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Добірка наукової літератури з теми "Ground state redox potential"

Автор: Grafiati

Опубліковано: 10 березня 2023

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Статті в журналах з теми "Ground state redox potential"

1

Mohammadpourasl, Sanaz, Fabrizia Fabrizi de Biani, Carmen Coppola та ін. "Ground-State Redox Potentials Calculations of D-π-A and D-A-π-A Organic Dyes for DSSC and Visible-Light-Driven Hydrogen Production". Energies 13, № 8 (2020): 2032. http://dx.doi.org/10.3390/en13082032.

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The prediction of ground-state redox potentials by quantum chemical methods has a prominent role in the rational design of novel organic photosensitizers both for dye-sensitized solar cells (DSSCs) and photocatalytic systems for the production of H2. Indeed, the ground-state redox potential of the photosensitizers is one of the key parameters to identify the most promising candidates for such applications. Here, the ground-state redox potentials of 16 organic donor-π-acceptor D-π-A and donor-acceptor-π-acceptor D-A-π-A dyes having a medium to large size of the conjugated scaffold are evaluated

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2

Kim, Dooyoung, and Thomas S. Teets. "Strategies for accessing photosensitizers with extreme redox potentials." Chemical Physics Reviews 3, no. 2 (2022): 021302. http://dx.doi.org/10.1063/5.0084554.

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Photoredox catalysis has been prominent in many applications, including solar fuels, organic synthesis, and polymer chemistry. Photocatalytic activity directly depends on the photophysical and electrochemical properties of photocatalysts in both the ground state and excited state. Controlling those properties, therefore, is imperative to achieve the desired photocatalytic activity. Redox potential is one important factor that impacts both the thermodynamic and kinetic aspects of key elementary steps in photoredox catalysis. In many challenging reactions in organic synthesis, high redox potenti

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3

Vlcek, A. A., Elaine S. Dodsworth, William J. Pietro, and A. B. P. Lever. "Excited State Redox Potentials of Ruthenium Diimine Complexes; Correlations with Ground State Redox Potentials and Ligand Parameters." Inorganic Chemistry 34, no. 7 (1995): 1906–13. http://dx.doi.org/10.1021/ic00111a043.

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4

Bednářová, Eva, Logan R. Beck, Tomislav Rovis, et al. "Tuning the Electrochemical and Photophysical Properties of Osmium-Based Photoredox Catalysts." Synlett 33, no. 03 (2022): 247–58. http://dx.doi.org/10.1055/s-0041-1737792.

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AbstractThe use of low-energy deep-red (DR) and near-infrared (NIR) light to excite chromophores enables catalysis to ensue across barriers such as materials and tissues. Herein, we report the detailed photophysical characterization of a library of OsII polypyridyl photosensitizers that absorb low-energy light. By tuning ligand scaffold and electron density, we access a range of synthetically useful excited state energies and redox potentials.1 Introduction1.1 Scope1.2 Measuring Ground-State Redox Potentials1.3 Measuring Photophysical Properties1.4 Synthesis of Osmium Complexes2 Properties of

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5

Medina, Edinson, and Balazs Pinter. "A DFT Study on the Redox Active Behavior of Carbene and Pyridine Ligands in the Oxidative and Reductive Quenching Cycles of Ruthenium Photoredox Catalysts." Catalysts 10, no. 1 (2020): 80. http://dx.doi.org/10.3390/catal10010080.

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In this study, a detailed look at the electronic structure changes induced by photon absorption and of the succeeding redox events of the oxidative and reductive quenching cycles of ruthenium–carbene and ruthenium–pyridine photoredox catalysts is provided through an arsenal of density functional theory-based techniques including electron density difference Δρ(r) maps, spin-density distributions, and the non-covalent interaction analysis. We introduced an efficient computational protocol to obtain accurate equilibrium structures and ground-state reduction potentials for these types of complexes

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6

Hammond, Timothy G., Patricia L. Allen, and Holly H. Birdsall. "Validation of Assays for Reactive Oxygen Species and Glutathione in Saccharomyces cerevisiae during Microgravity Simulation." Gravitational and Space Research 3, no. 2 (2015): 42–53. http://dx.doi.org/10.2478/gsr-2015-0010.

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ABSTRACT The effects of spaceflight on yeast have high concordance with agents that induce a very low intracellular redox state and induce a massive efflux of glutathione. These results raise important issues. Can the reduced redox state during spaceflight be reproduced and modulated in ground-based simulations? Will this allow definition of unique drug pathways as a low redox potential state mirrors the electrophilic properties of mitochondria where many drugs are metabolized? Unfortunately, assays for redox status and its major cellular determinant—glutathione—are diverse and often cell-type

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7

Bourotte, Christine, Reginaldo Bertolo, Marta Almodovar, and Ricardo Hirata. "Natural occurrence of hexavalent chromium in a sedimentary aquifer in Urânia, State of São Paulo, Brazil." Anais da Academia Brasileira de Ciências 81, no. 2 (2009): 227–42. http://dx.doi.org/10.1590/s0001-37652009000200009.

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Anomalous concentrations of hexavalent chromium have been detected in ground-water of the Adamantina Aquifer inat least 54 municipalities located in the northwestern region of the State of São Paulo, southeast Brazil, occasionallyexceeding the permitted limit for human consumption (0.05 mg.L-1). An investigation was conducted in the municipality of Urânia, where the highest concentrations of chromium were detected regionally. It was defined that the originof this contamination is natural, since high concentrations of chromium were detected in aquifer sandstones (averageof 221 ppm) and also in

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8

Creutz, Carol, and Mei H. Chou. "Solvent Dependence of the Reduction Potential of Ground- and Excited-State Redox Couples: trans- Dioxo(1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane)osmium(VI/V)." Inorganic Chemistry 33, no. 14 (1994): 3199–200. http://dx.doi.org/10.1021/ic00092a033.

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9

Bumpus, Peter B., and Sarah E. Kruse. "Self-potential monitoring for hydrologic investigations in urban covered-karst terrain." GEOPHYSICS 79, no. 6 (2014): B231—B242. http://dx.doi.org/10.1190/geo2013-0354.1.

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In the covered karst of west-central Florida, USA, sinkholes (sandy collapse conduits) provide locally concentrated recharge to underlying aquifers. For water management, it would be beneficial to understand the rates at which collapse conduits recharge an underlying aquifer. Self-potential (SP) monitoring has promise as a noninvasive, relatively low-cost method for assessing temporal variability in flow. Previous studies suggested that negative SP anomalies over collapse conduits correspond to downward-flowing groundwater; however, before SP surveys can be reliable indicators of conduit flow,

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10

Yang, Jing, John H. Enemark, and Martin L. Kirk. "Metal–Dithiolene Bonding Contributions to Pyranopterin Molybdenum Enzyme Reactivity." Inorganics 8, no. 3 (2020): 19. http://dx.doi.org/10.3390/inorganics8030019.

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Here we highlight past work on metal–dithiolene interactions and how the unique electronic structure of the metal–dithiolene unit contributes to both the oxidative and reductive half reactions in pyranopterin molybdenum and tungsten enzymes. The metallodithiolene electronic structures detailed here were interrogated using multiple ground and excited state spectroscopic probes on the enzymes and their small molecule analogs. The spectroscopic results have been interpreted in the context of bonding and spectroscopic calculations, and the pseudo-Jahn–Teller effect. The dithiolene is a unique liga

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