Search for dissertations about: "natural dyes"

Showing result 1 - 5 of 91 swedish dissertations containing the words natural dyes.

  1. 1. Cellular Dyes and Bioactive Peptides - Cell Membrane Interactions and Cellular Uptake

    Author : Maria Matson Dzebo; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Membrane Interactions; Spectroscopy; Cell-Penetrating Peptides; Bioactive Peptides; Cell Membrane; Confocal Laser Scanning Microscopy; Cellular Uptake; AF-16; Voltage-Sensitive Dyes; Cell Dyes; Antisecretory Factor; Ruthenium Complexes; Isothermal Titration Calorimetry; Flow-Cytometry;

    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

  2. 2. Determination of Banned Azo Dyes in Leather

    University dissertation from Department of Analytical Chemistry, Lund University

    Author : Lars-Henric Ahlström; Lunds universitet.; Lund University.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytisk kemi; Analytical chemistry; extraction; azo dyes; aromatic amines;

    Abstract : Popular Abstract in Swedish Azofärger är syntetiska kemikalier som används i stor utsträckning för att färga konsumtionsartiklar, t.ex. läder, textiler, mat, kosmetika. Dock kan ett fåtal av dessa färger reduktivt avspjälkas och till följd därav frigöra kancerogena aromatiska aminer. READ MORE

  3. 3. Groove-binding Unsymmetrical Cyanine Dyes for DNA Applications

    University dissertation from Department of Analytical Chemistry, Lund University

    Author : Maja Eriksson; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polarized spectroscopy; bacteriophage T5; cryo-transmission electron microscopy; dynamic light scattering; DNA; intercalation; cyanine dyes; groove-binding; fluorescence spectroscopy; gel electrophoresis;

    Abstract : 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

  4. 4. Dyes and their adsorption onto nanocrystalline TiO2 electrodes : Synthesis, characterisation and applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Viviane Aranyos; Uppsala universitet.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; organisk kemi; Organic Chemistry;

    Abstract : 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

  5. 5. Dye-sensitized nanostructured metal oxide electrodes : Photoelectrochemical, quantum chemical and electron spectroscopic studies

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Håkan Rensmo; Uppsala universitet.; Uppsala universitet.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Physical Chemistry; fysikalisk kemi; Physics; Fysik; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : 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