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PubMed Journals Articles About "Electrochemistry" RSS

05:26 EDT 18th June 2018 | BioPortfolio

Electrochemistry PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Electrochemistry articles that have been published worldwide.

More Information about "Electrochemistry" on BioPortfolio

We have published hundreds of Electrochemistry news stories on BioPortfolio along with dozens of Electrochemistry Clinical Trials and PubMed Articles about Electrochemistry for you to read. In addition to the medical data, news and clinical trials, BioPortfolio also has a large collection of Electrochemistry Companies in our database. You can also find out about relevant Electrochemistry Drugs and Medications on this site too.

Showing "Electrochemistry" PubMed Articles 1–25 of 82

The pre-exponential factor in electrochemistry.

Like many branches of science, not to mention culture in general, electrochemistry has a number of recurrent topics: Areas of research that are popular for a certain time, then fade away as their possibilities seem to have been exhausted, only to come back decades later as progress in experimental or theoretical techniques offer new possibilities for their investigation. A prime example are fuel cells, which have undergone five such cycles, but here we want to discuss a general concept of kinetics, the pre-...


Structure and Electrochemistry of Proteins Harboring Iron-Sulfur Clusters of Different Nuclearities. Part III. 4Fe-4S, 3Fe-4S and 2Fe-2S Iron-Sulfur Proteins.

A systematic rationalization of the hundreds of proteins harboring iron-sulfur clusters and able to exhibit the most diverse biological functions is missing. In this picture we have already reviewed structure/electrochemistry of metalloproteins expressing single types of iron-sulfur centres [namely, {Fe(Cys)}, { [FeS](Cys)}, {[FeS](Cys)(X)} (X = Asp, Arg, His), [FeS](Cys)(His)}, { [FeS](Cys)}, { [FeS](Cys)} and { [FeS](S)(nonthiolate ligand)}] and their synthetic analogs. Recently we are focussing on struct...

Splitting Water by Electrochemistry and Artificial Photosynthesis: Excellent Science but a Nightmare of Translation?

Water splitting to its elements, either by electrochemistry or by solar light, is among the most covered areas in nanostructured functional materials. This personal account article analyzes potential downstream translation problems and reviews alternative chemistries with a potential higher return. Liberation of oxygen for accepting the holes is a kinetically demanding half reaction afflicted with kinetic hindrances and high overpotentials, while at the same time no marketable value is created (atmospheric ...


DNA Electrochemistry and Electrochemical Sensors for Nucleic Acids.

Sensitive, specific, and fast analysis of nucleic acids (NAs) is strongly needed in medicine, environmental science, biodefence, and agriculture for the study of bacterial contamination of food and beverages and genetically modified organisms. Electrochemistry offers accurate, simple, inexpensive, and robust tools for the development of such analytical platforms that can successfully compete with other approaches for NA detection. Here, electrode reactions of DNA, basic principles of electrochemical NA anal...

Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a NiFe Hydrogenase.

Understanding the chemistry of redox proteins demands methods that provide precise control over redox centers within the protein. The technique of protein film electrochemistry, in which a protein is immobilized on an electrode surface such that the electrode replaces physiological electron donors or acceptors, has provided functional insight into the redox reactions of a range of different proteins. Full chemical understanding requires electrochemical control to be combined with other techniques that can a...

Focus on Electrochemistry in (Bio)-Nanoanalysis, Electromigration, and Liquid Phase Separations.

Organic Electrochemistry and a Role Reversal: Using Synthesis to Optimize Electrochemical Methods.

Diblock copolymers are excellent coatings for microelectrode arrays because they provide a stable surface that can support both synthetic and analytical electrochemistry. However, the surfaces that are optimal for synthetic studies are not the same as the surfaces that are optimal for analytical studies. Hence, no one surface provides an ideal platform for both building and analyzing a molecular library. Fortunately, the synthetic chemistry available on a microelectrode array allows for manipulation of the ...

When Electrochemistry Met Methane: Rapid Catalyst Oxidation Fuels Hydrocarbon Functionalization.

Common Principles of Molecular Electronics and Nanoscale Electrochemistry.

The merging of nanoscale electronics and electrochemistry can potentially modernize the way electronic devices are currently engineered or constructed. It is well known that the greatest challenges will involve not only miniaturizing and improving the performance of mobile devices, but also manufacturing reliable electrical vehicles, and engineering more efficient solar panels and energy storage systems. These are just a few examples of how technological innovation is dependent on both electrochemical and e...

