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
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
Citations
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Journal ArticleDOI
Targeted Synthesis of a Porous Aromatic Framework with High Stability and Exceptionally High Surface Area
Teng Ben,Hao Ren,Shengqian Ma,Dapeng Cao,Jianhui Lan,Xiaofei Jing,Wenchuan Wang,Jun Xu,Feng Deng,Jason M. Simmons,Shilun Qiu,Guangshan Zhu +11 more
TL;DR: A strategy is presented that has enabled the synthesis and properties of a porous aromatic framework PAF-1, which has a Langmuir surface area of 7100 m g, and outperforms highly porous MOFs in thermal and hydrothermal stabilities.
Journal ArticleDOI
Conjugated Microporous Poly(aryleneethynylene) Networks
Jia-Xing Jiang,Fabing Su,Abbie Trewin,Colin D. Wood,Neil L. Campbell,Hongjun Niu,Calum Dickinson,Alexey Y. Ganin,Matthew J. Rosseinsky,Yaroslav Z. Khimyak,Andrew I. Cooper +10 more
TL;DR: Rigid wiry nets: Conjugated microporous polymer networks are formed by Sonogashira–Hagihara coupling, and the micropore size and surface area can be controlled by varying the length of the phenyleneethynylene struts.
Journal ArticleDOI
Construction of crystalline 2D covalent organic frameworks with remarkable chemical (Acid/Base) stability via a combined reversible and irreversible route
TL;DR: 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.
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
Nano-architectures by covalent assembly of molecular building blocks
TL;DR: It is shown that covalently bound molecular nanostructures can be formed on a gold surface upon thermal activation of porphyrin building blocks and their subsequent chemical reaction at predefined connection points, and it is demonstrated that the topology of these nanostructure can be precisely engineered by controlling the chemical structure of the building blocks.
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.