Journal ArticleDOI
Construction of crystalline 2D covalent organic frameworks with remarkable chemical (Acid/Base) stability via a combined reversible and irreversible route
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TLDR
Two new chemically stable [acid and base] 2D crystalline covalent organic frameworks (COFs) were synthesized using combined reversible and irreversible organic reactions and showed strong resistance toward acid and boiling water and exceptional stability in base.Abstract:
Two new chemically stable [acid and base] 2D crystalline covalent organic frameworks (COFs) (TpPa-1 and TpPa-2) were synthesized using combined reversible and irreversible organic reactions. Syntheses of these COFs were done by the Schiff base reactions of 1,3,5-triformylphloroglucinol (Tp) with p-phenylenediamine (Pa-1) and 2,5-dimethyl-p-phenylenediamine (Pa-2), respectively, in 1:1 mesitylene/dioxane. The expected enol–imine (OH) form underwent irreversible proton tautomerism, and only the keto–enamine form was observed. Because of the irreversible nature of the total reaction and the absence of an imine bond in the system, TpPa-1 and TpPa-2 showed strong resistance toward acid (9 N HCl) and boiling water. Moreover, TpPa-2 showed exceptional stability in base (9 N NaOH) as well.read more
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The atom, the molecule, and the covalent organic framework
TL;DR: The ability to design COFs and to adjust their pore metrics using the principles of reticular synthesis has given rise to frameworks with ultralow densities, which has resulted in the first implementation of the concept of molecular weaving.
Journal ArticleDOI
Covalent Organic Frameworks: Design, Synthesis, and Functions.
Keyu Geng,Ting He,Ruoyang Liu,Sasanka Dalapati,Ke Tian Tan,Zhongping Li,Shanshan Tao,Yifan Gong,Qiuhong Jiang,Donglin Jiang +9 more
TL;DR: A comprehensive review of the COF field is targeted, providing a historic overview of the chemistry, the advances in the topology design and synthetic reactions, illustrate the structural features and diversities, and scrutinize the development and potential of various functions through elucidating structure-function correlations.
Journal ArticleDOI
Covalent organic frameworks: a materials platform for structural and functional designs
TL;DR: Covalent organic frameworks (COFs) are a class of crystalline porous polymer that allows the atomically precise integration of organic units into extended structures with periodic skeletons and ordered nanopores as mentioned in this paper.
Journal ArticleDOI
Chemistry of Covalent Organic Frameworks
TL;DR: Since the organic constituents of COFs, when linked, do not undergo significant change in their overall geometry, it has been possible to predict the structures of the resulting COF, and this advantage has facilitated their characterization using powder X-ray diffraction techniques, which has allowed for the synthesis of COF structures by design and for their formation with the desired composition, pore size, and aperture.
Journal ArticleDOI
An atlas of two-dimensional materials
TL;DR: This Atlas demonstrates the large diversity of electronic properties, including band gaps and electron mobilities of atomically thin materials, as well as rare earth, semimetals, transition metal chalcogenides and halides, and finally synthetic organic 2D materials, exemplified by 2D covalent organic frameworks.
References
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Journal ArticleDOI
Porous, Crystalline, Covalent Organic Frameworks
Adrien P. Côté,Annabelle I. Benin,Nathan W. Ockwig,Michael O'Keeffe,Adam J. Matzger,Omar M. Yaghi +5 more
TL;DR: Covalent organic frameworks (COFs) have been designed and successfully synthesized by condensation reactions of phenyl diboronic acid and hexahydroxytriphenylene to form rigid porous architectures with pore sizes ranging from 7 to 27 angstroms.
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Covalent organic frameworks
TL;DR: This tutorial review describes the basic design concepts, the recent synthetic advancements and structural studies, and the frontiers of functional exploration of covalent organic frameworks.
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Storage of Hydrogen, Methane, and Carbon Dioxide in Highly Porous Covalent Organic Frameworks for Clean Energy Applications
Hiroyasu Furukawa,Omar M. Yaghi +1 more
TL;DR: Findings place COFs among the most porous and the best adsorbents for hydrogen, methane, and carbon dioxide.
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Porous, Covalent Triazine-Based Frameworks Prepared by Ionothermal Synthesis
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Construction of covalent organic framework for catalysis: Pd/COF-LZU1 in Suzuki-Miyaura coupling reaction.
TL;DR: The first application of a new COF material, COF-LZU1, for highly efficient catalysis, which possesses a two-dimensional eclipsed layered-sheet structure, making its incorporation with metal ions feasible.