Simple systematic synthesis of periodic mesoporous organosilica nanoparticles with adjustable aspect ratios.

Nanoscale Research Letters
Paritosh Mohanty, Kai Landskron

Abstract

One-dimensional periodic mesoporous organosilica (PMO) nanoparticles with tunable aspect ratios are obtained from a chain-type molecular precursor octaethoxy-1,3,5-trisilapentane. The aspect ratio can be tuned from 2:1 to >20:1 simply by variation in the precursor concentration in acidic aqueous solutions containing constant amounts of triblock copolymer Pluronic P123. The mesochannels are highly ordered and are oriented parallel to the longitudinal axis of the PMO particles. No significant Si-C bond cleavage occurs during the synthesis according to29Si MAS NMR. The materials exhibit surface areas between 181 and 936 m2 g-1.

References

Oct 11, 2003·Science·Kai LandskronGeoffrey A Ozin
Apr 20, 2005·Accounts of Chemical Research·Benjamin HattonGeoffrey A Ozin
Sep 1, 2005·Analytical and Bioanalytical Chemistry·G Gruner
Mar 31, 2006·The Journal of Physical Chemistry. B·Weon-Sik ChaeYong-Rok Kim
Oct 9, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Eun-Bum ChoMietek Jaroniec
Sep 20, 2008·Chemical Communications : Chem Comm·Xiulei JiLinda F Nazar
Jan 1, 2008·Nanoscale Research Letters·Paritosh Mohanty, Kai Landskron

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Citations

Nov 21, 2015·Nanoscale·Jonas G CroissantNiveen M Khashab

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Methods Mentioned

BETA
NMR

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