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Showing 1 to 18 of 18 for “"Photoinduced Electron Transfer"”.
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Fluorescent chemosensors for metal ions based on photoinduced electron transfer (PET) from sulfur
… transduction, and the most commonly used is photoinduced electron transfer (PET) quenching. In the majority of the examples found in the literature, PET based chemosensors focus on the use of the lone pair of electron from a benzylic nitrogen atom as electron donor for the quenching of the …
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Design, Synthesis, and Photophysical Investigation of Porphyrin-containing Polymer-wrapped Single-walled Carbon Nanotubes
… spectroscopic signatures of energy and charge transfer events and lay the groundwork for further, rational development of polymers with precisely tuned redox properties and electronic coupling with the underlying SWNT. The first design to incorporate a zinc porphyrin into the polymer backbone, …
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Development of Boronic Acid-Based Spectroscopic Sensors for Saccharides
… diboronic acid compounds with an anthracene PET (photoinduced electron transfer) system were designed and synthesized (Chapter 1). These compounds can be used as sensors for cell surface carbohydrates, such as sialyl Lewis X (sLex), which are known to be biomarkers for certain cancers. Among these …
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Photodecarboxylative additions to phthalimides and their application in the synthesis of AKS-186 and its analogues
… to establish a mechanistic understanding of the photoinduced electron transfer processes involved. N-methylphthalimide was used as a model substrate and was irradiated at λ = 300 nm in aqueous acetone and in the presence of excess amounts of potassium carboxylates, the latter generated from the …
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Photosynthetic antenna-reaction-center mimicry
… absorption of light by antenna pigments and transfer of the excitation energy to the reaction center where charge separated entities are formed via photoinduced electron transfer (PET). The synthesized artificial molecular systems are comprisedof porphyrin-fullerene, donor-acceptor entities …
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The Photophysics and Transport Properties of Non-Covalent Silicon Phthalocyanine Gold Nanoparticle Conjugates
… elucidating the role of intramolecular photoinduced electron transfer and aggregation behavior. Gel electrophoresis studies of PEGylated Au NPs described in this work provide insights on fundamental physical properties of NPs as well as the local environment through which they translate. …
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Theory and Simulations of Charge Transfer in Engineered Chemical Systems
<p>Electron transfer is an essential process for life to exist and is the working principle of electronics. Fundamental knowledge of electron transfer is crucial for understanding biological processes and developing future devices. Here, we present our theoretical and experimental efforts to …
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The synthesis of aza-dipyrromethenes as potential pdt agents and measurement of singlet oxygen generation.
… therapeutic wavelength and create 1O2 by energy transfer from the photosensitiser. As shown by others, receptors can be used to control 1O2 generation via photoinduced electron transfer (PET). The synthesis of aza-dipyrromethenes using intermediates containing pyridine groups and crown ethers was …
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OPERANDO X-RAY ABSORPTION SPECTROSCOPY STUDIES OF (PHOTO)ELECTRODE MATERIALS FOR H2 PRODUCTION/CONVERSION
… of advanced techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray absorption spectroscopy (XAS), X-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis. (2) The electrochemical performance, reaction mechanism, charge transfer …
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Electron Transfer in the Reaction Center From Rhodopseudomonas Viridis (Photosynthesis, Bioenergetics, Bacteria)
… research was the characterization of photoinduced electron transfer in the reaction center protein involved in bacterial photosynthesis of the species Rhodopseudomonas viridis. The quinone acceptor complex behaves as a two electron gate, to shuttle electrons and protons through the …
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Synthesis, morphologies and applications of polyoxometalate-containing diblock copolymers
… are regarded highly due to their excellent electron accepting capability. Combining POM clusters with diblock copolymers can lead to a fascinating class of hybrid materials where the POM cluster not only affect the selfassembly process of various diblock copolymers but also brings its unique …
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I The synthesis and coordination chemistry of novel 1,1,1-tris(aminomethyl)ethane (TAME) derived ligands and their use as size selective fluorescent zinc(II) sensors II The synthesis of strongly and weakly binding ligands with nitrogen, oxygen, and sulfur-donor groups to be used as receptors in fluorescent ratiometric indicators for transition metal ions
… design motif that is evident in many photoinduced electron transfer (PET) based metal-ion sensors. These molecules display exquisite spectroscopic selectivity for Zn(II) with target-induced fluorescence enhancements of ca. 14 and 17 respectively. The measured quantum yield for …
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Investigating New Guaiazulenes and Diketopyrropyrroles for Photonic Applications
… and optical properties for use in organic electronic devices, fluorescence bioimaging, sensors, and 3D optical data storage (ODS), among others. As a result, several molecular building blocks have been designed, allowing new frontiers to be realized. While various successful building blocks …
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Calixarene Linked Bis-Porphyrin Hosts for Fullerenes and the Assembly of Supramolecular Ferrocene-Porphyrin-Fullerene Triads
… assemblies due to their unique redox and photoelectronic properties. Upon irradiation these assemblies can undergo photoinduced electron transfer between the porphyrin donor and the fullerene acceptor, however these lifetimes are short lived. This thesis describes the synthesis of several …
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Dye-sensitized cobalt cubane: ultrafast photophysics probed by transient XUV spectroscopy
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms