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 “"ESIPT"”.
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ESIPT-Enabled Alkyne Migration Provides Rapid Access to Benzoxazinones
<p>Benozoxazinones have long been of interest to agrochemical scientists and medicinal chemists because of their widespread biological activity. These scaffolds are also of interest to synthetic chemists, who recognize the utility of benzoxazinones for accessing functionalized heterocycles. The use …
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Excited state intramolecular proton transfer (ESIPT) to nitrogen in heterocyclic compounds
Excited state intramolecular proton transfer (ESIPT) reactions have aroused considerable interest in the last 10-15 years. The ESIPT reaction is normally extremely rapid and yields excited species of considerably lower energy than the initial Franck-Condon excited state. ESIPT has therefore been …
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Femtosecond Laser Interactions In The Condensed Phase: Application to Transient Absorption and Materials Processing
… to the excited tautomer arising from ESIPT was observed throughout the visible wavelength range (400 - 700 nm). In cyclohexanea nd acetonitriles olutions, ESIPT was found to be so rapid that it was only possible to assign a time constant < 35 fs to the process. In ethanol, however, a …
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Ab Initio Studies of Intramolecular Proton Transfer and Electronic Relaxation
"Excited state intramolecular proton transfer (ESIPT) and electronic relaxation were explored in a variety of small molecules, using a combination of quantum chemistry and ab initio molecular dynamics. The standard level of electronic structure treatment was provided by complete active space …
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Towards novel photoswitches for applications in organic electronics
… to excited state intramolecular proton transfer (ESIPT) molecules and the background to the concept. This leads into a review on the applications of the material and how this molecule can potential be used as photoswitch. This work is centred around the incorporation of the ultra-fast ESIPT within …
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Control of Energy Transfer and Molecular Energetics using Photonic Nanostructures
… Excited State Intramolecular Proton Transport (ESIPT) in HMPP. In the second case, we strongly couple multiple vibronic transitions in another organic molecule, diindenoperylene (DIP), to surface plasmons and demonstrate the resulting changes in emission properties at different temperatures.</p>
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Excited state proton transfer in 2-substituted benzothiazoles
… of excited state intramolecular proton transfer (ESIPT) in these compounds. A study of the photophysics of HBT in non-polar and alcoholic mixtures for temperatures in the range 96-298K has been made using the Berlin synchrotron source, BESSY. In all solvents a rise in both fluorescence quantum …
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Exploring hetero-atom derivatization in maltols and flavonols : the effect on reactivity of flavonol dioxygenation.
… excited state intramolecular proton transfer (ESIPT). Their photophysical and photochemical properties have aided in their them finding applications as fluorescence probes for various analytes. Bacteria and fungi have evolved to fight the anti-microbial effects of flavonols with the use of …
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Photoassisted Synthesis of Complex Polyheterocycles via Rational Design of Tailored Photoprecursors
… excited state intramolecular proton transfer (ESIPT) from photoprecursors that could be trapped intramolecularly by tethered unsaturated pendants. Understanding intramolecular cycloaddition of azaxylylenes allows for the access to other derivatives of these complex molecules, with a particular …