Results 41 to 50 of about 41,830 (293)

Asymmetric Organocatalysis with Chiral Covalent Organic Frameworks

open access: yesOrganic 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
doaj   +1 more source

Properties of Metal-Doped Covalent Organic Frameworks and Their Interactions with Sulfur Dioxide

open access: yesJournal 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
doaj   +1 more source

Exploring the flexibility of MIL-47(V)-type materials using force field molecular dynamics simulations [PDF]

open access: yes, 2016
The flexibility of three MIL-47(V)-type materials (MIL-47, COMOC-2, and COMOC-3) has been explored by constructing the pressure versus volume and free energy versus volume profiles at various temperatures ranging from 100 to 400 K This is done with first-
Rogge, Sven   +4 more
core   +2 more sources

Urea-Linked Covalent Organic Frameworks [PDF]

open access: yesJournal 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
openaire   +3 more sources

A Perspective on the Synthesis, Purification, and Characterization of Porous Organic Cages [PDF]

open access: yes, 2016
[Image: see text] Porous organic cages present many opportunities in functional materials chemistry, but the synthetic challenges for these molecular solids are somewhat different from those faced in the areas of metal–organic frameworks, covalent ...
Briggs, Michael E, Cooper, Andrew I
core   +1 more source

Facilitating nitrogen accessibility to boron-rich covalent organic frameworks via electrochemical excitation for efficient nitrogen fixation

open access: yesNature 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
doaj   +1 more source

Directed Molecular Stacking for Engineered Fluorescent Three-Dimensional Reduced Graphene Oxide and Coronene Frameworks [PDF]

open access: yes, 2019
[EN] Three‐dimensional fluorescent graphene frameworks with controlled porous morphologies are of significant importance for practical applications reliant on controlled structural and electronic properties, such as organic electronics and photochemistry.
Botchway, S. W   +9 more
core   +1 more source

Covalent Organic Frameworks—Organic Chemistry Beyond the Molecule

open access: yesMolecules, 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
doaj   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Covalent organic frameworks [PDF]

open access: yes, 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
core  

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