Search for dissertations about: "vibrational-relaxation"
Showing result 1 - 5 of 6 swedish dissertations containing the word vibrational-relaxation.
-
1. The photophysics and functions of some naturally occurring carotenoids
Abstract : Carotenoids are one of the most widespread and important group of pigments in Nature and they can act as light-harvesting agents, photoprotectors and antioxidants. Mechanisms of their multiple functions are not fully understood mainly because their complicated photophysics involving ?dark? excited states. READ MORE
-
2. Ultrafast, Non-Equilibrium Electron Transfer Reactions of Molecular Complexes in Solution
Abstract : Photoinduced electron transfer is a fundamentally interesting process; it occurs everywhere in the natural world. Studies on electron transfer shed light on questions about the interaction between molecules and how the dynamics of these can be utilized to steer the electron transfer processes to achieve a desired goal. READ MORE
-
3. Femtosecond Dynamics and Photochemistry in Solution
Abstract : The reaction dynamics of several polyatomic systems have been investigated in solution by femtosecond spectroscopy. Tetranitromethane-naphtalene complexes excited in the charge-transfer band at 400 nm undergo dissociative electron transfer, resulting in three primary products: [naphthalene].+, NO2 and C(NO2)3-. READ MORE
-
4. Studies of Ultrafast Relaxation and Photodissociation Processes in Solution
Abstract : This thesis focuses on femtosecond studies of relaxation and photo-induced dissociation processes in the liquid environment. Measurements are performed using both polarization sensitive and magic angle transient absorption spectroscopy with excitation wavelengths of 387 nm and 258 nm and a white light continuum probe. READ MORE
-
5. Ultrafast Dynamics in Ground and Excited States of Porphyrin Molecules
Abstract : This thesis describes inter and intramolecular dynamics in porphyrin molecules. To create a basis for understanding the energy and electron transfer processes in photosynthesis, the ultrafast dynamics of monomeric chlorophyll a, chlorophyll b and bacteriochlorophyll a were studied with ultrashort laser pulses. READ MORE