Photons or Electrons? A Critical Comparison of Electrochemistry and Photoredox Catalysis for Organic Synthesis

Chemical Reviews, Год журнала: 2021, Номер 122(2), С. 2487 - 2649

Опубликована: Ноя. 9, 2021

Redox processes are at the heart of synthetic methods that rely on either electrochemistry or photoredox catalysis, but how do and catalysis compare? Both approaches provide access to high energy intermediates (e.g., radicals) enable bond formations not constrained by rules ionic 2 electron (e) mechanisms. Instead, they 1e mechanisms capable bypassing electronic steric limitations protecting group requirements, thus enabling chemists disconnect molecules in new different ways. However, while providing similar intermediates, differ several physical chemistry principles. Understanding those differences can be key designing transformations forging disconnections. This review aims highlight these similarities between comparing their underlying principles describing impact electrochemical photochemical methods.

Язык: Английский

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Janus Nanoparticles: From Fabrication to (Bio)Applications

ACS Nano, Год журнала: 2021, Номер 15(4), С. 6147 - 6191

Опубликована: Март 19, 2021

Janus nanoparticles (JNPs) refer to the integration of two or more chemically discrepant composites into one structure system. Studies JNPs have been significant interest due their interesting characteristics stemming from asymmetric structures, which can integrate different functional properties and perform synergetic functions simultaneously. Herein, we present recent progress particles, comprehensively detailing fabrication strategies applications. First, classification is divided three blocks, consisting polymeric composites, inorganic hybrid polymeric/inorganic composites. Then, are alternately summarized, examining self-assembly strategy, phase separation seed-mediated polymerization, microfluidic preparation nucleation growth methods, masking methods. Finally, various intriguing applications presented, including solid surfactants agents, micro/nanomotors, biomedical such as biosensing, controlled drug delivery, bioimaging, cancer therapy, combined theranostics. Furthermore, challenges future works in this field provided.

Язык: Английский

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Configuration regulation of active sites by accurate doping inducing self-adapting defect for enhanced photocatalytic applications: A review

Coordination Chemistry Reviews, Год журнала: 2022, Номер 478, С. 214970 - 214970

Опубликована: Дек. 24, 2022

Язык: Английский

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Recent Advancements in Bipolar Electrochemical Methods of Analysis

Analytical Chemistry, Год журнала: 2020, Номер 93(1), С. 103 - 123

Опубликована: Ноя. 24, 2020

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTRecent Advancements in Bipolar Electrochemical Methods of AnalysisKira L. RahnKira RahnDepartment Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, 50011-1021, United StatesMore by Kira RahnView Biography and Robbyn K. Anand*Robbyn AnandDepartment States*Email: [email protected]More AnandView Biographyhttp://orcid.org/0000-0003-2801-8280Cite this: Anal. Chem. 2021, 93, 1, 103–123Publication Date (Web):November 24, 2020Publication History Published online24 November 2020Published inissue 12 January 2021https://pubs.acs.org/doi/10.1021/acs.analchem.0c04524https://doi.org/10.1021/acs.analchem.0c04524review-articleACS PublicationsCopyright © 2020 American Chemical SocietyRequest reuse permissionsArticle Views3860Altmetric-Citations73LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Electrochemistry,Electrodes,Luminescence,Oxidation,Redox reactions Get e-Alerts

Язык: Английский

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Organic Electrosynthesis Towards Sustainability: Fundamentals and Greener Methodologies

The Chemical Record, Год журнала: 2021, Номер 21(9), С. 2453 - 2471

Опубликована: Май 5, 2021

Abstract The adoption of new measures that preserve our environment, on which survival depends, is a necessity. Electro‐organic processes are sustainable per se , by producing the activation substrate electron transfer at normal pressure and room temperature. In recent years, highly crescent number works organic electrosynthesis available. Novel strategies electrode being developed enabling construction great variety complex molecules. However, possibility scaled‐up mandatory in terms sustainability. Thus, some electrochemical methodologies have demonstrated to report best results reducing pollution saving energy. this personal account, these methods been compiled, organized as follows: • Direct discharge Paired reactions. Organic transformations utilizing electrocatalysis (in absence heavy metals). Selected protocols herein presented discussed with representative examples. Final perspectives reflections also considered.

