Sökning: "fluorescence polarization"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden fluorescence polarization.

  1. 1. Polarization portraits of lightharvesting antennas: from single molecule spectroscopy to imaging

    Författare :Rafael Camacho Dejay; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Energy transfer; Single molecule spectroscopy; Exciton; Fluorescence microscopy; Fluorescence polarization; Light-harvesting; Chromophore; Conjugated Polymer; Photosynthesis;

    Sammanfattning : Multichromophoric systems are very important in photosynthesis and any device that uses solar energy for its operation. This is because multichromophoric light-harvesting antennas are responsible for the absorption of light and the efficient transfer of the absorbed energy toward distinct places where it is to be used or stored. LÄS MER

  3. 2. Light polarization in single molecule spectroscopy: From visualization of structural anisotropy and energy transfer to super-resolution imaging with orientational contrast

    Författare :Daniel Thomsson; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Single-molecule spectroscopy; π-conjugated polymers; blinking; fluorescence brightness; low temperature; polarization anisotropy; 2D polarization; energy transfer; super resolution; Fourier transform;

    Sammanfattning : Π-conjugated polymers are an important class of materials which can be used in e.g. photoelectric (solar cells) or electroluminescent (displays) devices. These materials are implemented in a number of applications these days since a lot is already known about them. LÄS MER

  4. 3. Multidimensional Fluorescence Polarization Imaging of Single Light Harvesting Complexes

    Författare :Sumera Tubasum; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Light Harvesting Complexes; Single Molecule Spectroscopy; Polarization Spectroscopy; Exciton Dynamics; Spectral Disorder;

    Sammanfattning : This thesis presents my research journey in the Department of Chemical Physics,Lund University. Multidimensional fluorescence polarization imaging is used to study single LH2s. The method uses linearly polarized excitation light and the emission is detected through a polarizer. LÄS MER

  5. 4. Blue Laser Source for Laser-Induced Fluorescence

    Författare :Jesper Holm; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Second Harmonic Generation; Lasers; PPKTP; ALA; Tapered laser diodes; External cavity lasers; Laser-induced fluorescence; photodynamic therapy; mTHPC;

    Sammanfattning : Laser-induced fluorescence is a clinical diagnostic tool, used for tumor demarcation and detection. The technique relies on the injection or topical application of a light sensitive drug called a photosensitizer. This substance has the ability to be accumulated to higher concentrations in cancer cells than in normal cells. LÄS MER

  7. 5. Single-­molecule spectroscopy of π-­conjugated polymers

    Författare :Oleg Mirzov; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluorescence lifetime; low temperature; spectral diffusion; blinking; MEH-PPV; Single-molecule spectroscopy; π-conjugated polymers; 2D polarization; Monte Carlo; energy transfer;

    Sammanfattning : When applied to condensed-matter samples of large organic molecules, optical spectroscopy faces the problem of inhomogeneous broadening caused by the diversity of environments and conformations that sample molecules are subjected to. This severely limits the information that can be extracted from optical spectra. LÄS MER