Search for dissertations about: "NMR spectroscopy"

Showing result 1 - 5 of 275 swedish dissertations containing the words NMR spectroscopy.

  1. 1. Physico-Chemical Properties of Plant Polysaccharides Investigated with NMR Techniques

    University dissertation from Chalmers University of Technology

    Author : Åsa Östlund; Chalmers tekniska högskola.; Chalmers University of Technology.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spektroskopi; Spectroscopy; Yt- och kolloidkemi; Surface and colloid chemistry; Cellulose solution; Chemical shift imaging; Cryoporometry; Dissolution of cellulose; Fiber hornification; 19F NMR; Gelation of cellulose; 1H NMR; Molecular weight; NMR diffusometry; Pore size distribution; Pulsed field gradient NMR; Self-diffusion; TBAF DMSO; Xylan;

    Abstract : In the lead of developing new biomaterials from plant sources it is of importance to be able to control and vary the properties, such as flexibility, strength, and hygroscopicity of the final material. These properties are highly directed by the interactions between constituents on a molecular level. READ MORE

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

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

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

    Abstract : 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. READ MORE

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

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

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

    Abstract : 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. READ MORE

  4. 4. Characterizing Chromatography Media NMR-based Approaches

    University dissertation from Stockholm : KTH Royal Institute of Technology

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

    Abstract : 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. READ MORE

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

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

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

    Abstract : 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. READ MORE