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Robust, ultrasmall organosilica nanoparticles without silica shells

  • Eoin Murray
  • Philip Born
  • Anika Weber
  • Tobias KrausEmail author
Research Paper

Abstract

Traditionally, organosilica nanoparticles have been prepared inside micelles with an external silica shell for mechanical support. Here, we compare these hybrid core–shell particles with organosilica particles that are robust enough to be produced both inside micelles and alone in a sol–gel process. These particles form from octadecyltrimethoxy silane as silica source either in microemulsions, resulting in water-dispersible particles with a hydrophobic core, or precipitate from an aqueous mixture to form particles with both hydrophobic core and surface. We examine size and morphology of the particles by dynamic light scattering and transmission electron microscopy and show that the particles consist of Si–O–Si networks pervaded by alkyl chains using nuclear magnetic resonance, infrared spectroscopy, and thermogravimetric analysis.

Keywords

Nanoparticle synthesis Stöber process Organosilica Micelles 

Supplementary material

11051_2014_2462_MOESM1_ESM.docx (581 kb)
Supplementary material 1 (DOCX 580 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Eoin Murray
    • 1
    • 2
  • Philip Born
    • 1
  • Anika Weber
    • 1
  • Tobias Kraus
    • 1
    Email author
  1. 1.Structure Formation GroupINM – Leibniz Institute for New MaterialsSaarbrüeckenGermany
  2. 2.Institute for Sports ResearchNanyang Technological UniversitySingaporeSingapore

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