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Showing 1 to 8 of 8 for “"excimer formation"”.
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Fluorination Effect on the Conformational Properties of Alkanes
… chains using emission. We have found that the excimer formation for the fluorinated pyrene monomers is highly dependent on concentration and is less efficient than for pyene. Excimer formation for the fluorinated pyrene dimers is much more efficient than for the fluorocarbon monomers and is …
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A Computational Investigation of the Photophysical, Electronic and Bonding Properties of Exciplex-Forming Van der Waals Systems
… previously reported in the literature. Tuning of excimer formation was explained in the [Au(SCN)2]22- by interactions with the counterion. Weak bonding interactions and luminescent transitions were explained by calculation of Hg dimers, excimers and exciplexes formed with noble gases.
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Synthesis, Self-Assembly and Photophysical Properties of Multichromophoric Systems
… H-aggregates of the pyrene moieties give rise to excimer formation ─ i.e. an excited dimer. Hydrogen-bonding and steric effects have almost no influence on the self-assembly process, but they do determine the excimer formation rate within the supramolecular aggregates. Upon transition to the …
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The use of novel poly(allylamine) based amphiphilic polymers for drug delivery.
… planar hydrophobic ring structures resulting in excimer formation. The theory of excimer formation was confirmed by the observation of peak shifting on the emission spectra of the compounds in water over a large concentration range (0.023 “ 3 mgmL-1). The drug loading potential of the polymers …
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FLUORESCENT PROBE INVESTIGATIONS OF MICROENVIRONMENTS OF ANALYTICAL INTEREST (REVERSED-PHASE, POLYETHYLENIMINE, POLARIZATION)
… chromatography, which is based on double layer formation on a dynamic surface.</p><p>Polyelectrolyte-counterion binding strength and proximity were studied using a three component system: metals bound to polyethylenimine (PEI) and pyrenesulfonate counterion probes. Metals altered rates of …
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Design and Synthesis of Photoactive Metal-Organic Frameworks for Photon Upconversion and Energy Transfer Studies
… hand, the 1,4-MOF displays both monomeric and excimeric emission, with corresponding lifetime values of 7.5 ± 0.01 and 19.9 ± 0.1, respectively and a quantum yield of 0.002 ± 0.0001. The propensity for photon upconversion through sensitized triplet-triplet annihilation (TTA-UC) was probed in …
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Supramolecular Nanofibers - Preparation, Structure-Property Relations, and Applications
… influences were, besides others, detected by excimer formation in dilute solution, in the aggregated state and in solid films. It was demonstrated that stacking of the pyrene units is the driving force of the self-assembly process in solution in this system. However, hydrogen bonds are …
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Molecular Encapsulation of Conjugated Polymers for Organic Electronics
… of different techniques to lower the formation of aggregates in conjugated polymers. It describes both non-covalent and covalent encapsulations that have been previously employed, offering examples of their efficacy in reducing nonradiative decay processes. Past research on molecularly …