Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125499 - 125499
Опубликована: Май 1, 2025
Язык: Английский
Angewandte Chemie, Год журнала: 2025, Номер unknown
Опубликована: Март 11, 2025
Abstract Traditional H 2 O photocatalysis primarily depends on photoexcited electrons and holes to drive oxygen reduction water oxidation, respectively. However, singlet ( 1 ), often underappreciated, plays a pivotal role in production. Meanwhile, photocatalytic biomass conversion has attracted attention, yet studies combining synthesis with valorization remain rare typically yield low‐value products. Herein, strategy of furfuryl alcohol (FFA) coupled the efficient co‐production is reported, enabled by covalent organic frameworks (COFs) induced, ‐participated Achmatowicz rearrangement. This study introduces polyimide‐based COF‐N 0‐3 tailored nitrogen content, representing an unprecedently platform for Remarkably, reducing content COF enhances production, significantly boosting generation rate. In FFA, primary pathway production rearrangement, achieving rate ten times higher than that reliant reaction pure water, reaching 4549 µmol g⁻¹ h⁻¹. Mechanism revealed selectively engaged bypassing hole oxidation trigger producing valuable 6‐hydroxy‐(2H)‐pyranone 99% 92% selectivity. work establishes coupling simultaneous biochemicals, offering transformative approach sustainable photocatalysis.
Язык: Английский
Процитировано
1
Journal of the American Chemical Society, Год журнала: 2024, Номер 146(30), С. 20963 - 20971
Опубликована: Июль 20, 2024
In the realm of nanoscale materials design, achieving precise control over dimensions nanotubular architectures poses a substantial challenge. our ongoing pursuit, we have successfully engineered novel class single-molecule nanotubes─isoreticular covalent organic pillars (iCOPs)─by stacking formylated macrocycles through multiple dynamic imine bonds, guided by principles reticular chemistry. Our strategic selection rigid diamine linkers has facilitated synthesis diverse array iCOPs, each retaining homologous structure yet offering distinct cavity shapes influenced linker choice. Notably, three these iCOP variants feature continuous one-dimensional channels, exhibiting length-dependent host-guest interactions with α,ω-dibromoalkanes, and presenting critical guest alkyl chain length threshold for efficient encapsulation. This newfound capability not only provides platform tailoring structures precision, but also opens new avenues innovative applications in molecular recognition purification complex mixtures.
Язык: Английский
Процитировано
6
Advanced Composites and Hybrid Materials, Год журнала: 2024, Номер 7(6)
Опубликована: Окт. 28, 2024
Язык: Английский
Процитировано
4
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Янв. 27, 2025
Electron donor–acceptor complexes are commonly employed to facilitate photoinduced radical-mediated organic reactions. However, achieving these photochemical processes with catalytic amounts of donors or acceptors can be challenging, especially when aiming reduce catalyst loadings. Herein, we have unveiled a framework-based heterogenization approach that significantly enhances the photoredox activity perylene diimide species in radical addition reactions alkyl silicates by promoting faster and more efficient electron complex formation. Besides offering broad substrate scope alkene hydroalkylation, newly developed heterogeneous photocatalysis substantially improves turnover numbers comparison previous homogeneous photocatalytic systems demonstrates outstanding recyclability. These research findings pave way for advancement various practical transformations using framework-supported organocatalysts.
Язык: Английский
Процитировано
0
Journal of Materials Chemistry B, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Sonodynamic therapy (SDT), characterized by its non-invasiveness, low toxicity, and deep tissue penetration, has emerged as a promising therapeutic modality for anticancer treatments. Recently, covalent organic frameworks (COFs) have garnered significant attention in the SDT realm powerful versatile toolbox. Notably, COF-based achieved many encouraging outcomes owing to remarkable potential of COFs, volume related research experienced continuous growth. Therefore, we strive provide timely comprehensive review that thoroughly summarizes advancements SDT. This begins with concise yet summary ultrasonic cavitation sonodynamic effects, elucidating fundamental principles mechanisms Subsequently, it delves into chemistry examining intricate structure designs, various types linkages, diverse synthetic methods. The primary focus this is summarize sonosensitizers, including construction strategies product properties. More importantly, role COFs combined therapies described detail, aiming highlight advantages COF-enhanced synergistic Finally, points out current challenges future opportunities rapidly evolving field. Overall, deliberations overviews sonosensitizers are expected facilitate advancements, leading early-stage clinical benefits patients.
