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 12 of 12 for “"Photoswitch"”.
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Towards sustainable heterogenous catalysis in molecular solar thermal energy storage (MOST) systems
… second chapter concentrates on the concept of photoswitchable molecules and their integration within the MOlecular Solar Thermal (MOST) energy storage concept. A review of the most relevant literature of photoswitches, especially relating to the class of NBD/QC molecules is undertaken, …
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Towards novel photoswitches for applications in organic electronics
… devices based on organic materials are novel photoswitches. These are molecules that are able to undergo a reversible structural change under a light stimulus which gives rise to unique properties. Thus, it allows the control of properties via the use of light in a variety of applications. The …
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Quantum chemistry and surface hopping dynamics of azobenzenes
… excited states of (i) dimers, composed of two photoswitchable units placed closely side-by-side, as well as (ii) monomers and dimers adsorbed on a silicon cluster. A variety of quantum chemistry methods, capable of calculating molecular electronic absorption spectra, based on density functional …
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The Design, Preparation and Characterisation of Light-Responsive Pickering Emulsions
… particles functionalised with azobenzene-derived photoswitches to understand the key factors that determine the characteristics of light-responsive Pickering emulsions. We address their design on three distinct length scales: the photoswitch at the molecular level, the photoswitchable particle at …
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Sensing in biological systems
… of current sensors is the lack of reusability. Photoswitchable molecules present as an alternative core unit for the development of fluorescent metal ion sensors, with the potential for reversible analyte binding. The photochromic spiropyran molecule is of particular interest in our research …
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Light-induced transformations in biomembranes
… establish a regulation path based on the use of photoswitches exhibiting conformational changes in model membranes, namely, giant unilamellar vesicles (GUVs). The mechanism of the changes in the GUVs’ morphology caused by isomerization of the photosensitive molecules has been previously explored …
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Developing photoresponsive lipid nanoparticles for the triggered release of small molecules
… triggering a greater amount of release upon its photoswitch, but unfortunately the opposite was observed. However, useful insights were gained regarding the effects of the donor group on the switching capacity of 1G DASAs, the impact of the incorporation of cholesterol on a DOPC liposome, as well …
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A photoemission study of quasiparticle excitations, electron-correlation effects and magnetization dynamics in thin magnetic systems
… can be induced by means of a laser-excited photoswitch. From a comparision to micromagnetic calculations it is demonstrated that the relatively high precessional frequency observed in the experiments is directly linked to the nature of the vortex/antivortex dynamics and its response to the …
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Probing the Ultrafast Dynamics of Higher-Lying Excited States of Molecular Switches with Femtosecond Stimulated Raman Spectroscopy
… parts of the cycloreversion reaction. A second photoswitch was also studied to explore the effect of structural rigidity on the excited-state dynamics through resonance Raman methods. Studying these photoswitches with various spectroscopic methods allows us to obtain a more detailed …
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Proteolysis targeting chimeras for the directed ubiquitination of the androgen receptor
… of expanding the PROTAC toolbox. Finally, photoswitchable AR degrading PROTACs were synthesised. The photophysics and biological activity of the PROTACs were analysed. These PROTACs integrated ortho-fluoroazobenzene for light-induced conformational change. Incorporating photoswitchable …
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Mechanistic and Engineering Studies of LOV Photoreceptors in Yeast
… wavelengths of light and can become a cellular photoswitch by converting this stimulus through their attached effector domains. For instance, the Helix-Turn-Helix (HTH) DNA-binding activity of the bacterial transcription factor EL222 and the Regulator of G-protein Signaling (RGS) in the fungal …
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Harnessing Light-Responsive Structural Control in Surfactant Assemblies
… can be made light-responsive by incorporating photoswitchable chemical groups to form photosurfactants (PS). On irradiation with light, PS undergo a change in shape and polarity, which has been shown previously to affect the self-assembled LLC nanostructure. However, the mechanisms through …