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
Convergent Covalent Organic Framework Thin Sheets as Flexible Supercapacitor Electrodes.
Abdul Khayum M,Abdul Khayum M,Vidyanand Vijayakumar,Vidyanand Vijayakumar,Suvendu Karak,Suvendu Karak,Sharath Kandambeth,Mohitosh Bhadra,Mohitosh Bhadra,Karthika Suresh,Karthika Suresh,Nikhil Acharambath,Sreekumar Kurungot,Sreekumar Kurungot,Rahul Banerjee,Rahul Banerjee +15 more
TL;DR: A facile and scalable synthesis of the convergent covalent organic framework (COF) free-standing flexible thin sheets through solid-state molecular baking strategy that offers the togetherness of crystallinity and flexibility in 2D COF thin sheets.
Journal ArticleDOI
Layer-Stacking-Driven Fluorescence in a Two-Dimensional Imine-Linked Covalent Organic Framework
Pablo Albacete,José I. Martínez,Xing Li,Alejandro López-Moreno,Sofı A Mena-Hernando,Ana E. Platero-Prats,Carmen Montoro,Kian Ping Loh,Emilio M. Pérez,Félix Zamora +9 more
TL;DR: This work has shown that layer stacking within these 2D-COF materials to give either eclipsed or staggered conformations can be controlled, at an atomic level through chemical design of the building blocks used in their synthesis.
Journal ArticleDOI
Crystal engineering in two dimensions: An approach to molecular nanopatterning
Krishna G. Nath,Oleksandr Ivasenko,Jennifer MacLeod,Jill A. Miwa,James D. Wuest,Antonio Nanci,Dmitrii F. Perepichka,Federico Rosei +7 more
TL;DR: In this paper, the authors describe a cooperative adsorption process observed by scanning tunneling microscopy (STM) at the liquid−solid interface, which involves the association of a threefold hydrogen-bonding unit, trimesic acid (TMA), with straight-chain aliphatic alcohols of varying length, which coadsorb on highly oriented pyrolytic graphite (HOPG) to form linear patterns.
Journal ArticleDOI
Facile room-temperature synthesis of a spherical mesoporous covalent organic framework for ultrasensitive solid-phase microextraction of phenols prior to gas chromatography-tandem mass spectrometry
Lu Liu,Wei-Kun Meng,Lei Li,Guiju Xu,Xia Wang,Li-Zong Chen,Ming-Lin Wang,Jin-Ming Lin,Ru-Song Zhao +8 more
TL;DR: In this paper, a spherical TPB-DMTP-COF was fabricated via a simple room-temperature solution-phase approach and the material exhibited high acid/base stability, remarkable thermostability, high crystallinity, and large surface area of 1560m2
Journal ArticleDOI
Advancement in porous adsorbents for post-combustion CO2 capture
Arindam Modak,Subhra Jana +1 more
TL;DR: In this paper, the authors highlight the recent progresses on metal-organic frameworks, POPs, COFs and mesoporous oxides as CO2 adsorbent and illustrate their CO2 separation selectivity and enthalpy of interaction etc.
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.