Язык: Английский
Процитировано
0
Biosensors and Bioelectronics, Год журнала: 2025, Номер 276, С. 117244 - 117244
Опубликована: Фев. 8, 2025
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 12, 2025
Abstract Imide covalent organic frameworks (COFs) are considered promising materials in various fields due to their exceptional stability, large surface area, and high porosity. However, current synthesis methods of imide COFs typically involve complex vacuum operations, amounts solvents, long reaction times at temperatures, limiting scalability for industrial production. Herein, a facile self‐accelerated strategy is developed rapid, low‐cost, large‐scale eight (SACOFs) under solvent‐free, vacuum‐free, low‐temperature conditions. Mechanistic studies reveal that the driven by self‐generated water atmospheric conditions, which accelerates reversible self‐healing disordered polymers, ultimately leading rapid highly crystalline COFs. Notably, only additive required besides COF monomers o ‐substituted benzoic acid, small amount grafted onto COFs, enabling straightforward functionalization. Thiol‐functionalized SACOFs synthesized as supports anchoring Pd nanoparticles. The as‐prepared Pd@SACOFs exhibit activity selectivity hydrogenation substituted nitrobenzene modulation thiol groups. synthetic enables production potentially paving way transition from laboratory research commercial applications.
Язык: Английский
Процитировано
0
Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown
Опубликована: Март 11, 2025
Abstract Traditional H 2 O photocatalysis primarily depends on photoexcited electrons and holes to drive oxygen reduction water oxidation, respectively. However, singlet ( 1 ), often underappreciated, plays a pivotal role in production. Meanwhile, photocatalytic biomass conversion has attracted attention, yet studies combining synthesis with valorization remain rare typically yield low‐value products. Herein, strategy of furfuryl alcohol (FFA) coupled the efficient co‐production is reported, enabled by covalent organic frameworks (COFs) induced, ‐participated Achmatowicz rearrangement. This study introduces polyimide‐based COF‐N 0‐3 tailored nitrogen content, representing an unprecedently platform for Remarkably, reducing content COF enhances production, significantly boosting generation rate. In FFA, primary pathway production rearrangement, achieving rate ten times higher than that reliant reaction pure water, reaching 4549 µmol g⁻¹ h⁻¹. Mechanism revealed selectively engaged bypassing hole oxidation trigger producing valuable 6‐hydroxy‐(2H)‐pyranone 99% 92% selectivity. work establishes coupling simultaneous biochemicals, offering transformative approach sustainable photocatalysis.
Язык: Английский
Процитировано
0
Chem Catalysis, Год журнала: 2025, Номер unknown, С. 101325 - 101325
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Апрель 1, 2025
Abstract The nanoscale morphologies of COFs deeply affect their performance in practical applications. However, it still lacks studies to well understand formation mechanism for guiding and controlling the synthesis desired nanomorphology. To achieve more mechanistic insights into nanofibrous COFs, herein a series non‐fibrous are synthesized intrinsic relationships among morphology, chemical constituent, structure planarity, DFT calculated interlayer stacking energy investigated comprehensively. study reveals planarity building monomers is not decisive forming COFs. presence electron‐withdrawing triazine group amine electron‐donating ─OH aldehyde essential suppressing growth COF crystallites x‐y plane promoting z ‐direction form morphology can be modulated by functional groups regulating competition between lateral reaction activity energy. prepared exhibited two‐fold increased catalytic better stability than counterpart hydrodechlorination. new proposed here help open up domain precise designing modulating nanomorphology from molecular level specific application.
Язык: Английский
Процитировано
0