sammanfattning : A method based on h6-arenetricarbonylchromium chemistry has been developed for the synthesis of enantiopure 4-alkylated 3-(dipropylamino)chromans. The stereochemistry of these new serotonergic ligands was determined by a combination of X-ray crystallography, NMR spectroscopy and chemical correlation. LÄS MER

  4. 13. Stereoselective synthesis of semiochemicals related to pine sawflies

    Författare :Ove Nordin; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis describes the stereochemistry and charactericsof (–)-1,6-germacradien-5-ol, isolated from the larvaldefence substance of the pine sawflyNeodiprion sertiferand from the needles of Scots pine,Pinus sylvestris. The conformational behaviour of thissesquiterpene alcohol was investigated by molecular mechanicsstudies (MM2) and NMR. LÄS MER

  5. 14. Yeasts as cellular factories: Saccharomyces cerevisiae strains with improved inhibitor-tolerance to furaldehydes via a mutant alcohol dehydrogenase- and- Human ameloblastin production in Pichia pastoris

    Författare :Boaz Laadan; Teknisk mikrobiologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Several yeast species, usually engineered by humans in order to produce compounds of biotechnological interests, are currently used as cellular factories. This thesis presents two main themes. LÄS MER

  7. 15. Photo-induced molecular processes and charge recombination reactions driven by non-adiabatic couplings

    Författare :Michael Stenrup; Åsa Larson; Horst Köppel; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Non-adiabatic processes; Photophysics; Photochemistry; Radiationless deactivation; Conical intersections; Five-membered aromatic heterocyclic compounds; Mutual neutralization; Dissociative recombination; kemisk fysik; Chemical Physics;

    Sammanfattning : This thesis is based on a number of theoretical studies of molecular processes in which non-adiabatic effects play a crucial role. The main part is devoted to the photophysics and photochemistry of five-membered aromatic heterocyclic compounds, with particular focus on furan and thiophene. LÄS MER