Search for dissertations about: "fluorescence quenching"

Showing result 1 - 5 of 53 swedish dissertations containing the words fluorescence quenching.

  2. 1. Competitive Protein Adsorption during Spray-drying

    Author : Karin Landström; Livsmedelsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Livsmedelsteknik; Food and drink technology; pyrene; quenching; fluorescence; beta-casein; beta-lactoglobulin; bovine serum albumin; milk proteins; Spray-drying; competitive adsorption; Surface and boundary layery chemistry; Ytkemi; gränsskikt;

    Abstract : The aim of this thesis was to study competitive adsorption of milk proteins during spray-drying. For this purpose, a new surface sensitive method was developed which measures the quantitative amount of specific proteins at the powder surface. READ MORE

  4. 2. Unravelling Sensitisation and Quenching Pathways in Lanthanide Luminophores

    Author : Salauat Kiraev; Eszter Borbas; Thomas Just Sørensen; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lanthanide; Luminescence; Sensitisation; Quenching; Energy Transfer; Electron transfer; Kemi; Chemistry;

    Abstract : Lanthanide (Ln) ions find use in cellular detection and probing of many analytes, owing to their unique photophysical properties. However, to make the Ln emission efficient, one has to develop a light-harvesting antenna, which is an organic chromophore that absorbs and transfers energy to the Ln. READ MORE

  5. 3. Energy Transfer Processes and Quenching Pathways in Lanthanide Complexes: The Role of Structural Changes

    Author : Daniel Kocsi; K. Eszter Borbas; Raphaël Tripier; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lanthanide; luminescence; sensitisation; quenching; electron transfer; organic chromophores; fluorination; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Abstract : Due to their unique magnetic and luminescent properties, trivalent lanthanides (Ln(III)) have been widely utilised in cellular imaging. Ln(III) luminescence is usually sensitized by a light-harvesting ‘antenna’, a chromophore that can transfer the excitation energy to the Ln(III). READ MORE

  6. 4. Photo-induced dark states influorescence spectroscopy – investigations & applications

    Author : Andriy Chmyrov; Jerker Widengren; Johan Hofkens; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fluorescence correlation spectroscopy; triplet state; isomerisation; photobleaching; quenching; diffusion; total internal reflection; interface; Spectroscopy; Spektroskopi;

    Abstract : This thesis focuses on investigations of transient dark states of fluorescentmolecules using spectroscopic techniques. The main purpose is to show andconvince the reader that transient dark states are not always a nuisance, butalso represent an additional source of information. READ MORE

  7. 5. Short-Pulse Photofragmentation and Fluorescence-based Diagnostics - Development and Applications

    Author : Malin Jonsson; Förbränningsfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydroxyl radical OH ; Short-pulse excitation; Photofragmentation; Combustion diagnostics; Laser-induced fluorescence; Hydrogen peroxides; Collisional quenching; Fysicumarkivet A:2015:Jonsson;

    Abstract : The work presented in the thesis covers the use of laser-induced fluorescence (LIF) and photofragmentation laser-induced fluorescence (PFLIF) with short laser pulses to determine species concentrations in different combustion environments. To attain quantitative species concentrations using LIF investigations of the influence of collisional quenching on the fluorescence signal strength is of vital importance, which can be done by measuring the fluorescence lifetime. READ MORE