Journal of Water Process Engineering, Год журнала: 2024, Номер 65, С. 105808 - 105808
Опубликована: Июль 29, 2024
Язык: Английский
Chemistry - A European Journal, Год журнала: 2024, Номер 30(31)
Опубликована: Март 28, 2024
Abstract Photoinduced aryl radical generation is a powerful strategy in organic synthesis that facilitates the formation of diverse carbon‐carbon and carbon‐heteroatom bonds. The synthetic applications photoinduced complex compounds, including natural products, physiologically significant molecules, functional materials, have received immense attention. An overview current developments production methods their uses given this article. A generalized idea how to choose reagents approach for radicals described, along with techniques associated mechanistic insights. Overall, article offers critical assessment results as well selection reaction parameters specific context cascades, cross‐coupling reactions, functionalization, selective C−H functionalization substrates.
Язык: Английский
Процитировано
13
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Апрель 2, 2024
Abstract In developing an organic light-emitting diode (OLED) panel for a foldable smartphone (specifically, color filter on encapsulation) aimed at reducing power consumption, the use of new optically clear adhesive (OCA) that blocks UV light was crucial. However, incorporation UV-blocking agent within OCA presented challenge, as it restricted traditional UV-curing methods commonly used in manufacturing process. Although visible-light curing technique producing proposed, its slow speed posed barrier to commercialization. Our study introduces highly efficient photo-initiating system (PIS) rapid production OCAs utilizing visible light. We have carefully selected photocatalyst (PC) minimize electron and energy transfer agents chosen co-initiators allow faster more PC regeneration compared previously established amine-based co-initiators. This advancement enabled tenfold increase OCAs, while maintaining their essential protective, transparent, flexible properties. When applied OLED devices, this demonstrated protection, suggesting potential broader application safeguarding various smart devices.
Язык: Английский
Процитировано
13
Chemical Reviews, Год журнала: 2024, Номер unknown
Опубликована: Дек. 12, 2024
Since the seminal report by Adachi and co-workers in 2012, there has been a veritable explosion of interest design thermally activated delayed fluorescence (TADF) compounds, particularly as emitters for organic light-emitting diodes (OLEDs). With rapid advancements innovation materials design, efficiencies TADF OLEDs each primary color points well white devices now rival those state-of-the-art phosphorescent emitters. Beyond electroluminescent devices, compounds have also found increasing utility applications numerous related fields, from photocatalysis, to sensing, imaging beyond. Following our previous review 2017 (
Язык: Английский
Процитировано
12
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Июнь 17, 2024
Abstract Atom transfer radical polymerization (ATRP) with dual photoredox/copper catalysis combines the advantages of photo-ATRP and photoredox-mediated ATRP, utilizing visible light ensuring broad monomer scope solvent compatibility while minimizing side reactions. Despite its popularity, challenges include high photocatalyst (PC) loadings (10 to 1000 ppm), requiring additional purification increasing costs. In this study, we discover a PC that functions at sub-ppm level for ATRP through mechanism-driven design. Through studying mechanisms, find efficient polymerizations are driven by PCs whose ground state oxidation potential—responsible regeneration—play more important role than their excited reducing power, responsible initiation. This is verified screening varying redox potentials triplet generation capabilities. Based on these findings, identify highly PC, 4DCDP-IPN, featuring moderate power maximized potential. Employing 50 ppb, synthesize poly(methyl methacrylate) conversion, narrow molecular weight distribution, chain-end fidelity. system exhibits oxygen tolerance supports large-scale reactions under ambient conditions. Our systematic design, offer meaningful insights controlled metallaphotoredox-mediated syntheses beyond ATRP.
Язык: Английский
Процитировано
10
Current Opinion in Electrochemistry, Год журнала: 2025, Номер unknown, С. 101673 - 101673
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
1
ACS Catalysis, Год журнала: 2024, Номер 14(4), С. 2252 - 2263
Опубликована: Янв. 29, 2024
Benzo[ghi]perylene monoimides (BPIs) have recently been employed as organic photocatalysts for challenging reductions. In probing their function, we identify a thermal degradation product involving imide ring opening, and this in turn motivates the development synthesis of high-symmetry model system─a benzo[ghi]perylene diester (BPDE)─whose structural simplicity is useful mechanistic exploration relevant to broader photocatalyst class. Using electrochemical spectroscopic tools, probe both singly doubly reduced states BPDE report generation [BP-H]–, two-electron, one-proton activated closed-shell super-reductant. This catalytically active species, after visible photon absorption, operates from its singlet excited state, where motions added proton are coupled an electron transfer event, which enables direct reduction inert substrates like benzene fluorobenzene. Traditional Birch chemistry on has previously realized only by solvated electrons or electrochemistry. The function system uncovered these explorations suggests modes operation class that will enable future optimizations.
Язык: Английский
Процитировано
6
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Янв. 30, 2024
Light-driven 3D printing is gaining significant attention for its unparalleled build speed and high-resolution in additive manufacturing. However, extending vat photopolymerization to multifunctional, photoresponsive materials poses challenges, such as light attenuation interference between the photocatalysts (PCs) photoactive moieties. This study introduces novel visible-light-driven acrylic resins that enable rapid, printing. The synergistic combination of a cyanine-based PC, borate, iodonium coinitiators (HNu 254) achieves an excellent rate feature resolution under low-intensity, red exposure. incorporation hexaarylbiimidazole (HABI) crosslinkers allows spatially-resolved photoactivation upon exposure violet/blue light. Furthermore, photobleaching mechanism inhibited by HNu 254 during process results production optically-clear printed objects. Real-time Fourier transform infrared spectroscopy validates rapid HABI-containing resin, whereas mechanistic evaluations reveal underlying dynamics are responsible rate, wavelength-orthogonal photoactivation, observed phenomenon. Ultimately, this visible-light-based method demonstrates: (i) 22.5 mm h
Язык: Английский
Процитировано
6
CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2024, Номер 57, С. 171 - 183
Опубликована: Фев. 1, 2024
Язык: Английский
Процитировано
6
Organic Chemistry Frontiers, Год журнала: 2024, Номер 11(18), С. 5232 - 5277
Опубликована: Янв. 1, 2024
This review describes recent advances in the generation of aryl radicals using light and electricity. Such modern techniques allow for efficient energy resource utilization, thus providing more sustainable radical arylation methods.
Язык: Английский
Процитировано
6
Green Chemistry, Год журнала: 2024, Номер 26(11), С. 6446 - 6453
Опубликована: Янв. 1, 2024
Herein, we present a novel, hydrazine-free photoredox catalyzed platform for azine synthesis using mild, simple reaction conditions.
Язык: Английский
Процитировано
5