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
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TLDR
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.Abstract:
Covalent organic frameworks (COFs) have been designed and successfully synthesized by condensation reactions of phenyl diboronic acid {C6H4[B(OH)2]2} and hexahydroxytriphenylene [C18H6(OH)6]. Powder x-ray diffraction studies of the highly crystalline products (C3H2BO)6.(C9H12)1 (COF-1) and C9H4BO2 (COF-5) revealed expanded porous graphitic layers that are either staggered (COF-1, P6(3)/mmc) or eclipsed (COF-5, P6/mmm). Their crystal structures are entirely held by strong bonds between B, C, and O atoms to form rigid porous architectures with pore sizes ranging from 7 to 27 angstroms. COF-1 and COF-5 exhibit high thermal stability (to temperatures up to 500 degrees to 600 degrees C), permanent porosity, and high surface areas (711 and 1590 square meters per gram, respectively).read more
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Journal ArticleDOI
Urea-Linked Covalent Organic Frameworks.
Chenfei Zhao,Christian S. Diercks,Chenhui Zhu,Nikita Hanikel,Xiaokun Pei,Omar M. Yaghi,Omar M. Yaghi +6 more
TL;DR: These compounds are the first urea-linked COFs, serving to expand the scope of reticular chemistry.
Journal ArticleDOI
Toward Two-Dimensional π-Conjugated Covalent Organic Radical Frameworks.
TL;DR: The first π-conjugated two-dimensional covalent organic radical framework (CORF), PTM-CORF, based on the stable polychlorotriphenylmethyl (PTM) radical is reported, which exhibits high electrocatalytic activity and durability toward the oxygen reduction reaction.
Journal ArticleDOI
Perylene Based Porous Polyimides: Tunable, High Surface Area with Tetrahedral and Pyramidal Monomers
TL;DR: In this paper, the synthesis and adsorption properties of novel, high surface area porous polyimides based on perylene were reported and the surface area and pore size distribution of these polymers were tuned by adopting structure directing trigonal and tetrahedral perylene monomers.
Journal ArticleDOI
Construction of Covalent Organic Frameworks via Three-Component One-Pot Strecker and Povarov Reactions
TL;DR: A new synthetic strategy that can generate new COFs via multicomponent one-pot in situ reac-tions and might open a new route for constructing COFs that are not possible under PSM conditions is reported.
Journal ArticleDOI
Switching on and off Interlayer Correlations and Porosity in 2D Covalent Organic Frameworks.
Torben Sick,Julian M. Rotter,Stephan Reuter,Sharath Kandambeth,Nicolai N. Bach,Markus Döblinger,Julia Merz,Timothy Clark,Todd B. Marder,Thomas Bein,Dana D. Medina +10 more
TL;DR: Strikingly, the framework structure of TAPB-COFs responds dynamically to such chemical stimuli, demonstrating that their porosity and crystallinity can be reversibly controlled by alternating steps of solvent stimuli and scCO2 activation.
References
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Book
Adsorption by Powders and Porous Solids: Principles, Methodology and Applications
TL;DR: In this paper, the authors provide an introductory review of the various theoretical and practical aspects of adsorption by powders and porous solids with particular reference to materials of technological importance.
Journal ArticleDOI
An ordered mesoporous organosilica hybrid material with a crystal-like wall structure.
TL;DR: The surfactant-mediated synthesis of an ordered benzene–silica hybrid material has an hexagonal array of mesopores and crystal-like pore walls that exhibit structural periodicity, and it is expected that other organosilicas and organo-metal oxides can be produced in a similar fashion, to yield a range of hierarchically ordered mesoporous solids with molecular-scale pore surface periodicity.
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Unified Approach to Pore Size Characterization of Microporous Carbonaceous Materials from N2, Ar, and CO2 Adsorption Isotherms†
TL;DR: In this paper, a unified approach to pore size characterization of microporous carbonaceous materials such as activated carbon and carbon fibers by nitrogen, argon, and carbon dioxide adsorption at standard temperatures, 77 K for N2 and Ar and 273 K for CO2, was presented.
Journal ArticleDOI
Adsorption Study of Surface and Structural Properties of MCM-41 Materials of Different Pore Sizes
TL;DR: In this paper, the pore size of MCM-41 materials was estimated based on geometrical considerations of the ratio of pore volume to pore wall volume for an infinite hexagonal array of cylindrical pores.