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Issue 18, 2015
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Facile production of stable silicon nanoparticles: laser chemistry coupled to in situ stabilization via room temperature hydrosilylation

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Abstract

Stable, alkyl-terminated, light-emitting silicon nanoparticles have been synthesized in a continuous process by laser pyrolysis of a liquid trialkyl-silane precursor selected as a safer alternative to gas silane (SiH4). Stabilization was achieved by in situ reaction using a liquid collection system instead of the usual solid state filtration. The alkene contained in the collection liquid (1-dodecene) reacted with the newly formed silicon nanoparticles in an unusual room-temperature hydrosilylation process. It was achieved by the presence of fluoride species, also produced during laser pyrolysis from the decomposition of sulfur hexafluoride (SF6) selected as a laser sensitizer. This process directly rendered alkyl-passivated silicon nanoparticles with consistent morphology and size (<3 nm), avoiding the use of costly post-synthetic treatments.

Graphical abstract: Facile production of stable silicon nanoparticles: laser chemistry coupled to in situ stabilization via room temperature hydrosilylation

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Article information


Submitted
12 Feb 2015
Accepted
03 Apr 2015
First published
10 Apr 2015

Nanoscale, 2015,7, 8566-8573
Article type
Paper
Author version available

Facile production of stable silicon nanoparticles: laser chemistry coupled to in situ stabilization via room temperature hydrosilylation

A. Malumbres, G. Martínez, J. L. Hueso, J. Gracia, R. Mallada, A. Ibarra and J. Santamaría, Nanoscale, 2015, 7, 8566
DOI: 10.1039/C5NR01031D

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