A bio-inspired coordination polymer as outstanding water oxidation catalyst via second coordination sphere engineering by Wenlong Li, Fusheng Li, Hao Yang, Xiujuan Wu, Peili Zhang, Yu Shan, Licheng Sun

“…Proton-coupled electron transfer (PCET) process is very important for water oxidation catalysis. …”
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Unravelling the role of transient redox partner complexes in P450 electron transfer mechanics by Tatiana Y. Hargrove, David C. Lamb, Jarrod A. Smith, Zdzislaw Wawrzak, Steven L. Kelly, Galina I. Lepesheva

“…Close proximity of ferredoxin, however, is required to complete the substrate-induced large-scale structural switch in the P450 domain that enables proton-coupled electron transfer and subsequent oxygen scission and catalysis. …”
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Energy, Entropy and Quantum Tunneling of Protons and Electrons in Brain Mitochondria: Relation to Mitochondrial Impairment in Aging-Related Human Brain Diseases and Therapeutic Mea... by James P. Bennett, Isaac G. Onyango

“…Adenosine triphosphate (ATP) is a universal energy currency in brains and is produced by oxidative phosphorylation (OXPHOS) using ATP synthase, a nano-rotor powered by the proton gradient generated from proton-coupled electron transfer (PCET) in the multi-complex electron transport chain (ETC). …”
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Fluorescent N, S co-doped carbon dots for tartrazine sensing and mechanistic perception of their radical scavenging activity by Md Abdus Salam Shaik, Dipanjan Samanta, Manisha Shaw, Imran Mondal, Rajarshi Basu, Amita Pathak

“…From pH-dependent UV–Vis and EPR spectroscopy studies, the scavenging of DPPH free radicals by the NSCDs was affirmed to follow the hydrogen atom transfer (HAT) mechanism in an acidic medium while the proton-coupled electron transfer (PCET) mechanism was predominant in alkaline medium.…”
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Distal hydrogen-bonding effects and cofacial bimetallic salen architectures for oxygen activation chemistry by Yang, Jenny Yue-fon

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The electrochemistry of a heme-containing enzyme, CYP199A2, adsorbed directly onto a pyrolytic graphite electrode by Fleming, B, Bell, S, Wong, L, Bond, A

“…SHE) and that electrons can be rapidly transferred between the electrode and the enzyme (rate constant at the reversible potential, ks = 550 ± 50 s-1). Proton-coupled electron transfer, CO and O2 binding are evident, consistent with P450 heme involvement in the redox process. …”

Chemical Diversity of Metal Sulfide Minerals and Its Implications for the Origin of Life by Yamei Li, Norio Kitadai, Ryuhei Nakamura

“…Approaches to rationally predict the catalytic functions of metal sulfides are discussed based on advanced theories and analytical tools of electrocatalysis such as proton-coupled electron transfer, structural comparisons between enzymes and minerals, and in situ spectroscopy. …”
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Hydrogen Tunnelling as a Probe of the Involvement of Water Vibrational Dynamics in Aqueous Chemistry? by Ana Karković Marković, Cvijeta Jakobušić Brala, Viktor Pilepić, Stanko Uršić

“…Our study of tunnelling in proton-coupled electron transfer (PCET) oxidation of ascorbate with hexacyanoferrate(III) follows the insights obtained from ultrafast 2D IR spectroscopy and theoretical studies of the vibrational water dynamics that led to the proposal of the involvement of collective intermolecular excitonic vibrational water dynamics in aqueous chemistry. …”
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An electrochemical gram-scale protocol for pyridylation of inert N-heterocycles with cyanopyridines by Cong Niu, Jianjing Yang, Kelu Yan, Jiafang Xie, Wei Jiang, Bingwen Li, Jiangwei Wen

“…Summary: Here, we present a protocol to decyanopyridate inert N-heterocycles access to N-fused heterocycles via the mechanism of dual proton-coupled electron transfer (PCET). We describe a detailed guide to performing an electrochemical gram-scale protocol for decyanopyridation of inert N-heterocycles. …”
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Current status of neutron crystallography in structural biology by Fumiaki Kono, Kazuo Kurihara, Taro Tamada

“…Neutron crystallography enables direct observation of hydrogen atoms, and reveals molecular recognition through hydrogen bonding and catalytic reactions involving proton-coupled electron transfer. The use of neutron crystallography is still limited for proteins, but its popularity is increasing owing to an increase in the number of diffractometers for structural biology at neutron facilities and advances in sample preparation. …”
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The catalytic mechanism of the mitochondrial methylenetetrahydrofolate dehydrogenase/cyclohydrolase (MTHFD2). by Li Na Zhao, Philipp Kaldis

