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01-02-2012 | Research Paper

Silica encapsulation of luminescent silicon nanoparticles: stable and biocompatible nanohybrids

Authors: Vincent Maurice, Ilaria Rivolta, Julien Vincent, Olivier Raccurt, Jean-Noel Rouzaud, Giuseppe Miserrochi, Eric Doris, Cécile Reynaud, Nathalie Herlin-Boime

Published in: Journal of Nanoparticle Research | Issue 2/2012

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Abstract

This article presents a process for surface coating and functionalization of luminescent silicon nanoparticles. The particles were coated with silica using a microemulsion process that was adapted to the fragile silicon nanoparticles. The as-produced core–shell particles have a mean diameter of 35 nm and exhibit the intrinsic photoluminescence of the silicon core. The silica layer protects the core from aqueous oxidation for several days, thus allowing the use of the nanoparticles for biological applications. The nanoparticles were further coated with amines and functionalized with polyethylene glycol chains and the toxicity of the particles has been evaluated at the different stages of the process. The core–shell nanoparticles exhibit no acute toxicity towards lung cells, which is promising for further development.

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Title: Silica encapsulation of luminescent silicon nanoparticles: stable and biocompatible nanohybrids
Authors: Vincent Maurice
Ilaria Rivolta
Julien Vincent
Olivier Raccurt
Jean-Noel Rouzaud
Giuseppe Miserrochi
Eric Doris
Cécile Reynaud
Nathalie Herlin-Boime
Publication date: 01-02-2012
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 2/2012
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-011-0697-0

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