Sökning: "Host Guest Chemistry"

Visar resultat 16 - 20 av 27 avhandlingar innehållade orden Host Guest Chemistry.

  1. 16. Efficient Carbohydrate Synthesis By Intra- and Supramolecular Control

    Författare :Hai Dong; Olof Ramström; Ulf Nilsson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrate Chemistry; Supramolecular Control; Ambident Reactivity; Bioorganic chemistry; Bioorganisk kemi;

    Sammanfattning : The Lattrell-Dax method of nitrite-mediated substitution of carbohydrate triflates is an efficient method to generate structures of inverse configuration. In this study, the effects of the neighboring group on the Lattrell-Dax inversion were explored. LÄS MER

  3. 17. Modulation of Molecular Properties : Host–Guest Interactions for Structural Analysis and Chemical Reactions

    Författare :Sara Norrehed; Adolf Gogoll; Jerker Mårtensson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; host-guest systems; conformational analysis; NMR spectroscopy; bispidines; porphyrins; Kemi med inriktning mot organisk kemi; Chemistry with specialization in Organic Chemistry;

    Sammanfattning : This thesis concerns the construction, use and modulation of various host–guest systems, from small bispidines for binding of inorganic ions to bisporphyrin clips for supramolecular systems.Small flexible molecules undergo fast conformational movements when in solution. LÄS MER

  4. 18. Understanding Defect Structures and Host-guest Interactions in Metal-organic Frameworks

    Författare :Kang Zhengzhong; Yaoquan Tu; Lars Ojamäe; KTH; []
    Nyckelord :metal-organic framework; defects; host-guest; molecular dynamics simulation; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Sammanfattning : Metal-organic frameworks (MOFs) represent a class of crystalline porous materials with prospective applications in molecular capture, separation, storage and catalysis. It has been discovered that there exist various structural defects in MOFs, which can have dramatic impact on their properties. LÄS MER

  5. 19. Host-guest chemistry : the effect on the Z/E-selectivity in Wittig reactions in the presence of cyclodextrin

    Författare :Gunnar Westman; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  7. 20. Light-Triggered Conformational Switches for Modulation of Molecular Recognition : Applications for Peptidomimetics and Supramolecular Systems

    Författare :Magnus Blom; Adolf Gogoll; Morten Grötli; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bisporphyrin tweezers; peptidomimetics; host-guest systems; conformational analysis; supramolecular chemistry; photochemistry; Organisk kemi; Organic Chemistry; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Sammanfattning : The main focus of this thesis is on photochemical modulation of molecular recognition in various host-guest systems. This involves the design, synthesis and integration of light-triggered conformational switches into peptidomimetic guests and molecular tweezer hosts. LÄS MER