An Efficient, Visible Light Driven, Selective Oxidation of Aromatic Alcohols and Amines with O2 Using BiVO4/g-C3N4 Nanocomposite: A Systematic and Comprehensive Study toward the Development of a Photocatalytic Process DOI
Subhajyoti Samanta, Santimoy Khilari, Debabrata Pradhan

и другие.

ACS Sustainable Chemistry & Engineering, Год журнала: 2017, Номер 5(3), С. 2562 - 2577

Опубликована: Янв. 10, 2017

In this study, BiVO4 was prepared by a hydrothermal synthesis route in the presence of sodium dodecyl sulfate using aqueous NH3 as precipitant. g-C3N4 combustion method melamine. order to develop highly efficient photocatalyst, heterojunction catalyst based on and prepared. Different amounts were mixed annealed obtain photocatalysts. FeVO4 LaVO4 also for comparative catalytic investigation. Catalysts characterized series complementary combinations powder X-ray diffraction, thermogravimetric analysis, elemental N2 adsorption–desorption, scanning electron microscopy, transmission temperature-programmed desorption CO2, diffuse reflectance ultraviolet visible spectroscopy, photoelectron photoluminescence photoelectrochemical studies. investigated light driven oxidation benzyl alcohol, amine, aniline with O2. propose electrons, holes, radicals mediated reaction pathways, reactions performed an electron/hole/radical scavenger. Further, confirm various products formed during photocatalytic aniline, several model carried out. Based results obtained, mechanism structure–activity relationship established.

Язык: Английский

Photopolymerization in 3D Printing DOI Creative Commons
Ali Bagheri, Jianyong Jin

ACS Applied Polymer Materials, Год журнала: 2019, Номер 1(4), С. 593 - 611

Опубликована: Фев. 20, 2019

The field of 3D printing is continuing its rapid development in both academic and industrial research environments. technologies has opened new implementations prototyping, tooling, dentistry, microfluidics, biomedical devices, tissue engineering, drug delivery, etc. Among different techniques, photopolymerization-based process (such as stereolithography digital light processing) offers flexibility over the final properties printed materials optical, chemical, mechanical properties) using versatile polymer chemistry. strategy behind photopolymerization based on monomers/oligomers liquid state (in presence photoinitiators) that can be photopolymerized (via radical or cationic mechanism) upon exposure to source wavelengths (depending photoinitiator system). An overview recent evolutions highlights novel printable photopolymers provided herein. Challenges limit use conventional (i.e., initiation under UV light) together with prospective solutions such incorporation photosensitive initiators red-shifted absorptions are also discussed detail. This review spotlights progress controlled living techniques reversible addition–fragmentation chain-transfer polymerization) printing, which will pave way for widespread growth generations features possibility postprinting modifications.

Язык: Английский

Процитировано

1094

Electrochemical strategies for C–H functionalization and C–N bond formation DOI Creative Commons
Markus D. Kärkäs

Chemical Society Reviews, Год журнала: 2018, Номер 47(15), С. 5786 - 5865

Опубликована: Янв. 1, 2018

This review provides an overview of the use electrochemistry as appealing platform for expediting carbon–hydrogen functionalization and carbon–nitrogen bond formation.

Язык: Английский

Процитировано

880

Reversible-deactivation radical polymerization (Controlled/living radical polymerization): From discovery to materials design and applications DOI
Nathaniel Corrigan, Kenward Jung, Graeme Moad

и другие.

Progress in Polymer Science, Год журнала: 2020, Номер 111, С. 101311 - 101311

Опубликована: Окт. 14, 2020

Язык: Английский

Процитировано

764

Photomediated controlled radical polymerization DOI Creative Commons
Xiangcheng Pan, Mehmet Atilla Taşdelen, Joachim Laun

и другие.

Progress in Polymer Science, Год журнала: 2016, Номер 62, С. 73 - 125

Опубликована: Июль 16, 2016

Язык: Английский

Процитировано

631

A Toolbox Approach To Construct Broadly Applicable Metal-Free Catalysts for Photoredox Chemistry: Deliberate Tuning of Redox Potentials and Importance of Halogens in Donor–Acceptor Cyanoarenes DOI
Elisabeth Speckmeier, Tillmann G. Fischer, Kirsten Zeitler

и другие.

