Search for dissertations about: "natural dyes"
Showing result 1 - 5 of 92 swedish dissertations containing the words natural dyes.
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1. Cellular Dyes and Bioactive Peptides - Cell Membrane Interactions and Cellular Uptake
Abstract : Knowledge about mechanisms behind interactions of molecules with biomembranes and cellular uptake is very important for understanding biological processes and for drug design. The work described in this thesis has focused on interactions of cellular dyes and bioactive peptides with cells and the cell membrane. READ MORE
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2. Determination of Banned Azo Dyes in Leather
University dissertation from Department of Analytical Chemistry, Lund UniversityAbstract : Dyes are commercially indispensable and the expanding industry offers a complete palette of colors. Azo dyes constitute the largest chemical class of synthetic dyes because of their versatility, low price, and ease of production. READ MORE
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3. Groove-binding Unsymmetrical Cyanine Dyes for DNA Applications
University dissertation from Department of Analytical Chemistry, Lund UniversityAbstract : This work focuses on interactions between DNA and a group of newly developed unsymmetrical cyanine dyes. The aim of the work was to discover fluorescent dyes that can be used in biophysical studies of natural DNA where minimum perturbation of the DNA-helix is essential, where a slow dissociation rate of the dyes is needed and where the ionic strength is an important parameter. READ MORE
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4. Dyes and their adsorption onto nanocrystalline TiO2 electrodes : Synthesis, characterisation and applications
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : The syntheses of two type of dyes (phthalocyanine and ruthenium tris-bipyridyl) are presented here. Their characterisation involves the use of cyclic voltammetry, NMR- and UV-visible spectroscopy. Once adsorbed on nanocrystalline TiO2 electrodes, their electrochemical, spectroelectrochemical and photoelectrochemical properties were investigated. READ MORE
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5. Dye-sensitized nanostructured metal oxide electrodes : Photoelectrochemical, quantum chemical and electron spectroscopic studies
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : Solar cells based on dye-Sensitized nanostructured electrodes are promising for solar energy conversion. High overall light-to-energy conversion efficiencies have been obtained for systems based on TiO2 (7%) and ZnO (2%). The photocurrent losses in these electrodes have been investigated by photoelectrochemical methods. READ MORE
