Sökning: "triplet state"
Visar resultat 1 - 5 av 77 avhandlingar innehållade orden triplet state.
1. Transient State Fluorescence Microscopy - method development and biological applications : Exploiting the dark states of fluorophores to measure oxygen concentrations, redox state, Förster resonance energy transfer and membrane viscosity
Sammanfattning : Due to their long lifetime, triplet, redox and other transient states of fluorophores are highly sensitive to the micro-environment. Imaging their spatial distribution in biological samples can therefore help answer interesting questions about the metabolism, molecular interactions and dynamics in living cells. LÄS MER
2. Ground and Excited State Aromaticity : Design Tools for π-Conjugated Functional Molecules and Materials
Sammanfattning : The main focus of this thesis is on the aromaticity of the ground state and electronically excited states of π-conjugated molecules and polymers, as well as how aromaticity is connected to their properties.The electronic structures of polybenzenoid hydrocarbons (PBHs) were explored through density functional theory (DFT) calculations and the π-component of the electron localization function (ELFπ). LÄS MER
3. Photon Upconversion through Triplet-Triplet Annihilation: Towards Higher Efficiency and Solid State Applications
Sammanfattning : The sun is the only renewable energy source that can accommodate humanity’s energyneeds today and in the foreseeable future. The sunlight reaching the planet’s surfaceis filtrated through the atmosphere, reducing its UV-light intensity in the 300-400 nmrange, which indeed can be harmful to life as we know it in too large doses. LÄS MER
4. Spin-Orbit and Spin-Spin Coupling in the Triplet State
Sammanfattning : The underlying theory of “Spin” of an electron and its associated inter-actions causing internal fields and spectral shift to bulk-magnetism iswell established now. Our understanding of spin properties is significant andmore useful than ever before. LÄS MER
5. Excited State Aromaticity and Antiaromaticity : Fundamental Studies and Applications
Sammanfattning : The central theme of this thesis is the ability to tune various molecular properties by controlling and utilizing aromaticity and antiaromaticity in the lowest electronically excited states. This investigation is based on qualitative theory, quantum chemical (QC) calculations and experimental work. LÄS MER