Journal of the American Chemical Society, Год журнала: 2018, Номер 140(45), С. 15353 - 15365

Опубликована: Окт. 2, 2018

The targeted choice of specific photocatalysts has been shown to play a critical role for the successful realization challenging photoredox catalytic transformations. Herein, we demonstrate implementation rational design strategy series deliberate structural manipulations cyanoarene-based, purely organic donor-acceptor photocatalysts, using 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as starting point. Systematic modifications both donor substituents well acceptors' molecular core allowed us identify strongly oxidizing reducing catalysts (e.g., an unprecedented detriflation unactivated naphthol triflate), which additionally offer remarkably balanced redox potentials with predictable trends. Especially halogen arene substitutions are instrumental our alterations catalysts' properties. Based on their preeminent electrochemical and photophysical characteristics, all novel, were evaluated in three challenging, mechanistically distinct classes benchmark reactions (either requiring balanced, highly or properties) enormous potential customizable that outperform complement prevailing typical best photocatalysts.

Язык: Английский

Процитировано

618

Photochemistry and photophysics of MOFs: steps towards MOF-based sensing enhancements DOI
Ekaterina A. Dolgopolova, Allison M. Rice, Corey R. Martin

и другие.

Chemical Society Reviews, Год журнала: 2018, Номер 47(13), С. 4710 - 4728

Опубликована: Янв. 1, 2018

In combination with porosity and tunability, light harvesting, energy transfer, photocatalysis, are facets crucial for engineering of MOF-based sensors.

Язык: Английский

Процитировано

588

Technological Innovations in Photochemistry for Organic Synthesis: Flow Chemistry, High-Throughput Experimentation, Scale-up, and Photoelectrochemistry DOI
Laura Buglioni, Fabian Raymenants, Aidan Slattery

и другие.

Chemical Reviews, Год журнала: 2021, Номер 122(2), С. 2752 - 2906

Опубликована: Авг. 10, 2021

Photoinduced chemical transformations have received in recent years a tremendous amount of attention, providing plethora opportunities to synthetic organic chemists. However, performing photochemical transformation can be quite challenge because various issues related the delivery photons. These challenges barred widespread adoption steps industry. past decade, several technological innovations led more reproducible, selective, and scalable photoinduced reactions. Herein, we provide comprehensive overview these exciting advances, including flow chemistry, high-throughput experimentation, reactor design scale-up, combination photo- electro-chemistry.

Язык: Английский

Процитировано

544

Seeing the Light: Advancing Materials Chemistry through Photopolymerization DOI Creative Commons
Nathaniel Corrigan, Jonathan Yeow,

Peter R. Judzewitsch

и другие.

Angewandte Chemie International Edition, Год журнала: 2018, Номер 58(16), С. 5170 - 5189

Опубликована: Авг. 1, 2018

The application of photochemistry to polymer and material science has led the development complex yet efficient systems for polymerization, post-functionalization, advanced materials production. Using light activate chemical reaction pathways in these not only leads exquisite control over dynamics, but also allows synthetic protocols be easily achieved. Compared polymerization mediated by thermal, chemical, or electrochemical means, photoinduced can potentially offer more versatile methods macromolecular synthesis. We highlight utility as an energy source mediating photopolymerization, present some promising examples which are advancing production through their exploitation photochemistry.

Язык: Английский

Процитировано

535

50th Anniversary Perspective: Living Polymerization—Emphasizing the Molecule in Macromolecules DOI Creative Commons
Robert B. Grubbs, Robert H. Grubbs

Macromolecules, Год журнала: 2017, Номер 50(18), С. 6979 - 6997

Опубликована: Сен. 17, 2017

The ideal of living polymerization has defined research in polymer chemistry over the past 50 years. In this Perspective, we present case that concept enabled treatment polymers as organic molecules, rather than impure mixtures species, and allowed translation methods developed by synthetic chemists into ever more accessible and/or controlled methods. concurrent development rapid analytical for screening new characteristics, chiefly size exclusion chromatography, greatly aided expansion

Язык: Английский

Процитировано

345

Organocatalyzed Atom Transfer Radical Polymerization Using N-Aryl Phenoxazines as Photoredox Catalysts DOI
Ryan M. Pearson, Chern‐Hooi Lim, Blaine G. McCarthy

и другие.

Journal of the American Chemical Society, Год журнала: 2016, Номер 138(35), С. 11399 - 11407

Опубликована: Авг. 24, 2016

N-Aryl phenoxazines have been synthesized and introduced as strongly reducing metal-free photoredox catalysts in organocatalyzed atom transfer radical polymerization for the synthesis of well-defined polymers. Experiments confirmed quantum chemical predictions that, like their dihydrophenazine analogs, photoexcited states phenoxazine are achieve superior performance when they possess charge character. We compare to previously reported dihydrophenazines phenothiazines gain insight into these establish principles catalyst design. A key finding reveals that maintenance a planar conformation during catalytic cycle encourages macromolecules. Using principles, we realized core substituted visible light performed UV-absorbing well organic photocatalysts polymerization. this irradiating with white LEDs resulted production polymers targeted molecular weights through achieving quantitative initiator efficiencies, which dispersities ranging from 1.13 1.31.

Язык: Английский

Процитировано

311