Salen-Based Covalent Organic Framework

Li, Lihua; Xu, Feng; Cui, Xiao‐Hui; Ma, Yunxiang; Ding, San‐Yuan; Wang, Wei

doi:10.1021/jacs.7b01523

Cited by 269 publications

(192 citation statements)

References 73 publications

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“…[258,259] By using this molecular design approach, the high-throughput synthesis of avariety of surface functionalized COFs was possible,with some of them containing long alkyl chains or large groups that could not be synthesized by direct condensation methods.T hiol-ene [260] and inverse click reactions of COFs containing different amounts of alkyne units [261] or quantitative ring-opening esterification of hydroxy-functionalized COFs with succinic anhydride (Figure 14) have also been used for the functionalization of COFs. [262] This resulted in materials with ah igh capacity for CO 2 and allowed structure-property relationships to be investigated through systematic tuning of the pore walls.C OFs possessing open docking sites,f or example, dehydrobenzoannulene [263] or salen [264] moieties,c ould be metalated to yield hybrid materials as promising candidates for catalytic applications.S equential twofold modification of…”

Section: Functionalization and Postsynthetic Modificationmentioning

confidence: 99%

Covalent Organic Frameworks and Cage Compounds: Design and Applications of Polymeric and Discrete Organic Scaffolds

2018

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Porous organic materials are an emerging class of functional nanostructures with unprecedented properties. Dynamic covalent assembly of small organic building blocks under thermodynamic control is utilized for the intriguingly simple formation of complex molecular architectures in one-pot procedures. In this Review, we aim to analyze the basic design principles that govern the formation of either covalent organic frameworks as crystalline porous polymers or covalent organic cage compounds as shape-persistent molecular objects. Common synthetic procedures and characterization techniques will be discussed as well as more advanced strategies such as postsynthetic modification or self-sorting. When appropriate, comparisons are drawn between polymeric frameworks and discrete organic cages in terms of their underlying properties. Furthermore, we highlight the potential of these materials for applications ranging from gas storage to catalysis and organic electronics.

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Section: Functionalization and Postsynthetic Modificationmentioning

confidence: 99%

Covalent Organic Frameworks and Cage Compounds: Design and Applications of Polymeric and Discrete Organic Scaffolds

2018

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“…[73][74][75][76][77] Generally,i ncorporating nitrogen-containingm olecular units, such as amine, imine and triazine groups, within at unable COF could facilitatet ol ock metal active sites. [73][74][75][76][77] Generally,i ncorporating nitrogen-containingm olecular units, such as amine, imine and triazine groups, within at unable COF could facilitatet ol ock metal active sites.…”

Section: Organocatalysismentioning

confidence: 99%

Recent Advances in Covalent Organic Frameworks for Catalysis

Liu

Wang

2020

Chemistry An Asian Journal

121

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Covalent organic frameworks (COFs) as an emerging type of crystalline porousm aterials, have obtained considerable attention recently.T hey have exhibitedd iverse structure and attractive performance in variousc atalytic reactions. It is highly expected to have as ystematic and comprehensive review summing up COFs-derivedcatalysts in homogeneous and heterogeneous catalysis, which is favorable to the judicious design of an efficient catalystf or targeted reaction. Herein, we focus on summarizing recent and significant developments in COFs materials, with an emphasis on both the synthetic strategies andt argetedf unctionalization, and categorize it in accordance with the different types of catalytic reactions.T heir potential catalysis applications are reviewed thoroughly.M oreover,apersonal view aboutt he future developmento fC OFs catalysts with respect to the large-scale production is also discussed.[ + + ] These authors contributed equally to this work.The ORCID identification number(s) for the author(s) of this articlecan be found under: https://doi.

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“…[118] Ding, Wang et al prepared a salicylaldehyde-based monomer possessing a C 3 geometry leading to a new salenbased COF in one step after condensation with ethylenediamine. [119] Solvothermolysis occurred in an optimized mixture of solvents, of utmost importance for achieving high crystallinity and porosity. The stability of this 2D network is due to the formation of multiple hydrogen-bonds and to the π-π stacking arrangement of the aromatic rings.…”

Section: Salen Immobilized On Mofs and Cofsmentioning

confidence: 99%

Chiral Salen Complexes for Asymmetric Heterogeneous Catalysis: Recent Examples for Recycling and Cooperativity

2019

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Chiral salen complexes are privileged and versatile catalysts used in a wide variety of enantioselective transformations. Researches for their use in multicatalysis, including cooperative as well as tandem processes, are more recent, but many reports already highlight the important effect of the salen ligand structure on reaction rates and/or selectivities. This review article thus outlines the literature covering last five years, on the current developments of chiral polymetallic salen complexes used in asymmetric heterogeneous catalysis; their preparation, their efficiency as catalysts in various reactions and their recyclability are highlighted according to the immobilization procedures involved for their heterogenization. These methods include grafting on organic or inorganic supports insuring easy recovery by simple filtration. Polymerization processes are also part of recent research, leading to high densities of catalytic sites to favor their cooperativity. Combination of salen complexes via non covalent interactions or their introduction on MOFs and COFs networks is currently in full expansion, with examples of highly functionalized and enantioenriched products issued from tandem catalysis.

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Salen-Based Covalent Organic Framework

Cited by 269 publications

References 73 publications

Covalent Organic Frameworks and Cage Compounds: Design and Applications of Polymeric and Discrete Organic Scaffolds

Covalent Organic Frameworks and Cage Compounds: Design and Applications of Polymeric and Discrete Organic Scaffolds

Recent Advances in Covalent Organic Frameworks for Catalysis

Chiral Salen Complexes for Asymmetric Heterogeneous Catalysis: Recent Examples for Recycling and Cooperativity

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