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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A Bird's Eye view on process and engineering aspects of hydrogen storage
Inkollu Sreedhar,Krutarth M. Kamani,Krutarth M. Kamani,Bansi M. Kamani,Benjaram M. Reddy,Akula Venugopal +5 more
TL;DR: In this article, different methods of hydrogen storage viz., physical, chemical and electrochemical in various forms like gas, liquid and solid have been discussed and compared in terms of their efficacy, capacity, operating conditions and other safety aspects.
Journal ArticleDOI
Selective CO2 capture in an imine linked porphyrin porous polymer
TL;DR: In this paper, a microporous imine-linked porous porphyrin polymer, called CuPor-BPDC, has been solvothermally synthesized.
Journal ArticleDOI
Two-Dimensional Kagome Lattices Made of Hetero Triangulenes Are Dirac Semimetals or Single-Band Semiconductors
TL;DR: Based on first-principles calculations, two-dimensional (2D) kagome lattices composed of polymerized heterotriangulene units, planar molecules with D3h point group containing a B, C, or N center atom and CH2, O, or CO bridges are discussed.
Journal ArticleDOI
An azine-linked hexaphenylbenzene based covalent organic framework
Sampath B. Alahakoon,Christina M. Thompson,Amy X. Nguyen,Gino Occhialini,Gregory T. McCandless,Ronald A. Smaldone +5 more
TL;DR: An azine linked covalent organic framework based on a six-fold symmetric hexphenylbenzene monomer functionalized with aldehyde groups, HEX-COF 1 has an average pore size, a surface area in excess of 1200 m(2) g(-1) and shows excellent sorption capability for carbon dioxide and methane.
Journal ArticleDOI
Tuning the stacking behaviour of a 2D covalent organic framework through non-covalent interactions
Frederik Haase,Frederik Haase,Kerstin Gottschling,Kerstin Gottschling,Linus Stegbauer,Linus Stegbauer,Luzia S. Germann,Rico Gutzler,Viola Duppel,Vijay S. Vyas,Klaus Kern,Klaus Kern,Robert E. Dinnebier,Bettina V. Lotsch,Bettina V. Lotsch +14 more
TL;DR: In this article, the geometric and electronic features of the COF building blocks are used to guide the stacking behavior of two related 2D imine COFs, which either adopt an averaged "eclipsed" structure with apparent zero-offset stacking or a unidirectionally slip-stacked structure, respectively.
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.
Journal ArticleDOI
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.