Electrogenerated Cationic Reactive Intermediates: The Pool Method and Further Advances.

Electrochemistry serves as a powerful method for generating reactive intermediates, such as organic cations. In general, there are two ways to use reactive intermediates for chemical reactions: (1) generation in the presence of a reaction partner and (2) generation in the absence of a reaction partner with accumulation in solution as a "pool" followed by reaction with a subsequently added reaction partner. The former approach is more popular because reactive intermediates are usually short-lived transient s...

Graphene oxide electrochemistry: the electrochemistry of graphene oxide modified electrodes reveals coverage dependent beneficial electrocatalysis.

The modification of electrode surfaces is widely implemented in order to try and improve electron transfer kinetics and surface interactions, most recently using graphene related materials. Currently, the use of 'as is' graphene oxide (GO) has been largely overlooked, with the vast majority of researchers choosing to reduce GO to graphene or use it as part of a composite electrode. In this paper, 'as is' GO is explored and electrochemically characterized using a range of electrochemical redox probes, namely...

Advances in enzyme bioelectrochemistry.

Bioelectrochemistry can be defined as a branch of Chemical Science concerned with electron-proton transfer and transport involving biomolecules, as well as electrode reactions of redox enzymes. The bioelectrochemical reactions and system have direct impact in biotechnological development, in medical devices designing, in the behavior of DNA-protein complexes, in green-energy and bioenergy concepts, and make it possible an understanding of metabolism of all living organisms (e.g. humans) where biomolecules a...

Dual Signaling DNA Electrochemistry: An Approach To Understand DNA Interfaces.

Electrochemical DNA biosensors composed of a redox marker modified nucleic acid probe tethered to a solid electrode is a common experimental construct for detecting DNA and RNA targets, proteins, inorganic ions, and even small molecules. This class of biosensors generally relies on the binding-induced conformational changes in the distance of the redox marker relative to the electrode surface such that the charge transfer is altered. The conventional design is to attach the redox species to the distal end o...

Synthesis, characterization and electrochemistry studies of iron (iii) complex with curcumin ligand.

Iron overload is a serious clinical condition for humans and is a key target in drug development. The aim of this study was to investigate the coordination of iron(III) ions with curcumin ligand that may be used in the treatment of iron overload. Iron(III) complex of curcumin was synthesized and structurally characterized in its solid and solution state by FT-IR, UV-Vis, elemental analysis, and magnetic susceptibility. Electrochemical behavior of the ligand and the complexes were examined using cyclic volta...

Electrochemical C-H/N-H Activation by Water-Tolerant Cobalt-Catalysis at Room Temperature.

Electrochemistry enabled C-H/N-H functionalizations at room temperature by external oxidant-free cobalt catalysis. Thus, the sustainable cobalt electrocatalysis manifold occurred with excellent levels of chemo and positional selectivity with ample scope, allowing for electrochemical C-H activation under exceedingly mild reaction conditions at room temperature in water.

Investigation of α-MnOTunneled Structures as Model Cation Hosts for Energy Storage.

Future advances in energy storage systems rely on identification of appropriate target materials and deliberate synthesis of the target materials with control of their physiochemical properties in order to disentangle the contributions of distinct properties to the functional electrochemistry. This goal demands systematic inquiry using model materials that provide the opportunity for significant synthetic versatility and control. Ideally, a material family that enables direct manipulation of characteristics...

Electrochemistry of Single Enzymes: Fluctuations of Catalase Activities.

Dynamic fluctuations of the catalytic ability of single catalase enzymes towards hydrogen peroxide decomposition are observed via the nano-impact technique. The electrochemical signals of single enzymes show that the catalytic ability of single enzymes can temporarily be much higher than expected from the classical, time-averaged Michaelis-Menten description. By combination of experimental data with a new theoretical model, we interpret the unusual enhancement of the single catalase signal and find that sin...

Electron Transfer and Geometric Conversion of Co-NO Moiety in Saddled Porphyrins: Implications for Trigger Role of Tetrapyrrole Distortion.

