Sökning: "Lennart B-Å Johansson"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Lennart B-Å Johansson.
1. Extended Förster Theory of Electronic Energy Transport within Pairs of Reorienting Chromophoric Molecules
Sammanfattning : An extended Förster theory (EFT), previously derived (L. B.-Å. Johansson et al. LÄS MER
2. Electronic Energy Transfer within Asymmetric Pairs of Fluorophores: Partial Donor-Donor Energy Migration (PDDEM)
Sammanfattning : A kinetic model of electronic energy migration within pairs of photophysically non-identical fluorophores has been developed. The model applies to fluorescent groups that exhibit different photophysical and spectral properties when attached to different positions in a macromolecule. LÄS MER
3. Electronic Energy Migration/Transfer as a Tool to Explore Biomacromolecular Structures
Sammanfattning : Fluorescence-based techniques are widely used in bioscience, offering a high sensitivity and versatility. In this work, fluorescence electronic energy migration/ transfer is applied to measure intramolecular distances in two types of systems and under various conditions. LÄS MER
4. A new approach to the analyses of fluorescence depolarisation experiments in the presence of electronic energy transport
Sammanfattning : A new and general procedure is described for a detailed analysis of time-resolved fluorescence depolarisation data in the presence of electronic energy migration. An isotropic ensemble of bifluorophoric molecules (D1-R-D2) has been studied to demonstrate its utility. LÄS MER
5. Optical characterization of potential drugs and drug delivery systems
Sammanfattning : This Thesis is a characterization study on substances having potency as drugs as well as on a lipid based drug-delivery matrix. The optical properties of newly synthesized molecules with proven pilicide properties have been characterized with several spectroscopic methods. LÄS MER