Volume 181, 2015

Synthesis of multivalent silica nanoparticles combining both enthalpic and entropic patchiness

Abstract

Silica particles with a controlled number of entropic patches, i.e. dimples, are synthesized through the growth of the silica core of binary multipods that have been produced by a seeded-growth emulsion polymerization reaction. Transmission electron microscopy studies indicate that the silica surface conforms to the shape of the polystyrene (PS) nodules of the multipods while growing, allowing good control of the final shape of the dimpled silica particles. The PS nodules are also used as protecting masks to regioselectively graft amino groups, as revealed by the adsorption of gold markers. After dissolution of the PS nodules, some polymer chains remain grafted onto the silica surface, forming organic bumps. These residues are also selectively functionalized, leading to silica particles with both entropic and enthalpic patches.

Associated articles

Article information

Article type
Paper
Submitted
01 Dec 2014
Accepted
02 Jan 2015
First published
14 Jan 2015

Faraday Discuss., 2015,181, 139-146

Author version available

Synthesis of multivalent silica nanoparticles combining both enthalpic and entropic patchiness

C. Hubert, C. Chomette, A. Désert, M. Sun, M. Treguer-Delapierre, S. Mornet, A. Perro, E. Duguet and S. Ravaine, Faraday Discuss., 2015, 181, 139 DOI: 10.1039/C4FD00241E

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