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Recent advances in photocatalyzed reactions using well-defined copper(I) complexes
Published 2020-03-01“…Their applications in various reactions, such as ATRA, reduction, oxidation, proton-coupled electron transfer, and energy transfer reactions are discussed.…”
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Two-Electron, Two-Proton Oxidation of Catechol: Kinetics and Apparent Catalysis
Published 2015“…The study of proton-coupled electron transfer reactions is of great current interest. …”
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A DFT Study on the Kinetics of HOO<sup>•</sup>, CH<sub>3</sub>OO<sup>•</sup>, and O<sub>2</sub><sup>•−</sup> Scavenging by Quercetin and Flavonoid Catecholic Metabolites
Published 2023-05-01“…All studied polyphenolics have a potency of O<sub>2</sub><sup>•−</sup> inactivation via a concerted two-proton–coupled electron transfer (2PCET) mechanism. The obtained results indicate that metabolites with notable radical scavenging potency, and more bioavailability than ingested flavonoids, may contribute to human health-promoting effects ascribed to parent molecules.…”
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Photocatalytic reverse polarity Povarov reaction
Published 2018“…Operating via a putative nucleophilic α-amino radical, generated by a proton coupled electron transfer process, addition to a range of conjugated electron deficient alkene substrates affords substituted tetrahydroquinoline products in high yields and with typically good to excellent diastereoselectivity in favor of the trans diastereoisomer. …”
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Rationale on the High Radical Scavenging Capacity of Betalains
Published 2019-07-01“…Here we show that <i>meta</i>-hydroxyphenyl betalain (<i>m</i>-OH-pBeet) and phenylbetalain (pBeet) show higher radical scavenging capacity compared to their <i>N</i>-methyl iminium analogues, in which proton-coupled electron transfer (PCET) from the imine nitrogen atom is precluded. …”
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Species-Specificity in Myoglobin Oxygenation and Reduction Potential Properties
Published 2017-06-01“…The redox potentials became more negative as pH increased, indicating a proton-coupled electron transfer. There were no differences (P = 0.51) between species in reduction potential properties of heme. …”
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What Can be Learned from Proton Relays in Photosystem II toward Complete Biomimicking of Oxygen Evolution Reaction Electrocatalysis?
Published 2023-12-01“…The initial function of proton relays in natural WOR happens when Tyrosine Yz is oxidized by light harvested P680 through a proton‐coupled electron transfer reaction. The second and main one, is composed of water‐included polypeptide channels from and to CaMn4O5. …”
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The Mechanism of Metal-Containing Formate Dehydrogenases Revisited: The Formation of Bicarbonate as Product Intermediate Provides Evidence for an Oxygen Atom Transfer Mechanism
Published 2023-02-01“…Other than what has been previously reported, bicarbonate is formed after an oxygen atom transfer reaction, transferring the oxygen from water to formate and a subsequent proton-coupled electron transfer or hydride transfer reaction involving the sulfido ligand as acceptor.…”
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Synthesis of polyfunctionalized dihydro-2-oxypyrroles catalyzed by 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as a novel donor-acceptor fluorophore
Published 2022-10-01“…To generate a renewable energy sources from visible light, a PCET (proton-coupled electron transfer) photocatalyst was used in an ethanol solution in an air environment and at room temperature. …”
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Quantum Logic Gates Based on DNAtronics, RNAtronics, and Proteintronics
Published 2021-07-01“…Herein, it is demonstrated that DNA, RNA, and protein are promising media for QCs, and one uses residue pairs, including nucleotide base pairs and amino acid pairs, via proton‐coupled electron transfer to fabricate a quantum logic gate. …”
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Probing Active Sites and Reaction Intermediates of Electrocatalysis Through Confocal Near-Infrared Photoluminescence Spectroscopy: A Perspective
Published 2020-04-01“…Electrocatalytic reactions such as oxygen evolution (OER) and oxygen reduction reactions (ORR) are one of the most complex heterogeneous charge transfer processes because of the involvement of multiple proton-coupled-electron transfer steps over a narrow potential range and the formation/breaking of oxygen-oxygen bonds. …”
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A novel tetranucleate nickel (II)-based molecular catalytic system: Beneath visible light, highly effective and selective for CO2-to-CO transformation
Published 2022-10-01“…A mechanism containing a four-stage proton-coupled electron transfer process was sketched by conjoint analysis using High-Resolution Mass Spectrometry (HRMS) and Density Functional Theory (DFT) calculations.…”
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DFT Study of the Direct Radical Scavenging Potency of Two Natural Catecholic Compounds
Published 2022-11-01“…In lipid media, H-atom donation from quercetin’s catecholic OH groups via the proton-coupled electron transfer (PCET) mechanism, is more relevant than from C-ring enolic moiety. …”
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Inspired by Nature—Functional Analogues of Molybdenum and Tungsten-Dependent Oxidoreductases
Published 2022-06-01“…All model compounds receive individual attention, highlighting the specific novelty that each provides for our understanding of the enzymatic mechanisms, such as oxygen atom transfer and proton-coupled electron transfer, or that each presents for exploiting new and useful catalytic capability. …”
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Structural evidence for a copper-bound carbonate intermediate in the peroxidase and dismutase activities of superoxide dismutase.
Published 2012-01-01“…The bound carbonate blocks direct access of substrates to Cu(I), suggesting that an adjunct to the accepted mechanism of SOD catalysed dismutation of superoxide operates, with Cu(I) oxidation by superoxide being driven via a proton-coupled electron transfer mechanism involving the bound carbonate rather than the solvent. …”
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The Synergy between Glutathione and Phenols—Phenolic Antioxidants Repair Glutathione: Closing the Virtuous Circle—A Theoretical Insight
Published 2023-05-01“…Our results showed that phenolic antioxidants could repair GSH through sequential proton loss electron transfer (SPLET) in aqueous media, with rate constants ranging from 3.21 × 10<sup>6</sup> M<sup>−1</sup> s<sup>−1</sup> for catechol to 6.65 × 10<sup>8</sup> M<sup>−1</sup> s<sup>−1</sup> for piceatannol, and through proton-coupled electron transfer (PCET) in lipid media with rate constants ranging from 8.64 × 10<sup>6</sup> M<sup>−1</sup> s<sup>−1</sup> for catechol to 5.53 × 10<sup>7</sup> M<sup>−1</sup> s<sup>−1</sup> for piceatannol. …”
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Multisite PCET with photocharged carbon nitride in dark
Published 2021-12-01“…Abstract A combination of photochemistry and proton coupled electron transfer (PCET) is a primary strategy employed by biochemical systems and synthetic chemistry to enable uphill reactions under mild conditions. …”
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