Journal article

Publication year: 2016

Pages: 4455-4463

Journal: New Journal of Chemistry

Volume number: 40

Issue number: 5

ISSN: 1144-0546

Open access status: Hybrid

DOI Link: https://doi.org/10.1039/c6nj00758a

Publisher: Royal Society of Chemistry

Abstract: 
The ortho-, meta- and para-isomers of bis(trimethoxysilyl)benzene and bis((trimethoxysilyl)phenyl)dimethoxysilane were synthesized from their corresponding diarylbromides. Mixtures of these bis(trimethoxysilyl)arenes and tetramethoxysilane (TMOS) were used as organosilica precursors for the preparation of macromesoporous silica monoliths using different amounts of the porogen poly(ethylene glycol) to investigate the effect on the porosity of the final materials. The prepared samples were characterized by nitrogen and dibromomethane sorption measurements, mercury intrusion porosimetry and scanning electron microscopy. The analysis of dibromomethane isotherms indicated a significantly lower polarity of the mesopore surface compared to that of pure SiO2 monoliths, proving the presence of arene units at the mesopore surfaces.

Harvard Citation style: von der Lehr, M., Ellinghaus, R. and Smarsly, B. (2016) Hierarchically porous monolithic silica with varying porosity using bis(trimethoxysilyl)arenes as precursors, New Journal of Chemistry, 40(5), pp. 4455-4463. https://doi.org/10.1039/c6nj00758a

APA Citation style: von der Lehr, M., Ellinghaus, R., & Smarsly, B. (2016). Hierarchically porous monolithic silica with varying porosity using bis(trimethoxysilyl)arenes as precursors. New Journal of Chemistry. 40(5), 4455-4463. https://doi.org/10.1039/c6nj00758a