Sökning: "absorption anisotropy"
Visar resultat 1 - 5 av 49 avhandlingar innehållade orden absorption anisotropy.
1. Dynamics of Excitation Transfer and Charge Separation in Polymeric Semiconductors
Sammanfattning : Dynamics of optically excited electronic states have been studied in solid films and solutions of semiconducting polymers and model compounds. Transient absorption, monitored in the spectral range from 0.9 eV to 2.5 eV with a time resolution of about 100 fs, was the main experimental technique. LÄS MER
2. Collision-induced Absorption and Anisotropy of the Intermolecular Potential
Sammanfattning : .... LÄS MER
3. Conformational and Dynamical Aspects of Conjugated Polymers and Oligomers of Interest for Photoluminescence
Sammanfattning : Transient absorption laser spectroscopy and resonance Raman spectrscopy have been used to study conjugated polymers and oligomers. To extract more information the measurements have been compared to computer simulations and calculations. LÄS MER
4. The Fate of Electronically Excited States : Ultrafast Electron and Energy Transfer in Solvated Donor-Acceptor Systems
Sammanfattning : Processes where a molecule absorbs visible light and then disposes of the excess energy via electron/energy transfer reactions have an important role both in nature (e.g. in photosynthesis) and in many technical applications (e.g. LÄS MER
5. Electronic and Vibrational Coherence in Photosynthetic and Model Systems
Sammanfattning : Ultrafast optical response and excitation energy dynamics in light harvesting pigment-protein complexes and in a few model systems have been studied both experimentally and theoretically. Femtosecond light pulses were employed to excite the system and monitor the subsequent time evolution of the transient absorption kinetics and anisotropy. LÄS MER