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Blas H, Save M, Pasetto P, et al. Elaboration of monodisperse spherical hollow particles with ordered mesoporous silica shells via dual latex/surfactant templating: radial orientation of mesopore channels. Langmuir. 2008;24(22):13132-7doi: 10.1021/la801897k.
Blas, H., Save, M., Pasetto, P., Boissière, C., Sanchez, C., & Charleux, B. (2008). Elaboration of monodisperse spherical hollow particles with ordered mesoporous silica shells via dual latex/surfactant templating: radial orientation of mesopore channels. Langmuir : the ACS journal of surfaces and colloids, 24(22), 13132-7. https://doi.org/10.1021/la801897k
Blas, Hélène, et al. "Elaboration of monodisperse spherical hollow particles with ordered mesoporous silica shells via dual latex/surfactant templating: radial orientation of mesopore channels." Langmuir : the ACS journal of surfaces and colloids vol. 24,22 (2008): 13132-7. doi: https://doi.org/10.1021/la801897k
Blas H, Save M, Pasetto P, Boissière C, Sanchez C, Charleux B. Elaboration of monodisperse spherical hollow particles with ordered mesoporous silica shells via dual latex/surfactant templating: radial orientation of mesopore channels. Langmuir. 2008 Nov 18;24(22):13132-7. doi: 10.1021/la801897k. Epub 2008 Oct 24. PMID: 18947208.
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Langmuir. 2008 Nov 18;24(22):13132-7. doi: 10.1021/la801897k. Epub 2008 Oct 24.

Elaboration of monodisperse spherical hollow particles with ordered mesoporous silica shells via dual latex/surfactant templating: radial orientation of mesopore channels.

Langmuir : the ACS journal of surfaces and colloids

Hélène Blas, Maud Save, Pamela Pasetto, Cédric Boissière, Clément Sanchez, Bernadette Charleux

Affiliations

  1. UPMC and CNRS, Univ. Paris 6, UMR 7610, Laboratoire de Chimie des Polymeres, 4 Place Jussieu, 75252 Paris Cedex 05, France.

PMID: 18947208 DOI: 10.1021/la801897k

Abstract

Monodisperse spherical hollow nanoparticles of mesoporous silica featuring mesopores with a radial orientation in the silica shell were synthesized via a dual-templating method. Specifically designed polystyrene latexes with anionic or cationic surface charges acted as the core templates, while cetyltrimethylammonium bromide served as a co-template to structure the mesopore formation during tetraethoxysilane hydrolysis/condensation. The particles were well-separated and presented homogeneous mesoporous silica shells. Average particle diameters were less than 200 nm, and the particles displayed high values of specific surface area and pore volume. The shell thickness and the hollow core diameter could be tuned independently while the radial pore structure was preserved. A detailed analysis of the nitrogen adsorption-desorption isotherms proved that the central cavity was completely isolated from the external medium, that is, only accessible through the radial mesopores of the shell. Consequently, our particles gather the advantages of a well-defined structure, straight penetrating channels across the silica shell, and a high accessible porous volume of the central core. These properties make them far better candidates than simple mesoporous particles for any storage and/or controlled release applications.

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