Journal ArticleDOI
3D Microporous Base‐Functionalized Covalent Organic Frameworks for Size‐Selective Catalysis
TLDR
Porous functionalized 3D COFs could be a promising new class of shape-selective catalysts in base-catalyzed Knoevenagel condensation reactions, according to their remarkable conversion and high size selectivity.Abstract:
The design and synthesis of 3D covalent organic frameworks (COFs) have been considered a challenge, and the demonstrated applications of 3D COFs have so far been limited to gas adsorption. Herein we describe the design and synthesis of two new 3D microporous base-functionalized COFs, termed BF-COF-1 and BF-COF-2, by the use of a tetrahedral alkyl amine, 1,3,5,7-tetraaminoadamantane (TAA), combined with 1,3,5-triformylbenzene (TFB) or triformylphloroglucinol (TFP). As catalysts, both BF-COFs showed remarkable conversion (96% for BF-COF-1 and 98% for BF-COF-2), high size selectivity, and good recyclability in base-catalyzed Knoevenagel condensation reactions. This study suggests that porous functionalized 3D COFs could be a promising new class of shape-selective catalysts.read more
Citations
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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
Thioether-Based Fluorescent Covalent Organic Framework for Selective Detection and Facile Removal of Mercury(II).
TL;DR: This research demonstrates the utilization of fluorescent COFs for both sensing and removal of metal ions but also highlights the facile construction of functionalizedCOFs for environmental applications.
Journal ArticleDOI
Covalent organic frameworks based on Schiff-base chemistry: synthesis, properties and potential applications
TL;DR: This critical review article summarizes the current state-of-the-art on the design principles and synthetic strategies toward COFs based on Schiff-base chemistry, collects and rationalizes their physicochemical properties, as well as aims to provide perspectives of potential applications which are at the forefront of research in materials science.
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.
Journal ArticleDOI
Covalent organic frameworks (COFs): from design to applications
San-Yuan Ding,Wei Wang +1 more
TL;DR: This critical review describes the state-of-the-art development in the design, synthesis, characterisation, and application of the crystalline porous COF materials.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
Designed synthesis of 3D covalent organic frameworks.
Hani M. El-Kaderi,Joseph R. Hunt,Jose L. Mendoza-Cortes,Adrien P. Côté,Robert E. Taylor,Michael O'Keeffe,Omar M. Yaghi +6 more
TL;DR: Three-dimensional covalent organic frameworks (3D COFs) were synthesized by targeting two nets based on triangular and tetrahedral nodes: ctn and bor and have high thermal stabilities and high surface areas and extremely low densities.