“…We found that the dehydrogenase activity features a proton-coupled electron transfer with charge redistribution connected to the reorganization of the surrounding water molecules which further facilitates the subsequent cyclohydrolase activity. …”
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Organic Small-Molecule Electrodes: Emerging Organic Composite Materials in Supercapacitors for Efficient Energy Storage by Yuanyuan He, Qiaoqiao Wei, Ning An, Congcong Meng, Zhongai Hu

“…With small organic molecules as the active center, OMEs can significantly improve the energy density at low molecular weight through proton-coupled electron transfer, which is not limited by lattice size. …”
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Kinetics and mechanism of redox-coupled, long-range proton transfer in an iron-sulfur protein. Investigation by fast-scan protein-film voltammetry by Hirst, J, Duff, J, Jameson, G, Kemper, M, Burgess, B, Armstrong, F

“…Fast-scan protein-film voltammetry has been used to study and deconvolute the kinetics of proton-coupled electron transfer to and from the [3Fe-4S] cluster in Azotobacter vinelandii Ferredoxin I (Au Fd I). …”

Biomimetic Fe7S8/Carbon electrocatalyst from [FeFe]‐Hydrogenase for improving pH‐Universal electrocatalytic hydrogen production by Dohun Kim, Subramani Surendran, Sejin Im, Jaehyoung Lim, Kyoungsuk Jin, Ki Tae Nam, Uk Sim

“…Electrochemical impedance spectroscopy reveals that Fe7S8/C exhibits the lowest charge transfer resistance under neutral conditions, indicating an improved proton‐coupled electron transfer process. Continuous‐wave electron paramagnetic resonance results confirm a change in the valence state of Fe from 3+ to 1+ during the hydrogen evolution reaction (HER). …”
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MISPR: an open-source package for high-throughput multiscale molecular simulations by Rasha Atwi, Matthew Bliss, Maxim Makeev, Nav Nidhi Rajput

“…In this work, we describe fully automated DFT workflows implemented in MISPR to compute various properties such as nuclear magnetic resonance chemical shift, binding energy, bond dissociation energy, and redox potential with support for multiple methods such as electron transfer and proton-coupled electron transfer reactions. The infrastructure also enables the characterization of large-scale ensemble properties by providing MD workflows that calculate a wide range of structural and dynamical properties in liquid solutions. …”
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Electron Transport in a Dioxygenase-Ferredoxin Complex: Long Range Charge Coupling between the Rieske and Non-Heme Iron Center. by Wayne K Dawson, Ryota Jono, Tohru Terada, Kentaro Shimizu

“…The results are consistent with a proton coupled electron transfer mechanism.…”
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Unraveling the Pivotal Roles of Various Metal Ion Centers in the Catalysis of Quercetin 2,4-Dioxygenases by Xueyuan Yan, Han Xiao, Jinshuai Song, Chunsen Li

“…Our calculation results indicate that metal ions act as Lewis acids in the reaction to stabilize the substrate anion and the subsequent superoxo and peroxo species in the reaction, and promote the proton coupled electron transfer (PCET) process. Furthermore, the coordination tendencies of transition metal ion centers also have important effects on the catalytic cycle. …”
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Revealing the role of double-layer microenvironments in pH-dependent oxygen reduction activity over metal-nitrogen-carbon catalysts by Peng Li, Yuzhou Jiao, Yaner Ruan, Houguo Fei, Yana Men, Cunlan Guo, Yuen Wu, Shengli Chen

“…Specifically, the greatly disparate charge densities on electrode surfaces render different orientations of interfacial water under alkaline and acid oxygen reduction conditions, thereby affecting the formation of hydrogen bonds between the surface oxygenated intermediates and the interfacial water molecules, eventually controlling the kinetics of the proton-coupled electron transfer steps. The present findings may open new and feasible avenues for the design of advanced metal-nitrogen-carbon catalysts for proton exchange membrane fuel cells.…”
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Au Micro‐ and Nanoelectrodes as Local Voltammetric pH Sensors During Oxygen Evolution at Electrocatalyst‐Modified Electrodes by Lejing Li, Ndrina Limani, Rajini P Antony, Stefan Dieckhöfer, Carla Santana Santos, Wolfgang Schuhmann

“…Considering that OER is a proton‐coupled electron‐transfer reaction that involves local acidification of the reaction environment by liberation of H+, the catalyst stability can be largely compromised in such conditions. …”
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Tyrosine residues initiated photopolymerization in living organisms by Mei Zhu, Shengliang Wang, Zhenhui Li, Junbo Li, Zhijun Xu, Xiaoman Liu, Xin Huang

“…Herein, we find that the tyrosine residues in the cofactor-free proteins can be employed to mediate controlled radical polymerization under 405 nm light. A proton-coupled electron transfer (PCET) mechanism between the excited-state TyrOH* residue in proteins and the monomer or the chain transfer agent is confirmed. …”
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