-
Article
Open AccessOn the simulation and interpretation of substrate-water exchange experiments in photosynthetic water oxidation
Water oxidation by photosystem II (PSII) sustains most life on Earth, but the molecular mechanism of this unique process remains controversial. The ongoing identification of the binding sites and modes of the ...
-
Article
Open AccessAuthor Correction: Structural evidence for intermediates during O2 formation in photosystem II
-
Article
Open AccessRole of decomposition products in the oxidation of cyclohexene using a manganese(III) complex
Metal complexes are extensively explored as catalysts for oxidation reactions; molecular-based mechanisms are usually proposed for such reactions. However, the roles of the decomposition products of these mate...
-
Article
Open AccessStructural evidence for intermediates during O2 formation in photosystem II
In natural photosynthesis, the light-driven splitting of water into electrons, protons and molecular oxygen forms the first step of the solar-to-chemical energy conversion process. The reaction takes place in ...
-
Article
Open AccessElectrochemical oxidation of ferricyanide
We report the electrochemical oxidation of ferricyanide, [FeIII(CN)6]3− and characterised the oxidation product by in-situ FTIR and XAS spectroelectrochemistry methods. Oxidation of [FeIII(CN)6]3− is proposed to ...
-
Article
Open AccessStructural dynamics in the water and proton channels of photosystem II during the S2 to S3 transition
Light-driven oxidation of water to molecular oxygen is catalyzed by the oxygen-evolving complex (OEC) in Photosystem II (PS II). This multi-electron, multi-proton catalysis requires the transport of two water ...
-
Article
Open AccessRoom temperature XFEL crystallography reveals asymmetry in the vicinity of the two phylloquinones in photosystem I
Photosystem I (PS I) has a symmetric structure with two highly similar branches of pigments at the center that are involved in electron transfer, but shows very different efficiency along the two branches. We ...
-
Article
Open AccessOperando tracking of oxidation-state changes by coupling electrochemistry with time-resolved X-ray absorption spectroscopy demonstrated for water oxidation by a cobalt-based catalyst film
Transition metal oxides are promising electrocatalysts for water oxidation, i.e., the oxygen evolution reaction (OER), which is critical in electrochemical production of non-fossil fuels. The involvement of ox...
-
Article
Open AccessPublisher Correction: Light-driven formation of manganese oxide by today’s photosystem II supports evolutionarily ancient manganese-oxidizing photosynthesis
A Correction to this paper has been published: https://doi.org/10.1038/s41467-020-20868-9
-
Article
Open AccessLight-driven formation of manganese oxide by today’s photosystem II supports evolutionarily ancient manganese-oxidizing photosynthesis
Water oxidation and concomitant dioxygen formation by the manganese-calcium cluster of oxygenic photosynthesis has shaped the biosphere, atmosphere, and geosphere. It has been hypothesized that at an early sta...
-
Article
Open AccessElectrochemical alcohols oxidation mediated by N-hydroxyphthalimide on nickel foam surface
Alcohol to aldehyde conversion is a critical reaction in the industry. Herein, a new electrochemical method is introduced that converts 1 mmol of alcohols to aldehydes and ketones in the presence of N-hydroxyphth...
-
Article
Open AccessUnequal misses during the flash-induced advancement of photosystem II: effects of the S state and acceptor side cycles
Photosynthetic water oxidation is catalyzed by the oxygen-evolving complex (OEC) in photosystem II (PSII). This process is energetically driven by light-induced charge separation in the reaction center of PSII...
-
Article
Open AccessUncovering The Role of Oxygen in Ni-Fe(OxHy) Electrocatalysts using In situ Soft X-ray Absorption Spectroscopy during the Oxygen Evolution Reaction
In-situ X-ray absorption spectroscopy (XAS) at the oxygen K-edge was used to investigate the role of oxygen during the oxygen evolution reaction (OER) in an electrodeposited Ni-Fe(OxHy) electrocatalyst in alkalin...
-
Article
Unified structural motifs of the catalytically active state of Co(oxyhydr)oxides during the electrochemical oxygen evolution reaction
Efficient catalysts for the anodic oxygen evolution reaction (OER) are critical for electrochemical H2 production. Their design requires structural knowledge of their catalytically active sites and state. Here, w...
-
Article
Open AccessSpectroscopic identification of active sites for the oxygen evolution reaction on iron-cobalt oxides
The emergence of disordered metal oxides as electrocatalysts for the oxygen evolution reaction and reports of amorphization of crystalline materials during electrocatalysis reveal a need for robust structural ...
-
Article
Open AccessReversible amorphization and the catalytically active state of crystalline Co3O4 during oxygen evolution
Water splitting catalysed by earth-abundant materials is pivotal for global-scale production of non-fossil fuels, yet our understanding of the active catalyst structure and reactivity is still insufficient. He...
-
Chapter and Conference Paper
Water Oxidation in Photosystem II: Energetics and Kinetics of Intermediates Formation in the S2→S3 and S3→S0 Transitions Monitored by Delayed Chlorophyll Fluorescence
Water oxidation by Photosystem II (PSII) is a process of fundamental importance for atmosphere (O2 production) and biosphere (primary biomass formation). In order to understand this basic biological process and t...
-
Chapter and Conference Paper
Coordination Changes of Carboxyl Ligands at the QAFeQB Triad in Photosynthetic Reaction Centers Studied by Density-Functional Theory
The electron exit pathway of photosystem II (PSII) in plants and cyanobacteria comprises two quinone molecules (QA and QB) working in a series and in between a non-heme iron atom with a carboxyl ligand. Currently...
-
Article
Delayed fluorescence in photosynthesis
Photosynthesis is a very efficient photochemical process. Nevertheless, plants emit some of the absorbed energy as light quanta. This luminescence is emitted, predominantly, by excited chlorophyll a molecules in ...
-
Chapter and Conference Paper
Modulated Sink-Source Interactions Preserve PSII Electron Transport from Senescence-Induced Inactivation in a Model System with Expanded Life Span Induced by Decapitation of Bean Plants
One Of The Approaches To Create Different Physiological States In Plants Of The Same Ontogenetic Age Is Decapitation, I.E. Removal Of The Top Stem Bud Without Or In Combination With Consecutive Removal Of Newl...
