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Synthesis of Solid Silica-Coated Magnetic Nanoparticles for Drug Targeting

  • Mariela A. Agotegaray
  • Verónica L. Lassalle
Chapter
Part of the SpringerBriefs in Molecular Science book series (BRIEFSMOLECULAR)

Abstract

Coating of magnetic nanoparticles is strongly required in order to obtain nanocarriers with suitable properties in terms of stability (low aggregation in aqueous media), surface functionality, and magnetism. Silica appears as an attractive compound to assess these goals. Among preventing aggregation, it is able to provide biocompatibility and the easy linkage of multiple ligands to specific applications.

Methodologies adopted to incorporate a silica layer on a magnetic core are varied; among them the Stöber method is the most widely employed. To a lesser extent, microemulsion, sodium silicate hydrolysis methods, sonochemical method among others are usually used for the synthesis.

From the above mentioned procedures it is feasible to prepare magnetic silica coated nanoparticles or even other kinds of magnetic silica materials. These features are achieved by simply modifying the experimental variables inherent to each method.

A comparison between these methodologies leads to the most adequate preparation technique as a function of the intended applications.

Keywords

Silica coating Stöber method Microemulsion Hydrolysis 

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Copyright information

© The Author(s) 2017

Authors and Affiliations

  • Mariela A. Agotegaray
    • 1
  • Verónica L. Lassalle
    • 1
  1. 1.INQUISUR – CONICETUniversidad Nacional del SurBahía BlancaArgentina

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