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Hierarchically Ordered Monolithic Silica with Bimodal Porosity Obtained by Hydrolysis and Condensation of 1,4‐Bis(trimethoxysilyl)arenes
1,4‐Bis(trimethoxysilyl)benzene and 1,4‐bis((trimethoxysilyl)‐phenyl)‐dimethoxysilane were synthesized from their corresponding diarylbromides. These bis(trimethoxysilyl)arenes were used as organosilica precursors for the preparation of macro‐/mesoporous silica monoliths, using poly(ethylen glycol) as a porogen to obtain a well‐defined bicontinuous macroporosity and mesoporosity. The porosity of the prepared materials was characterized by nitrogen sorption measurements, mercury intrusion and scanning electron microscopy. The incorporation of silylarenes was studied by solid‐state 13C NMR spectroscopy, IR spectroscopy and elemental analysis.
Hierarchically Ordered Monolithic Silica with Bimodal Porosity Obtained by Hydrolysis and Condensation of 1,4‐Bis(trimethoxysilyl)arenes
1,4‐Bis(trimethoxysilyl)benzene and 1,4‐bis((trimethoxysilyl)‐phenyl)‐dimethoxysilane were synthesized from their corresponding diarylbromides. These bis(trimethoxysilyl)arenes were used as organosilica precursors for the preparation of macro‐/mesoporous silica monoliths, using poly(ethylen glycol) as a porogen to obtain a well‐defined bicontinuous macroporosity and mesoporosity. The porosity of the prepared materials was characterized by nitrogen sorption measurements, mercury intrusion and scanning electron microscopy. The incorporation of silylarenes was studied by solid‐state 13C NMR spectroscopy, IR spectroscopy and elemental analysis.
Hierarchically Ordered Monolithic Silica with Bimodal Porosity Obtained by Hydrolysis and Condensation of 1,4‐Bis(trimethoxysilyl)arenes
von der Lehr, Martin (author) / Weidmann, Christoph (author) / Mascotto, Simone (author) / Smarsly, Bernd M. (author)
Chemie Ingenieur Technik ; 85 ; 1700-1706
2013-11-01
7 pages
Article (Journal)
Electronic Resource
English
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