Porous, Crystalline, Covalent Organic Frameworks
2005/11/18 by Adrien P. Côté, Annabelle I. Benin, N.W. Ockwig +3 · 23 citations
Materials Science · Chemistry · #Covalent Organic Framework Applications #Metal-Organic Frameworks: Synthesis and Applications #Mesoporous Materials and Catalysis
paper · doi:10.1126/science.1120411
openalex publication_date 2005/11/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
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).
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