Effects of the Chalcogenide Identity in N‐Aryl Phenochalcogenazine Photoredox Catalysts
Sign Up to like & getrecommendations! Published in 2022 at "Chemcatchem"
DOI: 10.1002/cctc.202200485
Abstract: Phenochalcogenazines such as phenoxazines and phenothiazines have been widely employed as photoredox catalysts (PCs) in small molecule and polymer synthesis. However, the effect of the chalcogenide in these catalysts has not been fully investigated. In… read more here.
Keywords: effects chalcogenide; photoredox; identity aryl; aryl phenochalcogenazine ... See more keywords
The Different Faces of Photoredox Catalysts: Visible-Light-Mediated Atom Transfer Radical Addition (ATRA) Reactions of Perfluoroalkyl Iodides with Styrenes and Phenylacetylenes
Sign Up to like & getrecommendations! Published in 2018 at "ACS Catalysis"
DOI: 10.1021/acscatal.8b00847
Abstract: A photoredox-catalyzed procedure for the iodoperfluoroalkylation of styrenes and phenylacetylenes using readily available copper phenanthroline catalyst is reported. In contrast to commonly employed [Ru(bpy)3]Cl2, [Ru(phen)3]Cl2 or fac-Ir(ppy)3, [Cu(dap)2]Cl is capable to convert styrenes to the… read more here.
Keywords: different faces; catalysts visible; transfer; photoredox catalysts ... See more keywords
Photoinduced Arylation of Acridinium Salts: Tunable Photoredox Catalysts for C-O Bond Cleavage.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c12961
Abstract: A photoinduced arylation of N-substituted acridinium salts has been developed and has exhibited a high functional group tolerance (e.g., halogen, nitrile, ketone, ester, and nitro). A broad range of well-decorated C9-arylated acridinium-based catalysts with fine-tuned… read more here.
Keywords: bond cleavage; photoredox catalysts; acridinium; photoinduced arylation ... See more keywords
Intramolecular Charge Transfer and Ion Pairing in N,N-Diaryl Dihydrophenazine Photoredox Catalysts for Efficient Organocatalyzed Atom Transfer Radical Polymerization.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.6b11022
Abstract: Photoexcited intramolecular charge transfer (CT) states in N,N-diaryl dihydrophenazine photoredox catalysts are accessed through catalyst design and investigated through combined experimental studies and density functional theory (DFT) calculations. These CT states are reminiscent of the… read more here.
Keywords: polymerization; radical polymerization; transfer; ion pairing ... See more keywords
Exploiting Charge-Transfer States for Maximizing Intersystem Crossing Yields in Organic Photoredox Catalysts.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.8b01001
Abstract: A key feature of prominent transition-metal-containing photoredox catalysts (PCs) is high quantum yield access to long-lived excited states characterized by a change in spin multiplicity. For organic PCs, challenges emerge for promoting excited-state intersystem crossing… read more here.
Keywords: intersystem crossing; photoredox catalysts; excited state; charge transfer ... See more keywords
Phenothiazine derivatives as photoredox catalysts for cationic and radical photosensitive resins for 3D printing technology and photocomposite synthesis
Sign Up to like & getrecommendations! Published in 2019 at "Polymer Chemistry"
DOI: 10.1039/c9py01265f
Abstract: New phenothiazine derivatives are synthesized and proposed as high performance visible light photoinitiators. read more here.
Keywords: phenothiazine; catalysts cationic; cationic radical; derivatives photoredox ... See more keywords
Mechanisms of photoredox catalysts: the role of optical spectroscopy
Sign Up to like & getrecommendations! Published in 2021 at "Sustainable Energy and Fuels"
DOI: 10.1039/d0se01454k
Abstract: Photoinduced organic transformations have stimulated the organic chemistry community to develop light-driven renewed reaction methodologies, which in many cases are complementary to standard thermal catalysis. This revitalization of photoinduced transformations is in part due to… read more here.
Keywords: spectroscopy; photoredox catalysts; optical spectroscopy; energy ... See more keywords
Natural photoredox catalysts promote light-driven lytic polysaccharide monooxygenase reactions and enzymatic turnover of biomass
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2204510119
Abstract: Significance Microbial decomposition of organic litter is faster above ground than below ground, and this effect has been attributed to sunlight-driven modification of aromatic constituents, leading to increased susceptibility of polysaccharides to enzymatic degradation. We… read more here.
Keywords: lytic polysaccharide; catalysts promote; polysaccharide; biomass ... See more keywords
Organic photoredox catalysts: tuning the operating mechanisms in the degradation of pollutants
Sign Up to like & getrecommendations! Published in 2023 at "Pure and Applied Chemistry"
DOI: 10.1515/pac-2022-1206
Abstract: Abstract Photocatalysis is an emerging area of chemistry that takes advantage of light as the primary source of energy to carry out chemical transformations. In this context, organic photocatalysts appear as an alternative that has… read more here.
Keywords: organic photoredox; chemistry; organic photocatalysts; degradation ... See more keywords