Covalent organic framework

Severin and coworkers reported (146) the reaction of tris(2-aminoethyl)amine and 4-formylphenylboronic acid with penta-erythritol to give, via multicomponent assembly, the boronic acid based macrobicyclic cage 35 (Fig. 25). The cage has the form of an ellipsoid with a diameter of 20.5 A and binds two Cud) ions in a fashion similar to the smaller tren-based cryptands. The reversible formation of boronic esters has also been employed to build other hollow structures such as nanotubes (147) and porous covalent organic frameworks (148,149). [Pg.428]

A second area that will be important in the future is the continued development of MOFs and ZlFs [152]. Much as the discovery of AlP04-based materials revolutionized the catalyhc use of zeolites when only aluminosilicates were known, MOFs and ZlFs have the potential to revolutionize low temperature processes such as oxidations and organic reachons [153]. Newly discovered materials along these same lines are covalent organic frameworks, the so-called COFs [154]. These materials have similar channels to those known for MOFs and ZlFs but tend to have higher thermal stability. [Pg.393]

Figure 4.6 Illustration of a covalent organic framework (COF) material composed of hexahydroxytriphenylene and either tetra(4-dihydroxyborylphenyl)methane or silane crosslinking moieties. (From Reference [56] with permission.)...

Very recently covalent organic frameworks (COFs) 33 have been designed and synthesized by simply condensation of phenyl diboronic acid with hexahy-droxytriphenylene (67) (Fig. 14). Material 33 is composed of expanded porous graphitic layers, with pore sizes up to 27 A. Covalent organic framework (33) is thermally stable till 500-600°C and have a surface area of 1590 m g. This exceeds the highest reported surface area of 1300 m g for macroporous ordered silica. [Pg.225]

Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs)... [Pg.347]

In addition to polystyrene, several other polymers have been provided with the hypercrosslinked structure, and, in addition to the postcrosslinking of preformed polymeric chains, other synthetic approaches to hypercrosslinked open networks have been developed, including the direct polymerization and polycondensation of appropriate monomers or co-monomers. The recently developed metal-organic frameworks and covalent organic frameworks constitute three-dimensional coordination and element-organic polymers with an unusually h%h free volume they fit into the new and rapidly growing class of hypercrosslinked network materials as well. [Pg.667]

Covalent organic frameworks (COFs Sect. 3.1) 711-4,210 0.32-1.66" High thermeil stability porosity sensitive to air for B-conteiining COFs Highest MOP surface areas crystalline tunable pores [14, 20, 67]... [Pg.5]

Figure 1.9 ThevariationofH2adsorbed(wt%)atsaturationat77KwithBET (a)and Langmuir surface area (b) for porous MOFs, carbons, zeolites, silicas, polymers, and covalent organic frameworks (COFs). Reprinted with permission from K.M. Thomas, Dalton Trans., 9,1487-1505. Copyright (2009) Royal Society of Chemistry...

Wan S, Guo J, Kim J, Ihee H, Jiang D (2009) A photoconductive covalent organic framework self-condensed arene cubes composed of eclipsed 2D Polypyrene sheets for photocurrent generation. Angew Chem Int Ed 48 5439-5442... [Pg.138]

C6t6 AP, Benin AI, Ockwig NW, O Keeffe M, Matzger AJ, Yaghi OM (2005) Porous, crystalline, covalent organic frameworks. Science 310 1166-1170... [Pg.138]

El-Kaderi HM, Hunt JR, Medoza-Cortes JL, Cote AP, Taylor RE, O Keeffe M, YagM OM (2007) Designed synthesis of 3D covalent organic frameworks. Science 316 268-272... [Pg.138]

Furukawa H, Yaghi OM (2009) Storage of hydrogen, methane, rmd carbon dioxide in highly porous covalent organic frameworks for clean errergy applications. J Am Chem Soc 131 8875- 883... [Pg.173]

Ding S-Y, Wang W (2013) Covalent organic frameworks (COFs) from design to applications. Chem Soc Rev 42 548-568... [Pg.175]

Feng X, Ding X, Jiang D (2012) Covalent organic frameworks. Chem Soc Rev... [Pg.175]

Yang Q, Zhong C (2009) Molecular simulation study of the stepped behaviors of gas adsorption in two-dimensional covalent organic frameworks. Langmuir 25 2302-2308... [Pg.175]

Babarao R, Jiang J (2008) Exceptionally high CO2 storage in covalent-organic frameworks atomistic simulation study. Energy Environ Sci 1 139-143... [Pg.175]

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