Expeditious synthesis of covalent organic frameworks: a review

Li, Xinle; Yang, Chen; Sun, Bing; Cai, Song‐Liang; Chen, Ziman; Lv, Yongqin; Zhang, Jian; Liu, Yi

doi:10.1039/d0ta05894g

Cited by 139 publications

(82 citation statements)

References 112 publications

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“…Considering that the four amine groups of 1 lie along the same plane, we rationalised that a condensation with a linear molecule such as terephthaldehyde (PDA) may give rise to a 2D network if a suitable level of reversibility is achieved( Lin et al, 2015 ). Common reaction conditions used in the synthesis of covalent-organic frameworks (COFs) typically utilise high temperatures and employ acetic acid as the catalyst ( Li et al, 2020 ). These conditions, however, are not compatible with the labile Cu 2 -carboxylate bonds that comprise the Cu 4 L 4 MOC.…”

Section: Resultsmentioning

confidence: 99%

Assembly and Covalent Cross-Linking of an Amine-Functionalised Metal-Organic Cage

et al. 2021

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The incorporation of reactive functional groups onto the exterior of metal-organic cages (MOCs) opens up new opportunities to link their well-defined scaffolds into functional porous solids. Amine moieties offer access to a rich catalogue of covalent chemistry; however, they also tend to coordinate undesirably and interfere with MOC formation, particular in the case of Cu2 paddlewheel-based MOCs. We demonstrate that tuning the basicity of an aniline-functionalized ligand enables the self-assembly of a soluble, amine-functionalized Cu4L4 lantern cage (1). Importantly, we show control over the coordinative propensity of the exterior amine of the ligand, which enables us to isolate a crystalline, two-dimensional metal-organic framework composed entirely of MOC units (2). Furthermore, we show that the nucleophilicity of the exterior amine of 1 can be accessed in solution to generate a cross-linked cage polymer (3) via imine condensation.

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Section: Resultsmentioning

confidence: 99%

Assembly and Covalent Cross-Linking of an Amine-Functionalised Metal-Organic Cage

et al. 2021

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“…Microwave-and ultrasound-assisted synthesis methods is reliable ways to obtain framework materials with high crystallinity and specific surface area within several hours or even minutes. 43,44 Additionally, new energy sources, solvents and catalysts for synthesizing highquality MOFs/COFs have been explored. 45,46 The intrinsic structure of MOF/COF is fundamentally dependent on the coordination mode of metal nodes 36 and the number of reaction sites of organic ligands.…”

Section: Basic Properties Of Mofs/ Cofs and Derivativesmentioning

confidence: 99%

Metal/covalent‐organic frameworks for electrochemical energy storage applications

Chu

Wang

Zhong³

et al. 2021

EcoMat

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Many renewable energy technologies, especially batteries and supercapacitors, require effective electrode materials for energy storage and conversion. For such applications, metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs) have been recently emerged as promising candidates.Their high surface area, organized channel, and multiple functions make them highly versatile and flexible as electrodes, electrolytes, and electrocatalysts in electrochemical energy storage (EES) systems. In addition, many MOFs/COFsderived materials tend to possess high conductivity and diverse nanoarchitecture, and can also serve as high-performance electrodes. In this review, we summarize the extensive potentials of both frameworks and their derivatives in a range of devices, including lithium/sodium ion, lithium-sulfur, lithium-oxygen batteries, and supercapacitors. In addition, we discuss the remaining challenges in this area and propose potential solutions for them as well as outline a few possible directions for further development for EES applications.

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“…Perhaps covalent organic frameworks (COFs) are one of the newest families of porous materials [ 50 ]. COFs represent an emerging class of crystalline solids entirely composed of light elements and connected by covalent bonds in two and three dimensions ( Figure 4 a).…”

Section: The Relevance Of the Supportmentioning

confidence: 99%

Cyclodextrins as a Key Piece in Nanostructured Materials: Quantitation and Remediation of Pollutants

et al. 2020

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Separation and pre-concentration of trace pollutants from their matrix by reversible formation of inclusion complexes has turned into a widely studied field, especially for the benefits provided to different areas. Cyclodextrins are non-toxic oligosaccharides that are well known for their host–guest chemistry, low prices, and negligible environmental impact. Therefore, they have been widely used as chiral selectors and delivery systems in the pharmaceutical and food industry over time. However, their use for extraction purposes is hampered by their high solubility in water. This difficulty is being overcome with a variety of investigations in materials science. The setting-up of novel solid sorbents with improved properties thanks to the presence of cyclodextrins at their structure is still an open research area. Some properties they can offer, such as an increased selectivity or a good distribution along the surface of a solid support, which provides better accessibility for guest molecules, are characteristics of great interest. This systematic review reports the most significant uses of cyclodextrins for the adsorption of pollutants in different-origin samples based on the works reported in the literature in the last years. The study has been carried out indistinctly for quantitation and remediation purposes.

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Expeditious synthesis of covalent organic frameworks: a review

Abstract:
Covalent organic frameworks (COFs), a burgeoning class of crystalline porous materials constructed by covalently connecting organic building blocks, have garnered tremendous attention. The predominant solvothermal synthesis of COFs usually requires...

Cited by 139 publications

References 112 publications

Assembly and Covalent Cross-Linking of an Amine-Functionalised Metal-Organic Cage

Assembly and Covalent Cross-Linking of an Amine-Functionalised Metal-Organic Cage

Metal/covalent‐organic frameworks for electrochemical energy storage applications

Cyclodextrins as a Key Piece in Nanostructured Materials: Quantitation and Remediation of Pollutants

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Expeditious synthesis of covalent organic frameworks: a review

Abstract: Covalent organic frameworks (COFs), a burgeoning class of crystalline porous materials constructed by covalently connecting organic building blocks, have garnered tremendous attention. The predominant solvothermal synthesis of COFs usually requires...

Cited by 139 publications

References 112 publications

Assembly and Covalent Cross-Linking of an Amine-Functionalised Metal-Organic Cage

Assembly and Covalent Cross-Linking of an Amine-Functionalised Metal-Organic Cage

Metal/covalent‐organic frameworks for electrochemical energy storage applications

Cyclodextrins as a Key Piece in Nanostructured Materials: Quantitation and Remediation of Pollutants

Contact Info

Product

Resources

About

Abstract:
Covalent organic frameworks (COFs), a burgeoning class of crystalline porous materials constructed by covalently connecting organic building blocks, have garnered tremendous attention. The predominant solvothermal synthesis of COFs usually requires...