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Issue 4, 2008
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Super-microporous organosilicas synthesized from well-defined nanobuilding units

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Abstract

Super-microporous organosilica with bridging ethylene and pendant vinyl groups has been synthesized by assembling predefined nanobuilding block polyhedral oligomeric silsesquioxanes (POSS) with nonionic surfactant Brij-76 as the template. The material shows wormhole-like super-micropores with uniform size of 1.9 nm, high BET surface area of 872 m2 g–1 and pore volume of 0.52 cm3 g–1. IR and NMR results show that the bridging ethylene, the pendant vinyl groups and the double-4-membered ring structure were successfully transferred from the building blocks to the super-microporous organosilica material. The material shows high hydrothermal stability and can further react with Br2. The advantage of the present approach lies in that the relative contents and proximity of the different organic functionalities in the final material can be well controlled through the starting nanobuilding blocks.

Graphical abstract: Super-microporous organosilicas synthesized from well-defined nanobuilding units

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Publication details

The article was received on 01 Oct 2007, accepted on 16 Nov 2007 and first published on 29 Nov 2007


Article type: Paper
DOI: 10.1039/B715031H
Citation: J. Mater. Chem., 2008,18, 450-457
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    Super-microporous organosilicas synthesized from well-defined nanobuilding units

    L. Zhang, Q. Yang, H. Yang, J. Liu, H. Xin, B. Mezari, P. C. M. M. Magusin, H. C. L. Abbenhuis, R. A. V. Santen and C. Li, J. Mater. Chem., 2008, 18, 450
    DOI: 10.1039/B715031H

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