Search for dissertations about: "single molecule fluorescence spectroscopy"

Showing result 1 - 5 of 34 swedish dissertations containing the words single molecule fluorescence spectroscopy.

2. 1. Single-­molecule spectroscopy of π-­conjugated polymers

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

   Abstract : 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. READ MORE

4. 2. First As Probe, Then As Function - Fluorescence in Bio-inspired Nanotechnology

   Author : Jonas Hannestad; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; self-assembly; lipid membrane; bio-inspired; FRET; light-harvesting; spectroscopy.; fluorescence; nanotechnology; single molecule fluorescence spectroscopy; DNA;

   Abstract : In this thesis, I demonstrate how fluorescence can be used in the context of bio-inspired nanotechnology, both as an indirect probe and as a function in itself. By combining principles and molecules from three different bio-molecular systems, DNA, bacterial light-harvesting complexes and cell membranes, I have constructed nano- and microscale systems for long-range excitation energy transfer, light-harvesting and reaction control. READ MORE

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

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

   Abstract : 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. READ MORE

6. 4. Single molecule dynamics

   Author : Lars Edman; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Properties found in an ensemble of molecules may not be understood if it is not possible to study each molecule one by one. This thesis is concerned with the study of the dynamic properties of individual complex biological molecules as observed by confocal single-molecule fluorescence spectroscopy. READ MORE

7. 5. Time-Varying Excitation in Fluorescence Spectroscopy for Biological Applications

   Author : Gustav Persson; Jerker Widengren; Måns Ehrenberg; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; fluorescence; spectroscopy; molecular kinetics; Physics; Fysik;

   Abstract : The focus of this thesis is to explore and use the benefits of time-varying excitation in fluorescence spectroscopy for studies of biomolecular dynamics. Two new techniques taking advantage of modulated excitation are presented. READ MORE