Porous, Crystalline, Covalent Organic Frameworks

@article{Ct2005PorousCC,
  title={Porous, Crystalline, Covalent Organic Frameworks},
  author={Adrien P. C{\^o}t{\'e} and Annabelle I. Benin and Nathan W. Ockwig and Michael O'Keeffe and Adam J. Matzger and Omar M. Yaghi},
  journal={Science},
  year={2005},
  volume={310},
  pages={1166 - 1170}
}
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, P63/mmc) or eclipsed (COF-5, P6/mmm). Their crystal structures are entirely held by strong bonds between B, C, and O… 

Chemical Conversion of Linkages in Covalent Organic Frameworks.

This work demonstrates (a) the first chemical conversion of a COF linkage and (b) how the usual "crystallization problem" encountered in COF chemistry can be bypassed to access COFs, such as these amides, that are typically thought to be difficult to obtain by the usual de novo methods.

Designed Synthesis of 3D Covalent Organic Frameworks

Three-dimensional covalent organic frameworks (3D COFs) were synthesized by targeting two nets based on triangular and tetrahedral nodes: ctn and bor and have high thermal stabilities and high surface areas and extremely low densities.

A Porous Metal‐Organic Framework Based on Triazoledicarboxylate Ligands – Synthesis, Structure, and Gas‐Sorption Studies

A new porous metal-organic framework (MOF) {[CuL]·DMF·2H2O}n [1a, H2L = 5-(4H-1,2,4-triazol-4-yl)benzene-1,3-dicarboxylic acid; DMF = N,N-dimethylformamide] with zigzag-shaped, narrow channels was

An Azine-Linked Covalent Organic Framework: Synthesis, Characterization and Efficient Gas Storage.

The new covalent organic framework material combines permanent micropores, high crystallinity, good thermal and chemical stability, and abundant heteroatom activated sites in the skeleton to exhibit remarkable carbon dioxide uptake and methane uptake and high CO2 /N2 selectivity.

A Water-Soluble 3D Covalent Organic Framework That Displays Enhanced Enrichment Effect of Photosensitizers and Catalysts for the Reduction of Protons to H2.

The synthesis of the first highly water-soluble 3D COF (sCOF-101) is reported from irreversible polymerization of a preorganized supramolecular organic framework through cucurbit[8]uril (CB[8])-controlled [2 + 2] photodimerization, which exhibits porosity periodicity.

2D Covalent Organic Frameworks with Alternating Triangular and Hexagonal Pores

C organic frameworks (COFs) are an incipient class of porous crystalline materials that have attracted considerable attention for applications related to gas storage, separations, optoelectronics,5−7

The structure of layered covalent-organic frameworks.

It is shown that the stacking of 2D COFs are considerably more stable if their stacking arrangement is either serrated or inclined, and layers are shifted with respect to each other by ~1.4 Å compared with perfect AA stacking.

A porous, crystalline truxene-based covalent organic framework and its application in humidity sensing

Truxene is employed as a building block to successfully synthesize novel covalent organic frameworks (COFs). The condensation reaction between truxene
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