Periodic mesoporous organosilica (PMO) materials with uniform spherical core-shell structure

Chemistry : a European Journal
Stefanie HafferMichael Fröba

Abstract

We report the synthesis of monodisperse, spherical periodic mesoporous organosilica (PMO) materials. The particles have diameters between about 350 and 550 nm. They exhibit a regular core-shell structure with a solid, non-porous silica core and a mesoporous PMO shell with a thickness of approximately 75 nm and uniform pores of about 1.7 nm. The synthesis of the core and the shell is carried out in a one-pot, two-stage synthesis and can be accomplished at temperatures between 25 and 100 °C. Higher synthesis temperatures lead to substantial shrinking of the solid core, generating an empty void between core and shell. This leads to interesting cavitation phenomena in the nitrogen physisorption analysis at 77.4 K.

References

Dec 19, 2002·Journal of the American Chemical Society·Mahendra P KapoorShinji Inagaki
Sep 1, 2005·Journal of the American Chemical Society·Abdelhamid Sayari, Wenhui Wang
Jan 13, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Matthias ThommesAlexander V Neimark
May 6, 2006·Angewandte Chemie·Frank HoffmannMichael Fröba

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Citations

Oct 6, 2015·Advanced Drug Delivery Reviews·Harutaka MekaruFuyuhiko Tamanoi
Apr 1, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Jiwei CuiFrank Caruso
Nov 21, 2015·Nanoscale·Jonas G CroissantNiveen M Khashab
Jan 4, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Mandy JahnsPeter Behrens
Dec 25, 2010·Chemical Society Reviews·Frank Hoffmann, Michael Fröba
Dec 23, 2011·Journal of the American Chemical Society·Kevin E ShopsowitzMark J MacLachlan
Feb 15, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Christopher J RasmussenAlexander V Neimark

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