Preparation of a series of aCTV-based covalent organic frameworks and substituent effects on their properties

Zhen, Jingru; Ding, San‐Yuan; Liu, Jun‐Min; Huang, Zhi‐Tang; Wang, Wei; Zheng, Qiang

doi:10.1039/c5ce02332g

Cited by 12 publications

(7 citation statements)

References 46 publications

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“…[ 90 ] It was found that the introduction of methoxy and hydroxyl groups into the well‐defined frameworks can make positive efforts toward H 2 adsorption. [ 91 ] Moreover, borate‐linked COFs were derived from CTC and 4,4′‐biphenyldiboronic acid or pyrenediboronic acid. [ 33 ] McKeown and co‐workers incorporated CTC into the network of PIM by the S N Ar reaction between CTV and TFN.…”

Section: Separationmentioning

confidence: 99%

“…Afterward, the same group further explored other types of CTV-based crystalline COFs, including imine-linked COFs and borate-linked COFs. [33,90,91] Iminelinked COFs could be synthesized from triformyl-CTV and aromatic amines, or the condensation of amino-CTV and aromatic aldehydes. Compared with amorphous POPs, crystalline CTC-based COFs have a higher H 2 uptake capacity of 1.3 wt% at 823 mm Hg and 1.23 wt% at 760 mm Hg.…”

Section: H 2 Storagementioning

confidence: 99%

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Macrocycle‐Based Porous Organic Polymers for Separation, Sensing, and Catalysis

2021

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With the rapid development of materials science, porous organic polymers (POPs) have received remarkable attentions because of their unique properties such as the exceptionally high surface area and flexible molecular design. The ability to incorporate specific functions in a precise manner makes POPs promising platforms for a myriad of applications in molecular adsorption, separation, and catalysis. Therefore, many different types of POPs have been rationally designed and synthesized to expand the scope of advanced materials, endowing them with distinct structures and properties. Recently, supramolecular macrocycles with excellent host–guest complexation abilities are emerging as powerful crosslinkers for developing novel POPs with hierarchical structures and improved performance, which can be well‐organized at different spatial scales. Macrocycle‐based POPs could have unusual porous, adsorptive, and optical properties when compared to their nonmacrocycle‐incorporated counterparts. This cooperation provides valuable insights for the molecular‐level understanding of skeletal complexity and diversity. Here, the research advances of macrocycle‐based POPs are aptly summarized by showing their syntheses, properties, and applications in terms of separation, sensing, and catalysis. Finally, the current challenging issues in this exciting research field are delineated and a comprehensive outlook is offered for their future directions.

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Section: Separationmentioning

confidence: 99%

Section: H 2 Storagementioning

confidence: 99%

Macrocycle‐Based Porous Organic Polymers for Separation, Sensing, and Catalysis

2021

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“…Commonly, the topology design is realized by use of planar and tetrahedral units as knots to connect with appropriate linkers to form 2D and 3D COFs, respectively. So far the building units are limited to multisubstituted arenes and few macrocyclic skeletons. − Meanwhile, discrete organic cages possessing intrinsic cavity and porosity have received great interests in past decades . The use of such cages as building units to construct extended networks, the cage-to-framework strategy, is particularly appealing.…”

mentioning

confidence: 99%

Cage Based Crystalline Covalent Organic Frameworks

Chen

et al. 2019

J. Am. Chem. Soc.

104

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The first two cage based crystalline covalent organic frameworks, cage-COF-1 and cage-COF-2, were constructed from a prism-like three-aldehyde-containing molecular cage. The cage contains two horizontal phloroglucinol and three vertical triazine moieties forming three identical V-shaped cavities. By reacting with p-phenylenediamine and 4,4′-biphenyldiamine, the two cage-COFs were formed with a hexagonal skeleton and possess a unique structure. Due to the pillared cage nodes, the linkers are hanging with their π-surfaces but not C–H sites exposed to the pore, and enjoy certain rotational dynamics as suggested by 13C CP/MAS NMR. The antidirection of the diimine linkages leads to rippled layers which pack in unique ABC mode through alternate stacking of the cage twosided faces in both AB and AC layers. Such packing forms trigonal channels along c axis which are interconnected in ab plane due to the large open space created across the hanging linkers, resembling the porous characteristics of 3D COFs. The cage-COFs have a permanent porosity and can adsorb CO2 facilitated by the intrinsic cage cavities that serve as prime adsorption sites. The unprecedented cage-COFs not only merge the borderline of 2D and 3D COFs but also bridge porous organic cages to extended crystalline organic frameworks.

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“…The high crystallinity was attributed to the ability of the bowls to stack in the 2D COF. CTVs have also been introduced in imine‐linked COFs from the triformyl–CTV [ 26 ] and triamine–CTV [ 27 ] derivatives, leading to COFs with moderate crystallinity.…”

Section: Shape‐persistent Monomersmentioning

confidence: 99%

Structural Approaches to Control Interlayer Interactions in 2D Covalent Organic Frameworks

Martínez‐Abadía

Mateo‐Alonso

2020

Advanced Materials

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• 2D COFs are porous. Piling-up holey 2D polymers in a periodic fashion gives rise to porous channels, whose structure will depend on both the lattice and the packing. The ability to design and synthesize monomers can affect fundamental aspects in 2D covalent organic frameworks, such as dimensionality, topology, and pore size. Besides this, the structure of the monomers can also affect interlayer interactions, which provide an additional means to influence crystallinity, layer arrangement, interlayer distances, and exfoliability. Herein, some of the effects that the structure of monomers can have on the interlayer interactions in 2D covalent organic frameworks and related materials are illustrated.

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Preparation of a series of aCTV-based covalent organic frameworks and substituent effects on their properties

Cited by 12 publications

References 46 publications

Macrocycle‐Based Porous Organic Polymers for Separation, Sensing, and Catalysis

Macrocycle‐Based Porous Organic Polymers for Separation, Sensing, and Catalysis

Cage Based Crystalline Covalent Organic Frameworks

Structural Approaches to Control Interlayer Interactions in 2D Covalent Organic Frameworks

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