Search for dissertations about: "amphiphiles"

Showing result 1 - 5 of 23 swedish dissertations containing the word amphiphiles.

2. 1. Concentrated DNA-amphiphiles Structure, Hydration, and Dynamics

   Author : Cecilia Leal; Fysikalisk kemi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; amphiphiles; DNA; Physical chemistry; diffusion NMR; solid-state NMR; electrostatics; dynamics; local order; Fysikalisk kemi; hydration;

   Abstract : The structure, hydration, and dynamics of concentrated DNA-amphiphile complexes were investigated by small-angle X-ray diffraction, sorption calorimetry, and nuclear magnetic resonance. A concentrated, electroneutral, DNA-amphiphile complex can be formed by mixing charge-stoichiometric solutions. READ MORE

4. 2. Ternary Block Copolymer - Water - "Oil" Systems: Effects of "Oil" Type and Block Size on Phase Behaviour and Structure

   Author : Peter Holmqvist; Fysikalisk kemi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; poly propylene oxide ; poly ethylene oxide ; poloxamer; micelles; lyotropic liquid crystals; SAXS; structure; phase behavior; self-assembly; block copolymers; amphiphiles; poly tetrahydrofurane ; Physical chemistry; Fysikalisk kemi;

   Abstract : It has recently been established in our group that amphiphilic block copolymers consisting of a hydrophilic and a hydrophobic part can self-assemble in the presence of selective solvents (“water” and “oil”) into a variety of different solution and lyotropic liquid crystalline microstructures. The effects of the “oil” type, hydrophilic block size and hydrophobic block type on the phase behavior and microstructure of ternary isothermal copolymer - oil - water systems have been addressed in this thesis. READ MORE

5. 3. Functional Cyclic Carbonate Monomers and Polycarbonates : Synthesis and Biomaterials Applications

   Author : Jonas Mindemark; Tim Bowden; Andrew Dove; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; DNA condensation; gene delivery; ionomers; polyplexes; self-assembly; amphiphiles; biodegradable; biological applications of polymers; transfection; cyclic carbonate monomers; polycarbonates; semicrystalline polymers; click chemistry; triazoles; cycloaddition; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry;

   Abstract : The present work describes a selection of strategies for the synthesis of functional aliphatic polycarbonates. Using an end-group functionalization strategy, a series of DNA-binding cationic poly(trimethylene carbonate)s was synthesized for application as vectors for non-viral gene delivery. READ MORE

6. 4. Adsorption of nonionic amphiphiles to solid surfaces

   Author : Johanna Brinck; Fysikalisk kemi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; silica; solubilisation; self assembly; ellipsometry; mixed micelles; surfactant; kinetics; Adsorption; desorption; Fysikalisk kemi;

   Abstract : In this study, the adsorption of nonionic amphiphiles from aqueous solutions to solid, planar surfaces is investigated using null ellipsometry. This technique allows independent measurements of the amounts adsorbed at the surface and of the mean optical thickness of the adsorbed layer. READ MORE

7. 5. Association of Amphiphiles and Polyelectrolytes with DNA

   Author : Yulia S Mel'nikova; Fysikalisk kemi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; cryo-TEM; SAXS; fluorescence microscopy; DNA condensation; DNA-polyelectrolyte; DNA- amphiphile interactions; Fysikalisk kemi;

   Abstract : DNA- cationic amphiphile and DNA-cationic polymer systems were studied with respect to the intermolecular interactions, as well as structure and stability of formed complexes. The thesis is divided in two parts: one section is a summary and the other section contains five papers. READ MORE