Undulated 2D Covalent Organic Frameworks Based on Bowl‐Shaped Cyclotricatechylene

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

doi:10.1002/cjoc.201600216

Cited by 14 publications

(14 citation statements)

References 39 publications

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“…The [ C 2 + C 2 ] diagram yields the boronate-ester-linked TPE-Ph COF and the imine-linked COF-TPA (4PE-1P COF), COF-BPDA (4PE-2P COF), COF-TPDA (4PE-3P COF), SIOC-COF-1, and SIOC-COF-2. ,,, COF-BTA-DAB and COF-BTA-BA using [1,1′-biphenyl]-3,3′,5,5′-tetracarbaldehyde (BTA) knots also achieve kagome topology . The [ C 3 + C 2 ] topology diagram using C 3 -symmetric macrocycles can also yield kagome-type COFs, including the boronic-ester-linked Star-COF-1, Star-COF-2, Star-COF-3, CTC-COF, CTC-COF-2, CTC-COF-3, DBA-COF 1 (= AEM-COF-1), DBA-COF 2, AEM-COF-2, Py-DBA-COF 1, Py-DBA-COF 2, and Py-MV-DBA-COF. ,,− …”

Section: Building Blocks and Structural Diversitymentioning

confidence: 99%

Covalent Organic Frameworks: Design, Synthesis, and Functions

et al. 2020

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Covalent organic frameworks (COFs) are a class of crystalline porous organic polymers with permanent porosity and highly ordered structures. Unlike other polymers, a significant feature of COFs is that they are structurally predesignable, synthetically controllable, and functionally manageable. In principle, the topological design diagram offers geometric guidance for the structural tiling of extended porous polygons, and the polycondensation reactions provide synthetic ways to construct the predesigned primary and high-order structures. Progress over the past decade in the chemistry of these two aspects undoubtedly established the base of the COF field. By virtue of the availability of organic units and the diversity of topologies and linkages, COFs have emerged as a new field of organic materials that offer a powerful molecular platform for complex structural design and tailor-made functional development. Here we target a comprehensive review of the COF field, provide a historic overview of the chemistry of the COF field, survey the advances in the topology design and synthetic reactions, illustrate the structural features and diversities, scrutinize the development and potential of various functions through elucidating structure−function correlations based on interactions with photons, electrons, holes, spins, ions, and molecules, discuss the key fundamental and challenging issues that need to be addressed, and predict the future directions from chemistry, physics, and materials perspectives.

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Section: Building Blocks and Structural Diversitymentioning

confidence: 99%

Covalent Organic Frameworks: Design, Synthesis, and Functions

et al. 2020

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“…[ 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. [ 34 ] This CTC‐based PIM has a surface area of 800 m 2 g –1 with predominant ultra‐micropores within the network.…”

Section: Separationmentioning

confidence: 99%

“…[32] They have been successfully incorporated into the network of COFs, PIMs, and CMPs, which give a better hydrogen (H 2 ) gas uptake capacity. [33][34][35] 2. 1.7.…”

Section: Cyclotriveratrylenementioning

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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“…The H 2 storage capacity of JUC-588 was 245 cm 3 g -1 (or 2.19 wt%) at 77 K and 138 cm 3 g -1 (or 1.23 wt%) at 87 K respectively, which is lower than that of JUC-596 with functional triptycene groups with high fractional free volume and numerous available sites (305 cm 3 g -1 or 2.72 wt% at 77 K); 41 however, it exceeded JUC-589 (211 cm 3 g -1 or 1.89 wt% at 77 K and 129 cm 3 g -1 or 1.15 wt% at 87 K) and most of porous materials under approximate test conditions, such as PAF-1 (179 cm 3 /g or 1.60 wt%), 49 MOF-177 (139 cm 3 /g or 1.25 wt%), 50 and CTC-COF (125 cm 3 /g or 1.12 wt%). 51 Based on the above results, the isosteric heats of adsorption (Q st ) for H 2 were calculated to be 4.12 kJ/mol for JUC-588 and 6.54 kJ/mol for JUC-589, respectively (Figs. S17 and S18, ESI †).…”

Section: Resultsmentioning

confidence: 99%