Язык: Английский

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Recent Advances in Electrochemical CO₂ Reduction on Indium‐Based Catalysts

ChemCatChem, Год журнала: 2020, Номер 13(2), С. 514 - 531

Опубликована: Окт. 5, 2020

Abstract Electrochemical reduction of CO 2 (CO RR) is a promising solution to mitigate the ever‐increasing global carbon emission. Indium‐based catalysts have been extensively studied for catalyzing production formate, CO, and even multi‐carbon molecules from . Rational design catalyst, however, urgently needed further improve activity, selectivity, stability sake commercialization. Herein, we comprehensively reviewed recent progresses on indium based RR catalysts. Specifically, aspects regarding nature active sites, reaction mechanism, impact operating conditions are overviewed. The reported indium‐based monometallic bimetallic in literature summarized, as well. Future directions should be focused understanding catalyst system during under industrial‐relevant conditions.

Язык: Английский

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The green chemistry paradigm in modern organic synthesis

Russian Chemical Reviews, Год журнала: 2023, Номер 92(12), С. RCR5104 - RCR5104

Опубликована: Дек. 1, 2023

After the appearance of green chemistry concept, which was introduced in vocabulary early 1990s, its main statements have been continuously developed and modified. Currently, there are 10–12 cornerstones that should form basis for an ideal chemical process. This review analyzes accumulated experience achievements towards design products processes reduce or eliminate use generation hazardous substances. The presents views leading Russian scientists specializing various fields this subject, including homogeneous heterogeneous catalysis, fine basic organic synthesis, electrochemistry, polymer chemistry, based on bio-renewable feedstocks energetic compounds materials. A new approach to quantitative evaluation environmental friendliness by authors is described. <br> bibliography includes 1761.

Язык: Английский

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Electro-induced biochar-embedded-SIPN hydrogel as discrete bipolar electrodes for selective oxidation and enrichment of trace thallium(Ι)

Chemical Engineering Journal, Год журнала: 2024, Номер 489, С. 151278 - 151278

Опубликована: Апрель 15, 2024

Язык: Английский

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Stroking through Electrolyte: Liquid Metal Droplet Propulsion through Pulse Time Modulation

Advanced Functional Materials, Год журнала: 2024, Номер 34(17)

Опубликована: Янв. 4, 2024

Abstract Active droplets play important roles in microfluidics, robotics, and micro‐electromechanical systems. As a special class of active that are conductive, reactive, high surface tension, liquid metal (LMDs) can be driven by electric‐field‐induced (Marangoni) flows to function as reconfigurable components actuators, sensors, catalytic reactors, antennas. Stimulating LMDs using an electric field induces concurrent electro‐hydrodynamic electrochemical oxidation (passivation). It is however difficult decouple these two effects which brings complexity controlling LMD motions. To address this challenge, pulse time modulation (PTM) signals used. PTM enables controlled displacement propelling the forward during voltage‐on phases facilitating recovery from voltage‐off phases. Counterintuitively, taking such intermittent “rests”, effectively inhibit unfavorable impact oxidation, granting motion controllability. Combining high‐speed imaging, tracking, machine learning, analysis, study reveals how oxide formation/dissolution interplay generate well‐defined regimes. The further develops quasi‐analytical model describe droplet motions designs rotary motor showcase versatility approach. This work provides fundamental framework viable strategy for designing innovative metal‐based

Язык: Английский

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Liquid‐Based Exfoliation of Black Phosphorus into Phosphorene and Its Application for Energy Storage Devices

Small Structures, Год журнала: 2021, Номер 2(5)

Опубликована: Янв. 27, 2021

Black phosphorus (BP) as a rising star among 2D materials has attracted attention for wide range of applications due to its fascinating properties. The key point the real application phosphorene depends on exfoliation technique produce high‐quality nanosheets. In recent years, tremendous efforts have been made in preparation and energy storage phosphorene‐based hybrid electrodes. Herein, state‐of‐the‐art liquid‐based characterization fabricated by sonication, anodic cathodic electrochemical exfoliation, bipolar diverse solutions conditions are discussed. addition, properties mechanism electrodes rechargeable batteries supercapacitors Finally, challenges opportunities nanosheets terms addressed.

Язык: Английский

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