Results 131 to 140 of about 57,188 (237)

New Water Oxidation Mechanism in Photosystem II Resolves Major Experimental Controversies

Angewandte Chemie, EarlyView.
In Photosystem II Oxygen Evolving Complex, we discovered the O3‐O6 peroxide at lower energy. Assignment of the O3 ligated by histidine (His337) as a slow exchanging substrate and its coupling with O6 give the O─O bond formation mechanism most consistent with all currently available experimental data. Proposal shows how protein environment can steer the
Yulia Pushkar
wiley   +2 more sources

Strain‐Directed Ru Redistribution to Form RuO2/Pt Mosaic Heterointerfaces for Acid‐Stable Water Oxidation

Advanced Energy Materials, EarlyView.
Strain‐driven Ru inward migration creates confined RuO2/Pt mosaic heterointerfaces within a PtNi multiframe. These interfaces enable redox‐asymmetric Pt–Ru coupling that stabilizes Ru4+, suppresses lattice oxygen participation, and promotes highly durable acidic oxygen evolution.
Yeji Park, Doyeop Kim, Jungho Kim, Ho Yeon Jang, Minseon Cha, Subeen Lee, Tae Kyung Lee, Taekyung Kim, Hionsuck Baik, Jinwon Choi, Taehyun Kwon, Seoin Back, Sung Jong Yoo, Kwangyeol Lee   +13 more
wiley   +1 more source

Photocatalytic Lignin Depolymerization and Cross‐Coupling With Alcohols to Produce Unsymmetric Aromatic Diols

Angewandte Chemie, EarlyView.
A photocatalytic approach for efficient one‐pot direct lignin depolymerization and subsequent cross‐coupling with alcohols for the production of unsymmetrical aromatic diols has been demonstrated. ABSTRACT Conversion of lignin into chemical products typically involves two separate steps, such as depolymerization and subsequent upgrading of monomers ...
Hongji Li, Jialing Ma, Xiaoling Wan, Yumei Liu, Chaofeng Zhang, Xiaoqin Si, Xiaojun Shen, Rajenahally V. Jagadeesh   +7 more
wiley   +2 more sources

Cerebrospinal Fluid from Restless Legs Syndrome Patients Reduces Iron Uptake in Blood–Brain Barrier Endothelial Cells by Disrupting the Regulation of Transferrin Receptors

Annals of Neurology, EarlyView.
Model figure of BBBECs TfR1 regulation in control and RLS: Graphical representation of TfR1 regulation in ECs by IRPs and representing it can be dysregulated by miR‐124‐3p in ECs of RLS. FPN1, ferroportin; BBBEC, blood‐brain barrier endothelial cells; IRP, iron regulatory proytein1/2; TfR1, Transferrin receptor; IRE, Iron responsive elements; Tf ...
Kondaiah Palsa, Aurosman Pappus Sahu, David B. Rye, Lynn Marie Trotti, Irina A. Elcheva, Vladimir S. Spiegelman, James R. Connor   +6 more
wiley   +1 more source

Palladium‐Doping‐Enabled Interface Synergy for Superb Ampere Level Ammonia Electrosynthesis From Nitrate

Angewandte Chemie, EarlyView.
Isolated Pd sites in a metallic Co matrix boost nitrate‐to‐ammonia conversion. Pd doping optimizes intermediate adsorption and reconstructs the interfacial microenvironment, promoting cation enrichment and a hydrogen‐down‐oriented water network. This dual modulation facilitates proton transfer and intermediate stabilization, enabling high ammonia ...
Qun He, Chuanqiang Wu, Zhangsheng Shi, Dongxue Yu, Wei Jiang, Li Song, Xin Wang   +6 more
wiley   +2 more sources

Analysis of 13C Enrichment of Vitamin A in Biological Samples by Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry. [PDF]

J Vis Exp
Gannon BM, Davis CR, Chen H, Tanumihardjo SA.   +3 more
europepmc   +1 more source

Characteristic of Oral Squamous Cell Carcinoma Tissues Using Isotope Ratio Mass Spectrometry. [PDF]

J Clin Med, 2020
Bogusiak K, Puch A, Mostowski R, Kozakiewicz M, Paneth P, Kobos J.   +5 more
europepmc   +1 more source

Coupling Liquid Chromatography to Orbitrap Isotope Ratio Mass Spectrometry: Overcoming Isotope Effects of Chromatography and Amount-Dependency by Peak Homogenization. [PDF]

Anal Chem
Canavan A, Prechtl L, Al-Ghoul H, Kuhlbusch N, Erhardt AM, Elsner M.   +5 more
europepmc   +1 more source

Derivatization of Levoglucosan for Compound-Specific δ ¹³C Analysis by Gas Chromatography/Combustion/Isotope Ratio Mass Spectrometry. [PDF]

Int J Anal Chem, 2020
Zhang D, Swe Aung S, Han Y, Zhang Y, Chen Y, Li H, Yu F, Wang Y, Feng J, Wang W.   +9 more
europepmc   +1 more source

Enzyme‐Like Synthetic Cleft for Light‐Driven Water‐Oxidation Catalysis Via an Oxide Relay Pathway

Angewandte Chemie, EarlyView.
A carboxylic acid group introduced into the second coordination sphere of a Ru(bda) water oxidation catalyst forms a defined hydrogen bond within the catalytic cleft. This interaction locks the group in place and enables an intramolecular oxide relay pathway between Ru(V)═O and the carboxylate group, providing a distinct and efficient route for O─O ...
Daniel A. P. Friedewald, Gourab Das, Philipp H. Kirchner, Olga Anhalt, Deqi Tang, Sandra Luber, Florian Beuerle, Frank Würthner   +7 more
wiley   +2 more sources