Coordination-templated construction of single-crystal covalent organic frameworks DOI
Wenqiang Zhang, Yuting Zhang, Weili Ma

et al.

Chem, Journal Year: 2025, Volume and Issue: unknown, P. 102398 - 102398

Published: Feb. 1, 2025

Language: Английский

Ultrahigh–surface area covalent organic frameworks for methane adsorption DOI

Ying Yin,

Ya Zhang,

Xu Zhou

et al.

Science, Journal Year: 2024, Volume and Issue: 386(6722), P. 693 - 696

Published: Nov. 7, 2024

Developing porous materials with ultrahigh surface areas for gas storage (for example, methane) is attractive but challenging. Here, we report two isostructural three-dimensional covalent organic frameworks (COFs) a rare self-catenated

Language: Английский

Citations

38

Structure Evolution of 2D Covalent Organic Frameworks Unveiled by Single-Crystal X-ray Diffraction DOI
Lezhi Yi, Yijun Gao,

Shuming Luo

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 19643 - 19648

Published: July 11, 2024

We report 9 crystal structures of a two-dimensional (2D) covalent organic framework (COF), including the parent Py-1P, 5 derivatives formed by chemical reactions, and 3 dynamic states solvent exchange/loss. Structure details these porous crystals, stacking mode, interlayer distance, pore aperture, incline angle, before, during, after conversion processes in solution, were unveiled single-crystal X-ray diffraction with resolutions up to 0.85 Å. The structure evolution is triggered stepwise conformational transformation molecular building blocks 2D COF, while their long-range ordering remained unsacrificed.

Language: Английский

Citations

24

The Importance and Discovery of Highly Connected Covalent Organic Framework Net Topologies DOI
Tsukasa Irie, Saikat Das, Qianrong Fang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Furthering the field of synthetic organic chemistry from discrete molecules regime to extended structure regime, covalent frameworks (COFs) represent a new genre crystalline porous materials featuring designability with molecular-level precision, well-defined porosity, and exceptional stability imparted by robust linkages reticulating molecules. The topology COFs is principal feature that regulates their functionality usability for emerging technologies. Profound comprehension network topologies maneuvering them toward targeted applications are crucial advancing realm COF research developing novel functional exciting breakthroughs. In this Perspective, we discuss recent pursuits contributing discovery highly connected nets having topologies, assess key challenges achieving such offer insights into current scenario future directions.

Language: Английский

Citations

6

Crystalline porous frameworks based on double extension of metal–organic and covalent organic linkages DOI Creative Commons
Kenichi Endo, Stefano Canossa, Fabian Heck

et al.

Nature Synthesis, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Language: Английский

Citations

5

An Ultra-stable Sodium Dual-ion Battery Based on S/Se Co-doped Covalent Organic Framework Anode with 12,000 Cycles Under Lean Electrolyte DOI

Hongzheng Wu,

Shenghao Luo,

Hubing Wang

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104052 - 104052

Published: Jan. 1, 2025

Language: Английский

Citations

5

Synthesis of single-crystalline sp2-carbon-linked covalent organic frameworks through imine-to-olefin transformation DOI
Shengxu Li, Shunqi Xu, En Lin

et al.

Nature Chemistry, Journal Year: 2025, Volume and Issue: 17(2), P. 226 - 232

Published: Jan. 6, 2025

Language: Английский

Citations

4

Covalent Organic Framework Membranes with Patterned High-Density Through-Pores for Ultrafast Molecular Sieving DOI
Li Cao, Cailing Chen, Shuhao An

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(31), P. 21989 - 21998

Published: July 26, 2024

The creation of uniformly molecular-sized through-pores within polymeric membranes and the direct evidence these pores are essential for fundamentally understanding transport mechanism improving separation efficiency. Herein, we report an electric-field-assisted interface synthesis approach to fabricating large-area covalent organic framework (COF) that consist preferentially oriented single-crystalline COF domains. These frameworks were translated into high-density, vertically aligned across entire membrane, enabling visualization membrane with ultrahigh resolution 2 Å using low-dose high-resolution transmission electron microscopy technique (HRTEM). density directly visualized was quantified be 1.2 × 10

