Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Artificial light harvesting"”.
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DNA Origami Structures for Artificial Light-Harvesting and Optical Voltage Sensing
… we apply DNA nanotechnology for developing novel light-harvesting and optical voltage sensing nano-devices. We use the programmable positioning of dye molecules on a DNA origami plate as a mimic of a light-harvesting antenna complex required for photosynthesis. Such a structure allows us to …
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Triplet Excitons in Natural Photosynthetic and Artificial Light Harvesting Systems: Measurement and Modeling.
Under full sunlight, unprotected (Bacterio)Chlorophyll ((B)Chl) molecules photodegrade in a matter of minutes. This is the result of the generation of highly reactive singlet oxygen (1O2) by energy transfer from the (B)Chl triplet state (3(B)Chl) to the oxygen ground state. Natural photosynthetic …
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Ultrafast linear and non-linear spectroscopy : from biological light-receptors to artificial light-harvesting systems
… functiondynamics relationship in biological and artificially designed systems. The experiments presented in this work utilize femtosecond time-resolved transient absorption and transient grating as well as picosecond time-resolved fluorescence spectroscopy to investigate the photophysics and …
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Förster resonance energy transfer (FRET)-based nanophotonics using DNA origami structures
… wires and logic gates for molecular computing to artificial light harvesting systems for artificial photosynthesis. In the present cumulative doctoral thesis, different FRET systems on DNA origami structures have been designed and thoroughly analyzed. Firstly, the formation of guanine (G) …
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Optoelectronic properties and energy transport processes in cylindrical J-aggregates
The light harvesting systems of photosynthetic organisms harness solar energy by efficient light capture and subsequent transport of the light’s energy to a chemical reaction center. Man-made optical devices could benefit by mimicking these naturally occurring light harvesting processes. …
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Excited State Dynamics and Energy Transfer Studies of Aromatic Molecules
Prototypes of artificial light harvesting devices and molecular wires can be built using conjugated subunits. Electronic coupling between subunits is important for the efficiency of the energy and charge transfer events, which are the critical elements of light harvesting devices. Additionally …
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Tensor network states simulations of exciton-phonon quantum dynamics for applications in artifcial light-harvesting
Light-harvesting in nature is known to work differently than conventional man-made solar cells. Recent studies found electronic excitations, delocalised over several chromophores, and a soft, vibrating structural environment to be key schemes that might protect and direct energy transfer yielding …
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Photoluminescence studies of single-walled carbon nanotubes: Chirality-resolved length characterization and porphyrin sensitized electronic energy transfer
… that make such complexes potentially useful as artificial light-harvesting chromophores.
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Photophysics of Biological and Synthetic Multichromophoric Systems : Spectroscopic Investigations of Bacterial Light-Harvesting Complexes and of Carbonyl-Bridged Triarylamine Derivatives
… the basic building blocks for the absorption of light and the subsequent energy transfer within photosynthetic organisms. Optimized by evolutionary selection processes, they constitute an ideal blueprint for artificial, nature-inspired multichromophoric light-harvesting systems. This thesis …