Sökning: "chemical bonding"

Visar resultat 16 - 20 av 318 avhandlingar innehållade orden chemical bonding.

  1. 16. Alkylglucosides - physical chemical properties

    Författare :Frederik Nilsson; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; penetration experiment; DSC; SAXS; NMR self-diffusion; phase separation; size micro-structure; aggregate-aggregate interaction; liquid crystalline phases; micelles; alkylglucosides; phase diagrams; fluorescence.; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : The aim of this study is to characterise the physical-chemical properties of alkylglucosides. Alkylglucosides are non-ionic surfactants synthesized from glucose and a fatty alcohol. The glucose molecule constitutes the hydrophilic head group and the fatty alcohol constitutes the hydrophobic tail. LÄS MER

  3. 17. Structure and bonding of sulfur-containing molecules and complexes

    Författare :Emiliana Damian Risberg; Magnus Sandström; Ingmar Persson; Tsun-Kong Sham; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sulfur species; x-ray absorption and vibrational spectroscopy; TP-DFT calculations; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Sammanfattning : Synchrotron-based spectroscopic techniques enable investigations of the many important biological and environmental functions of the ubiquitous element sulfur. In this thesis the methods for interpreting sulfur K-edge X-ray absorption near edge structure (XANES) spectra are developed and applied for analyses of functional sulfur groups. LÄS MER

  4. 18. On the structures of flavin derivatives : crystallographic studies and a review

    Författare :Marie Leijonmarck; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A summary is given of the crystal structures of one oxidized and two fully reduced flavin derivatives and of one zinc-riboflavin derivative. Structural results from single-crystal studies of thirty-four other flavin compounds and two flavoproteins are included in a review. LÄS MER

  5. 19. Studies of structural transitions in trimetal pentoxides of titanium and vanadium : from the growth of pure single-crystals to critical phenomena at the transition points

    Författare :Sam-Hyo Hong; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The growth of highly pure single crystals of titanium (Ti2O3-TiO2) and vanadium (V203-V205) oxides by chemical transport reactions with TeCl4 as a transport medium is discussed. The chemical transport mechanisms, transport rates and oxidation states of the transported crystals in the titanium and vanadium oxide systems are compared. LÄS MER

  7. 20. Functionalization and Characterization of Carbon Based Nanomaterials for Electronics, Composite and Biomedical Applications

    Författare :Nan Wang; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; carbon nanomaterials; flexible electronics; hybrid nanowires; functionalization; graphene;

    Sammanfattning : Surface functionalization of nanomaterials to combine different material’s properties together opens up unlimited possibilities for both academic research and industrial applications. In this thesis, flexible and scalable chemical approaches to functionalize carbon nanomaterials (CNMs) are developed for different applications, including electronics, composite and biomedical applications. LÄS MER