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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Advances in pantographic structures: design, manufacturing, models, experiments and image analyses
Francesco dell’Isola,Pierre Seppecher,Mario Spagnuolo,Mario Spagnuolo,Emilio Barchiesi,Emilio Barchiesi,François Hild,Tomasz Lekszycki,Ivan Giorgio,Ivan Giorgio,Luca Placidi,Ugo Andreaus,Massimo Cuomo,Simon R. Eugster,Aron Pfaff,Klaus Hoschke,Ralph Langkemper,Emilio Turco,Rizacan Sarikaya,Aviral Misra,Michele De Angelo,Francesco D’Annibale,Amine Bouterf,Xavier Pinelli,Anil Misra,Boris Desmorat,Boris Desmorat,Marek Pawlikowski,Corinne Dupuy,Daria Scerrato,Patrice Peyre,Marco Laudato,Luca Manzari,Peter Göransson,Christian Hesch,Sofia Hesch,P. Franciosi,Justin Dirrenberger,Florian Maurin,Zacharias Vangelatos,Costas P. Grigoropoulos,Vasileia Melissinaki,Maria Farsari,Wolfgang H. Müller,Bilen Emek Abali,Christian Liebold,Gregor Ganzosch,Philip G. Harrison,Rafał Drobnicki,Rafał Drobnicki,Leonid A. Igumnov,Faris Alzahrani,Tasawar Hayat +52 more
TL;DR: An organic scheme of the whole process of design, fabrication, experiments, models, models and image analyses of pantographic metamaterials is presented.
Journal ArticleDOI
Sustained Solar H2 Evolution from a Thiazolo[5,4-d]thiazole-Bridged Covalent Organic Framework and Nickel-Thiolate Cluster in Water.
Bishnu P. Biswal,Hugo A. Vignolo-González,Hugo A. Vignolo-González,Tanmay Banerjee,Lars Grunenberg,Lars Grunenberg,Gökcen Savasci,Gökcen Savasci,Kerstin Gottschling,Kerstin Gottschling,Jürgen Nuss,Christian Ochsenfeld,Bettina V. Lotsch +12 more
TL;DR: A simple, efficient, and low-cost all-in-one photocatalytic H2 evolution system composed of a thiazolo[5,4-d]thiazole-linked COF as the photoabsorber and an earth-abundant, noble-metal-free nickel-thiolate hexameric cluster co-catalyst assembled in situ in water, together with triethanolamine as the sacrificial electron donor is reported.
Journal ArticleDOI
Remarkably catalytic activity in reduction of 4-nitrophenol and methylene blue by Fe3O4@COF supported noble metal nanoparticles
Yulong Xu,Xiaofei Shi,Rui Hua,Rui Zhang,Youjin Yao,Bo Zhao,Tong Liu,Jianzhong Zheng,Guang Lu +8 more
TL;DR: In this article, a core-shell structure of Fe3O4@COF-Au was constructed and used as a support for the immobilization of ultrafine Au NPs for the first time.
Journal ArticleDOI
Covalent-organic frameworks: potential host materials for sulfur impregnation in lithium–sulfur batteries
TL;DR: In this paper, a 2D covalent triazine-based framework (CTF-1) was used as a host material to construct a sulfur electrode by impregnating sulfur into the nanopores of COFs.
Journal ArticleDOI
Covalent organic frameworks: efficient, metal-free, heterogeneous organocatalysts for chemical fixation of CO2 under mild conditions
TL;DR: In this paper, two triazine-based covalent organic frameworks (COF-JLU6 and JLU7) were successfully synthesized under solvothermal conditions.
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.