From an Octakis(3‐cyanopropyl)silsesquioxane Building Block to a Highly COOH‐Functionalized Hybrid Organic–Inorganic Material
作者： Arnaud Boullanger , Guillaume Gracy , Nicolas Bibent , Sabine Devautour-Vinot , Sébastien Clément
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摘要: A new nanostructured and highly COOH-functionalized hybrid organic–inorganic material has been synthesized by the hydrolysis of oligomeric octahedral silsesquioxane (POSS), which contains eight cyanopropyl groups. The hybrid, elemental building block octakis(3-cyanopropyl)silsesquioxane (CN-POSS) was from octakis(3-chloropropyl)silsesquioxane (Cl-POSS) an exchange reaction. formation nanostructuration were induced noncovalent hydrogen bonding between COOH-POSS units without decomposition core. fully characterized scanning electron microscopy, FTIR 1H, 13C, 29Si solid-state NMR spectroscopy, X-ray diffraction, analysis, confirm that POSS core remains intact after each chemical modification step. Thermogravimetric analysis indicates organic are thermally stable up to 200 °C. activation energy related proton conductivity evaluated confirms presence strong bonds. Finally, accessibility adsorption capacity COOH groups towards transition metal ions have demonstrated underline potential these materials in extraction chemistry.
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