Language: Английский

Citations

18

Single-Crystalline 3D Covalent Organic Frameworks with Exceptionally High Specific Surface Areas and Gas Storage Capacities DOI
Baoqiu Yu,

Yu Tao,

Xuan Yao

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(42), P. 28932 - 28940

Published: Oct. 11, 2024

Single-crystalline covalent organic frameworks (COFs) are highly desirable toward understanding their pore chemistry and functions. Herein, two 50–100 μm single-crystalline three-dimensional (3D) COFs, TAM-TFPB-COF TAPB-TFS-COF, were prepared from the condensation of 4,4′,4″,4‴-methanetetrayltetraaniline (TAM) with 3,3′,5,5′-tetrakis(4-formylphenyl)bimesityl (TFPB) 3,3′,5,5′-tetrakis(4-aminophenyl)bimesityl (TAPB) 4,4′,4″,4‴-silanetetrayltetrabenzaldehyde (TFS), respectively, in 1,4-dioxane under catalysis acetic acid. Single-crystal 3D electron diffraction reveals triply interpenetrated dia-b networks atom resolution, while isostructure TAPB-TFS-COF was disclosed by synchrotron single-crystal X-ray powder Le Bail refinements. The nitrogen sorption measurements at 77 K disclose microporosity nature both activated COFs exceptionally high Brunauer–Emmett–Teller surface areas 3533 4107 m2 g–1, representing thus far record specific area among imine-bonded COFs. This enables to exhibit also methane uptake capacities up 28.9 wt % (570 cm3 g–1) 25 °C 200 bar all reported far. work not only presents structures exceptional but provides an example engineering adjust permanent microporous for storage.

Language: Английский

Citations

18

Solvothermal Shaping of Imine‐Linked Covalent Organic Frameworks by a Two‐Step Solvent Feeding Process DOI

Yajiao Su,

Molin Qin,

Jinglin Kong

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(33)

Published: April 1, 2024

Abstract Solvothermal synthesis is the predominant method for creating new structured covalent organic frameworks (COFs), yet it grapples with challenges in controlling shape and morphology. This issue attributed to unregulated solvent‐feeding process, which results rapid polymerization uncontrolled phase separation. Consequently, a two‐step process reported solvothermal shaping of imine‐linked COF monoliths hierarchical porosity. The conditions powders existing literature are directly utilized without extensive optimization; however, solvents divided into two segments prior feeding. A minor segment employed dissolve monomers, polymerize situ form amorphous monoliths. Subsequently, remaining solvent, along an acetic acid aqueous solution, added crystallization. versatility this feeding producing illustrated. high‐quality demonstrate benzene uptakes ranging from 6.0 16.8 mmol g −1 at 298 K. study confirms that solvent can be effectively integrated conventional enhance solution‐processability COFs. It anticipated modified approach readily COFs meet practical application requirements.

Language: Английский

Citations

14

Reticular Materials for Photocatalysis DOI
Kang Sun, Yunyang Qian, Dandan Li

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract Photocatalysis leverages solar energy to overcome the thermodynamic barrier, enabling efficient chemical reactions under mild conditions. It can greatly reduce reliance on traditional sources and has attracted significant research interest. Reticular materials, including metal‐organic frameworks (MOFs) covalent organic (COFs), represent a class of crystalline materials constructed from molecular building blocks linked by coordination bonds, respectively. function as heterogeneous catalysts, combining well‐defined structures high tailorability akin homogeneous catalysts. In this review, regulation light absorption, charge separation, surface in photocatalytic process through precise molecular‐level design based features reticular is elaborated. Notably, for MOFsmicroenvironment modulation around catalytic sites affects performance delved, with emphasis their unique dynamic flexible microenvironments. For COFs, inherent excitonic effects due fully nature discussed highlight strategies regulate charge‐ and/or energy‐transfer‐mediated photocatalysis. Finally, current challenges future directions field, aiming provide comprehensive understanding how be optimized enhanced photocatalysis discussed.

Language: Английский

Citations

11