Ordered Solvents and Ionic Liquids Can Be Harnessed for Electrostatic Catalysis

Journal of the American Chemical Society, Год журнала: 2020, Номер 142(29), С. 12826 - 12833

Опубликована: Июль 1, 2020

Herein, we employ classical molecular dynamics simulations using the Drude oscillator-based polarizable force field, quantum chemical calculations, and ONIOM multiscale calculations to study (a) how an external field orders solvent environment in a reaction then (b) whether absence of this same applied ordered alone can electrostatically catalyze when compared with corresponding disordered solvent. Our results show that 0.2 V/Å electric which is below threshold for bond breaking molecules, leads significant ordering bulk methanol ionic liquid [EMIM][BF4]. Importantly, lowers activation energy hydrogen-transfer o-alkylphenyl ketones excess 20 kcal/mol by over 30 Even 0.1 has effects ca. 10 kcal/mol, respectively. This work suggests possible strategy scaling electrostatic catalysis applying pulsed medium maintain while allowing proceed largely field.

Язык: Английский

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Bipolar (Bio)electroanalysis

Annual Review of Analytical Chemistry, Год журнала: 2021, Номер 14(1), С. 65 - 86

Опубликована: Май 4, 2021

This contribution reviews a selection of the most recent studies on use bipolar electrochemistry in framework analytical chemistry. Despite fact that concept is not new, with several important dating back to middle last century, completely novel and very original approaches have emerged over decade. current revival illustrates scientists still (re)discover some exciting virtues this approach, which are useful many different areas, especially for tackling challenges an unconventional way. In cases, “wireless” strategy enables carrying out measurements simply possible classic electrochemical approaches. review will hopefully stimulate new ideas trigger integrate aspects their work order drive topic into yet unexplored eventually unexpected directions.

Язык: Английский

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Electroreductive Nickel‐Catalyzed Thiolation: Efficient Cross‐Electrophile Coupling for C−S Formation

Chemistry - A European Journal, Год журнала: 2020, Номер 27(15), С. 4883 - 4887

Опубликована: Дек. 28, 2020

Sulfur-containing molecules are of utmost topical importance towards the effective development pharmaceuticals and functional materials. Herein, we present an efficient mild electrochemical thiolation by cross-electrophile coupling alkyl bromides with functionalized bench-stable thiosulfonates to access sulfides excellent efficacy broad group tolerance. Cyclic voltammetry potentiostatic analysis were performed elucidate mechanistic insights into this electrocatalytic reaction.

Язык: Английский

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Mapping the Distribution of Potential Gradient in Bipolar Electrochemical Systems through Luminol Electrochemiluminescence Imaging

Analytical Chemistry, Год журнала: 2021, Номер 93(23), С. 8152 - 8160

Опубликована: Июнь 3, 2021

Bipolar electrochemistry has been regarded as a powerful and sustainable electrochemical process for the synthesis of novel functional materials. The appealing features this technology, such wireless nature bipolar electrode (BPE) possibility to drive simultaneously reactions on multiple BPEs placed in same cell, together with change shape positioning driving electrodes, give significant freedom design reaction systems. Nevertheless, cell geometry dramatically affects distribution intensity potential gradient generated BPE surface its monitoring is hampered due BPE. In present study, we propose use electrochemiluminescence (ECL) an imaging technique map cells different geometries. proposed approach exploits strong ECL emission luminol/hydrogen peroxide (H2O2) system at anodic pole BPE, when total applied voltage (Etot) enough trigger reaction. Since luminol rather intense relatively stable, evolution function Etot can be monitored using digital camera, allowing elucidation profile every configuration. suggested represents valuable reliable method systems readily employed type

Язык: Английский

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Investigation of the redox behavior of biochar-based bipolar electrochemistry in porous media

Chemical Engineering Journal, Год журнала: 2023, Номер 470, С. 144384 - 144384

Опубликована: Июнь 25, 2023

Язык: Английский

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A novel high throughput electrochemistry corrosion test method: Bipolar electrochemistry

Current Opinion in Electrochemistry, Год журнала: 2023, Номер 39, С. 101263 - 101263

Опубликована: Март 3, 2023

Язык: Английский

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Paper-based bipolar electrode electrochemiluminescence sensors for point-of-care testing

Biosensors and Bioelectronics, Год журнала: 2023, Номер 235, С. 115384 - 115384

Опубликована: Май 18, 2023

Язык: Английский

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Wireless control of nerve growth using bipolar electrodes: a new paradigm in electrostimulation

Biomaterials Science, Год журнала: 2024, Номер 12(9), С. 2180 - 2202

Опубликована: Янв. 1, 2024

Electrical activity underpins all life, but is most familiar in the nervous system, where long range electrical signalling essential for function. When this lost (

Язык: Английский

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Electrosynthesis with split-bipolar electrodes

Current Opinion in Electrochemistry, Год журнала: 2024, Номер 44, С. 101443 - 101443

Опубликована: Янв. 13, 2024

Bipolar electrochemistry has recently gained renewed interest as a valuable electrochemical technique for electrosynthesis applications. The peculiarity of this technology is the wireless mode electrode reactions, that redox processes can be driven on conductive material, namely bipolar (BPE), without need an ohmic contact. A split-BPE (s-BPE) particular type BPE, where two conductors are connected using ammeter placed outside electrolytic solution. While configuration allows to behave like single main advantage such system current measured in situ, promoting search optimized set conditions successful application. Herein, we review latest trends electrifying synthesis exploit concept s-BPE polymeric materials and fluorination small organic molecules.

Язык: Английский

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Recent Advances in Electrochemiluminescence-Based Systems for Mammalian Cell Analysis

Micromachines, Год журнала: 2020, Номер 11(5), С. 530 - 530

Опубликована: Май 22, 2020

Mammalian cell analysis is essential in the context of both fundamental studies and clinical applications. Among various techniques available for analysis, electrochemiluminescence (ECL) has attracted significant attention due to its integration electrochemical spectroscopic methods. In this review, we summarize recent advances ECL-based systems developed mammalian analysis. The review begins with a summary developments luminophores that opened door ECL applications biological samples. Secondly, imaging are introduced as an emerging technique visualize single-cell morphologies intracellular molecules. subsequent section, sensors past decade summarized, use which made highly sensitive detection cell-derived molecules possible. Although immunoassays well terms commercial use, sensing biomolecules at level remains challenge. Emphasis therefore placed on directly detect cellular from small portions cells or even single cells. Finally, development bipolar electrode devices assays introduced. To conclude, direction research field application prospects described.

Язык: Английский

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