Results 31 to 40 of about 41,033 (277)
Asymmetric Organocatalysis with Chiral Covalent Organic Frameworks
Organic Materials, 2021 Inspired by Mother Nature, the use of chiral covalent organic frameworks as heterogeneous asymmetric organocatalysts has arisen over the last decade as a new method in enantioselective synthesis.
Song-Chen Yu, Liang Cheng, Li Liu
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Chiral induction in covalent organic frameworks
Nature Communications, 2018 Controlling chirality and function in metal organic frameworks has been an achievement, but very difficult to carry out in covalent organic frameworks. Here the authors show chiral covalent organic frameworks that are crystallized from achiral precursors
Xing Han +6 more
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Properties of Metal-Doped Covalent Organic Frameworks and Their Interactions with Sulfur Dioxide
Journal of Chemistry, 2018 Covalent organic frameworks are unique for their highly open architecture and attractive for use as promising gas adsorption and storage carriers. In this work, density functional theory calculations have been performed to investigate the properties of ...
Ju Wang +4 more
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Two-dimensional sp2 carbon–conjugated covalent organic frameworks [PDF]
, 2017 We synthesized a two-dimensional (2D) crystalline covalent organic framework (sp2c-COF) that was designed to be fully π-conjugated and constructed from all sp2-carbons by C=C condensation reactions of tetrakis(4-formylphenyl)pyrene and 1,4 ...
Addicoat, Matthew A +11 more
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Three-Dimensional Phthalocyanine Metal-Catecholates for High Electrochemical Carbon Dioxide Reduction. [PDF]
, 2019 The synthesis of a new anionic 3D metal-catecholate framework, termed MOF-1992, is achieved by linking tetratopic cobalt phthalocyanin-2,3,9,10,16,17,23,24-octaol linkers with Fe3(-C2O2-)6(OH2)2 trimers into an extended framework of roc topology.
Diercks, Christian S +10 more
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Urea-Linked Covalent Organic Frameworks [PDF]
Journal of the American Chemical Society, 2018 2D covalent organic frameworks (COFs) with flexible urea linkages have been synthesized by condensation of 1,3,5-triformylphloroglucinol (TFP) with 1,4-phenylenediurea (BDU) or 1,1'-(3,3'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)diurea (DMBDU). The resulting COF-117 and COF-118 undergo reversible structural dynamics within their layers, in response to ...
Chenfei Zhao +5 more
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Nature Communications, 2019 Covalent organic frameworks are potential catalysts for nitrogen reduction, but limited nitrogen transport restricts the utilization ratio of active sites.
Sisi Liu +5 more
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Covalent Organic Frameworks—Organic Chemistry Beyond the Molecule
Molecules, 2017 The synthesis of organic molecules has at its core, purity, definitiveness of structure, and the ability to access specific atoms through chemical reactions.
Christian S. Diercks +2 more
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Molecular Iodine Capture by Covalent Organic Frameworks
Molecules, 2022 The effective capture and storage of volatile molecular iodine from nuclear waste is of great significance. Covalent organic frameworks (COFs) are a class of extended crystalline porous polymers that possess unique architectures with high surface areas ...
Yuting Yang +5 more
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Covalent organic frameworks [PDF]
, 2007 The first members of covalent organic frameworks (COF) have been designed and successfully synthesized by condensation reactions of phenyl diboronic acid C6H4[B(OH)2]2 and hexahydroxytriphenylene C18H6(OH)6.
Côté, Adrien P. +4 more
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