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
Reads0
Chats0
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
More filters
Journal ArticleDOI
A porous, crystalline truxene-based covalent organic framework and its application in humidity sensing
Harpreet Singh,Vijay K. Tomer,Nityasagar Jena,Indu Bala,Nidhi Sharma,Devadutta Nepak,Abir De Sarkar,Kamalakannan Kailasam,Santanu Kumar Pal +8 more
TL;DR: In this paper, a nanochannels generated by periodic COF planar layers are shown to ease the interactions of the boron ester linkages with the water molecules for efficient humidity sensing.
Journal ArticleDOI
Three-Dimensional Mesoporous Covalent Organic Frameworks through Steric Hindrance Engineering.
Yujie Wang,Yaozu Liu,Hui Li,Xinyu Guan,Ming Xue,Yushan Yan,Valentin Valtchev,Valentin Valtchev,Shilun Qiu,Qianrong Fang +9 more
TL;DR: By placing methoxy and methyl groups strategically on the monomers, this work can obtain non-interpenetrated 3D COFs of diamondoid structures with permanent mesopores and high surface areas which are far superior to those of reported conventional COFs with the same topology.
Journal ArticleDOI
Boron-substituted graphyne as a versatile material with high storage capacities of Li and H2: a multiscale theoretical study
Ruifeng Lu,Dewei Rao,Dewei Rao,Zhaoshun Meng,Xuebiao Zhang,Genjian Xu,Yuzhen Liu,Erjun Kan,Chuanyun Xiao,Kaiming Deng +9 more
TL;DR: The multiscale simulations demonstrate that chemical modifications in two-dimensional carbon structures are very promising for high lithium storage and hydrogen uptake and are proposed to be a good anode material in lithium-ion batteries.
Journal ArticleDOI
Chiral porous organic frameworks for asymmetric heterogeneous catalysis and gas chromatographic separation.
Jinqiao Dong,Yan Liu,Yong Cui +2 more
TL;DR: POF- is shown to be an efficient heterogeneous catalyst after metallation for asymmetric conjugation addition with up to 93% ee, and it can also function as a new chiral stationary phase for gas chromatographic separation of racemates.
Journal ArticleDOI
Utilization of Ag nanoparticles anchored in covalent organic frameworks for mercury removal from acidic waste water
TL;DR: The present work not only provides a COF-supported Ag NPs material for Hg(II) ions removal from acidic waste water but also opens a new field of design of functionalized COFs material for applications in environmental pollutions control.
References
More filters
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.