Details

Autor(en) / Beteiligte

• El-Kaderi, Hani M
• Hunt, Joseph R
• Mendoza-Cortés, José L
• Côté, Adrien P
• Taylor, Robert E
• O'Keeffe, Michael
• Yaghi, Omar M

Titel

Designed Synthesis of 3D Covalent Organic Frameworks

Ist Teil von

• Science (American Association for the Advancement of Science), 2007-04, Vol.316 (5822), p.268-272

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2007

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• Three-dimensional covalent organic frameworks (3D COFs) were synthesized by targeting two nets based on triangular and tetrahedral nodes: ctn and bor. The respective 3D COFs were synthesized as crystalline solids by condensation reactions of tetrahedral tetra(4-dihydroxyborylphenyl) methane or tetra(4-dihydroxyborylphenyl)silane and by co-condensation of triangular 2,3,6,7,10,11-hexahydroxytriphenylene. Because these materials are entirely constructed from strong covalent bonds (C-C, C-O, C-B, and B-O), they have high thermal stabilities (400° to 500°C), and they also have high surface areas (3472 and 4210 square meters per gram for COF-102 and COF-103, respectively) and extremely low densities (0.17 grams per cubic centimeter).