The Oxygen Evolving Complex
Studies of the oxygen-evolving complex of photosystem II
... Correlation between structure and magnetic spin state of the manganese cluster in the oxygen-evolving complex of photosystem II in the s 2 state: Determination by X-r[r] ...
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Models of the Oxygen Evolving Complex of Photosystem II
... ABSTRACT In the five chapters that follow, I delineate my efforts over the last five years to synthesize structurally and chemically relevant models of the Oxygen Evolving Complex (OEC) of ...
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Bio Inspired Homometallic and Heterometallic Clusters Relevant to the Oxygen Evolving Complex of Photosystem II
... the oxygen-evolving complex (OEC) of photosystem II (PSII), presents an attractive alternative energy source to traditional petrochemical ...evolve oxygen from a synthetic scaffold are not ...
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S = 3 Ground State for a Tetranuclear Mn^(IV)₄O₄ Complex Mimicking the S₃ State of the Oxygen Evolving Complex
... the oxygen evolving complex (OEC) of Photosystem II, and its electronic structure has been assigned to a homovalent Mn IV 4 core with an S = 3 ground ...cuboidal complex as a spectroscopic ...
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The study of the multi-line-signal s 2 state of the oxygen evolving complex of the photosystem-ii.
... molecular oxygen are produced, the latter as a waste product, while consuming water and carbon dioxide in the presence of ...of oxygen evolving complex (OEC) fully still remains a ...oxidizing ...
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Calcium Valence-to-Core X-ray Emission Spectroscopy: A Sensitive Probe of Oxo Protonation in Structural Models of the Oxygen-Evolving Complex
... ■ INTRODUCTION Calcium, the fifth most abundant element in the earth’s crust, fills many important roles in natural and synthetic chemistry. 1 Ca 2+ is the main cation in bone, shell, and microstructured biomaterials with ...
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Thermodynamics of Proton and Electron Transfer in Tetranuclear Clusters with Mn–OH_2/OH Motifs Relevant to H_2O Activation by the Oxygen Evolving Complex in Photosystem II
... INTRODUCTION During photosynthesis, water oxidation is catalyzed at the active site of Photosystem II (PSII) by a CaMn 4 O 5 cluster known as the Oxygen Evolving Complex (OEC). 1 The catalytic ...
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Spermine and spermidine inhibition of photosystem II: Disassembly of the oxygen evolving complex and consequent perturbation in electron donation from TyrZ to P680+ and the quinone acceptors QA− to QB
... Polyamines are implicated in plant growth and stress response. However, the polyamines spermine and spermidine were shown to elicit strong inhibitory effects in photosystem II (PSII) submembrane fractions. We have ...
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Computational Investigation of the Oxygen Evolving Complex of Photosystem II and Related Models via Density Functional Theory
... In conclusion, the recent 2.1 Å resolution Sr-substituted crystal structure of PS II reveals the same unusual features found in the 1.9 Å Ca structure, namely long Mn1–Mn2 and Mn2–Mn3 distances and the anomalous O5 group ...
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Electronic Structure and Spectroscopy of Tetranuclear Mn4O4 and CaMn3O4 Complexes as Models of the Oxygen Evolving Complex in Photosystem II
... 29 The [Mn III Mn IV O2(OAc)] 2+ core of a related synthetic complex and the dimanganese catalase was also labeled through a similar incubation procedure. 28 The experimental 17 O [r] ...
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New Synthetic Approaches and Structural Models of the Oxygen-Evolving Complex in Photosystem II from the Use of Oximato-Based Ligands
... 74 2.3.4 Electrochemistry The redox activity of electrochemically prominent metal complexes can be assessed by cyclic voltammetry. This technique is of significant importance in both molecular magnetism and bioinorganic ...
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Tetranuclear [Mn^(III)Mn_3^(IV)O_4] Complexes as Spectroscopic Models of the S_2 State of the Oxygen Evolving Complex in Photosystem II
... Electrochemistry Measurements were performed under an inert N 2 atmosphere in the glovebox using a Pine Instrument Company AFCBP1 bipotentiostat using the AfterMath software package. Cyclic voltammograms were recorded on ...
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Evidence for an oxygen evolving iron oxo cerium intermediate in iron-catalysed water oxidation
... H igh-valent iron-oxo species are implicated in important biological and synthetic oxidative transformations 1–3 . Some of these species have also shown a remarkable competence towards water oxidation to form dioxygen, a ...
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Ranking in evolving complex networks
... dynamically evolving systems – as will be examined in depth in the next sections – and, for this reason, they should never be applied without considering the specific properties of the system in ...
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Oxide/Doped SnO2 Oxygen-Evolving Catalysts on the
... Keywords: proton exchange membrane water electrolysis; anode catalyst; oxygen evolution.. 32.[r] ...
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In situ observation of reactive oxygen species forming on oxygen evolving iridium surfaces
... reactive oxygen species contained in the iridium-oxide matrix are directly involved in the catalytic OER cycle, an in situ investigation elucidating the chemical nature of these reactive species is highly ...
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Structure and dynamics of evolving complex networks
... how complex patterns can be produced by the collective behaviour of many interacting agents such as particles, cells or people, is one of the most im- portant considerations in complex systems ...
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Computational Discovery in Evolving Complex Networks
... Yongqin Gao December 2006 Dissertation Defense Computational Discovery Our Methodology Research Collaboratory Data Mining Network Analysis Computer Simulation Discovery Assessment R[r] ...
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Benchmarking Hydrogen Evolving Reaction and Oxygen Evolving Reaction Electrocatalysts for Solar Water Splitting Devices
... The peak at 284.3 eV is the expected C 1s peak for graphitic carbon in glassy carbon, S26,27 and the small shoulder at 287.7 eV is typical for more oxidized carbon groups on an anodiz[r] ...
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Architectural Analysis of Complex Evolving Systems of Systems
... Based on this varied feedback and our overall experience from this project, we have a very positive outlook for the Dyn-SAVE tool and related technologies. The problems Dyn-SAVE addresses are problems experienced by a ...
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