Unprecedented POSS‐Linked 3D Covalent Organic Frameworks with 2‐Fold Interpenetrated scu or sqc Topology Regulated by Porphyrin Center for Photocatalytic CO₂ Reduction

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(26)

Опубликована: Апрель 15, 2024

Abstract The synthesis and characterization of porphyrin center regulated three‐dimensional covalent organic frameworks (COFs) with 2‐fold interpenetrated scu or sqc topology have been investigated. These COFs exhibit unique structural features properties, making them promising candidates for photocatalytic applications in CO 2 reduction artemisinin synthesis. serves as an anchor metal ions, allowing precise control over structures functions the frameworks. Furthermore, coordination within framework imparts desirable catalytic enabling their potential use reactions. Overall, these metal‐controlled offer exciting opportunities development advanced materials tailored functionalities.

Язык: Английский

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Vinylene‐linked Donor‐π‐Acceptor Metal‐Covalent Organic Framework for Enhanced Photocatalytic CO2 Reduction

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(48)

Опубликована: Сен. 3, 2024

Abstract Intramolecular charge separation driving force and linkage chemistry between building blocks are critical factors for enhancing the photocatalytic performance of metal‐covalent organic framework (MCOF) based photocatalyst. However, robust achieving both simultaneously has yet to be challenging despite ongoing efforts. Here we develop a fully π‐conjugated vinylene‐linked multivariate donor‐π‐acceptor MCOF (D‐π‐A, termed UJN‐1) by integrating benzyl cyanides linker with multiple functional electron‐rich triphenylamine electron‐deficient copper‐cyclic trinuclear units (Cu‐CTUs) moieties, featuring strong intramolecular force, extended conjugation degree skeleton, abundant active sites. The incorporation Cu‐CTUs acceptor electron‐withdrawing ability concomitantly giant can efficiently accelerate photogenerated electrons transfer from Cu‐CTUs, revealing experiments theoretical calculations. Benefiting synergistically effect D‐π‐A configuration vinylene linkage, highly‐efficient spatial is achieved. Consequently, UJN‐1 exhibits an excellent CO formation rate 114.8 μmol g −1 in 4 h without any co‐catalysts or sacrificial reagents under visible light, outperforming those analogous MCOFs imine‐linked (UJN‐2, 28.9 ) COF Cu‐CTU sites (UJN‐3, 50.0 ), emphasizing role designing novel COFs‐based

Язык: Английский

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Progress of Covalent Organic Framework Photocatalysts: From Crystallinity–Stability Dilemma to Photocatalytic Performance Improvement

ACS Catalysis, Год журнала: 2024, Номер 14(15), С. 11675 - 11704

Опубликована: Июль 22, 2024

Язык: Английский

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Two-Dimensional Covalent Organic Frameworks with Pentagonal Pores

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(29), С. 19680 - 19685

Опубликована: Июль 9, 2024

The pore shapes of two-dimensional covalent organic frameworks (2D COFs) significantly limit their practical applications in separation and catalysis. Although various 2D COFs with polygonal pores have been well developed, constructing pentagonal remains an enormous challenge. In this work, we developed one kind the

Язык: Английский

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Pyridine-nitrogen conjugated covalent organic frameworks for high-efficiency gas-solid photocatalytic reduction of CO2 to CO

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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