The electrons of NO and Co are strongly delocalized in normal {Co-NO}8 species. In this work, {Co-NO}8 complexes are induced to convert from (CoII)+•-NO• to CoIII-NO- by a core contraction of 0.06 Å in saddled cobalt(II) porphyrins. This intramolecular electron transfer mechanism indicates that nonplanarity of porphyrin is involved in driving conversion of the NO units from electrophilic NO• as a bent geometry to nucleophilic NO- as a linear geometry. This implies that distortion acts as a trigger in...

Synthesis, Characterization, and Electrochemistry of Layered Chalcogenides LiCu Ch ( Ch = Se, Te).

Two novel compounds, LiCu Ch ( Ch = Se or Te), were synthesized by direct reaction between elements in closed ampules inside corundum crucibles. Both compounds are highly air-sensitive and possess an anti-PbClF crystal structure, which contains Cu Ch layer analogues to the Fe[As/Se] layers in Fe-based superconductors. In electrochemical battery cells, Li can be almost completely extracted from LiCuSe, but the reverse reaction is only partly successful and LiSe and CuSe are formed instead. LiCuSe exhibits a ...

Ferrocene-Alkynyl Conjugated Molecular Wires: Synthesis, Characterization and Conductance Properties.

A novel series of 1, 2, 3-substituted ferrocene-based wires 1a-2a and 4b-5b have been synthesized using iterative Pd-mediated Sonogashira cross-coupling methodology.The molecular structures of 2a and 3b were determined by single-crystal X-ray analysis.Electrochemical data showed that there was a strong electronic communication among the ferrocenyl moieties in 1b-5b. The UV absorption spectra indicated that replacing 1, 1'-substituted ferrocene unit with 1, 2, 3-substituted ferrocene moiety causes delocaliza...

Deliberately Designed Atomic-Level Silver Containing Inter-phase Results in Improved Rate Capability and Utilization of Silver Hollandite for Lithium-Ion Storage.

α-MnO2 structured materials are generally classified as semi-conductors, thus we present a strategy to increase electro-chemical utilization through design of a conductive material interface. Surface treatment of silver hollandite (AgxMn8O16) with Ag+ (Ag2O) provides significant benefit to the resultant electrochemistry, including a 2-4 fold decreased charge transfer resistance, 2-fold increase in deliverable energy den-sity at high rate, and 2-6 fold increased in effective lithium ion diffusion. The impro...

Ultrafast tailoring of carbon surfaces via electrochemically attached triazolinediones.

The straightforward coupling between a triazolinedione (TAD) unit and citronellyl derivatives via an Alder-ene reaction has been exploited to tailor the physicochemical surface properties of glassy carbon surfaces (GC) in an ultrafast and additive-free manner. For this purpose, we first covalently grafted a TAD precursor onto GC via the electrochemical reduction of an in situ generated diazonium salt, which was then electrochemically oxidized into the desired GC-bonded TAD unit. A kinetic study of the modif...

Paper-based polymer electrodes for bioanalysis and electrochemistry of neurotransmitters.

This article describes the preparation and characterization of PEDOT-coated paper electrodes. Their specific behavior was investigated, especially the impact of electrode shape on the electrochemical properties. It was found that different electrode geometries promote different results, largely because of a potential drop in the bulk of the electrode material. More importantly, the suitability of these substrates for bio- and neurochemical analyses was investigated. The paper electrodes were found to offer ...

Unprecedented carbon sub-microspheres with a porous hierarchy for highly efficient oxygen electrochemistry.

Developing efficient and robust electrocatalysts for bifunctional oxygen electrocatalysis is crucial for renewable energy technology. Herein, nitrogen and phosphorus co-doped carbon sub-microspheres with fascinating mesostructures are rationally synthesized through an effective soft-templating strategy. The unique features of substantial doping, large surface areas and well-defined porosity endow the dual-doped carbons with high-density electroactive sites, considerable active surface areas and improved mas...

Cobaltocenylidene, a mesoionic metalloceno carbene, stabilized in a gold(III) complex.

Oxidative addition of cobaltoceniumdiazonium bis(hexafluoridophosphate) with (pseudo)halide aurates afforded gold(III) complexes containing zwitterionic cobaltoceniumide as a ligand. Its selenium derivative, cobaltoceniumselenolate, was obtained by an electrophilic aromatic substitution reaction of iodocobaltocenium iodide with Na2Se. Spectroscopic and structural data in combination with DFT calculations show that this cobaltocenylidene species is a mesoionic carbene quite different from common N-heterocycl...


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