Sökning: "NMR spectroscopy"

Visar resultat 1 - 5 av 310 avhandlingar innehållade orden NMR spectroscopy.

  1. 1. Exploring the structure of oligo- and polysaccharides Synthesis and NMR spectroscopy studies

    Detta är en avhandling från Stockholm : Department of Organic Chemistry, Stockholm University

    Författare :Hanna Jonsson; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; NMR spectroscopy; synthesis; lipopolysaccharides; conformational studies; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi; organisk kemi; Organic Chemistry;

    Sammanfattning : A deeper understanding of the diversity of carbohydrates and the many applications of oligo- and polysaccharides found in nature are of high interest. Many of the processes involving carbohydrates affect our everyday life. This thesis is based on six papers all contributing to an extended perspective of carbohydrate property and functionality. LÄS MER

  2. 2. Conformations of Flexible Oligosaccharides Molecular Simulations and NMR spectroscopy

    Detta är en avhandling från Stockholm : Department of Organic Chemistry, Stockholm University

    Författare :Robert Pendrill; Stockholms universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; Oligosaccharide; Conformation; NMR spectroscopy; MD simulations; Organic Chemistry; organisk kemi;

    Sammanfattning : The conformational preferences of several oligosaccharides are investigated herein using a combination of NMR spectroscopy and molecular dynamics (MD) simulations, focusing on the torsion angles associated with the glycosidic linkages.Strategies for obtaining usable J-HMBC spectra for carbons with an adjacent 13C label are described. LÄS MER

  3. 3. Characterizing Chromatography Media NMR-based Approaches

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Fredrik Elwinger; KTH.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chromatography; nuclear magnetic resonance; NMR; self-diffusion; magic-angle spinning; quantitative; distribution coefficient; pore size; Kemi; Chemistry;

    Sammanfattning : Liquid chromatography is an essential technique in manufacturing biopharmaceuticals where it is used on all scales from analytical applications in R&D to full-scale production. In chromatography the target molecule, typically a protein, is separated and purified from other components and contaminants. LÄS MER

  4. 4. Structure, dynamics and reactivity of carbohydrates NMR spectroscopic studies

    Detta är en avhandling från Stockholm : Department of Organic Chemistry, Stockholm University

    Författare :Jerk Rönnols; Stockholms universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; Conformation; NMR spectroscopy; Hydrogen bond; Organic Chemistry; organisk kemi;

    Sammanfattning : The main focus of this thesis is on the ring conformations of carbohydrate molecules; how the conformational equilibria and the rates of the associated interconversions are affected by the molecular constitution and their surroundings.The conformational equilibria of a group of amine linked pseudodisaccharides, designed as potential glycosidase inhibitors, comprising α-D-altrosides are described in Chapter 3. LÄS MER

  5. 5. Molecular Association Studied by NMR Spectroscopy

    Detta är en avhandling från Stockholm : KTH

    Författare :Lars Nordstierna; KTH.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NMR; spin relaxation; self-diffusion; intermolecular cross-relaxation; chemical shift; fluorinated surfactants; hydrogenated surfactant; micelle; non-ideal mixing; adsorption; hydration; surfactant-protein association; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi;

    Sammanfattning : This Thesis presents studies of molecular association in aqueous solution and at the liquid/solid interface. The investigated molecular systems range from self-aggregating surfactants to hydration water in contact with micelles or individual molecules. In most studies, combinations of various NMR methods were applied. LÄS MER