Synthesis of sol-gel silica particles in reverse micelles with mixed-solvent polar cores: tailoring nanoreactor structure and properties

Kristyna Burglova; Jan Hlavac; John R Bartlett

doi:10.1007/s11051-015-3104-4

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Synthesis of sol-gel silica particles in reverse micelles with mixed-solvent polar cores: tailoring nanoreactor structure and properties

Journal article

Peer reviewed

Synthesis of sol-gel silica particles in reverse micelles with mixed-solvent polar cores: tailoring nanoreactor structure and properties

Kristyna Burglova, Jan Hlavac and John R Bartlett

Journal of Nanoparticle Research, Vol.17(308), pp.1-17

2015

DOI: https://doi.org/10.1007/s11051-015-3104-4

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Abstract

reverse micelles

sol-gel

encapsulation

sodium bis(2-ethylhexyl)sulfosuccinate

silica nanoparticles

In this paper, we describe a new approach for producing metal oxide nano- and microparticles via sol-gel processing in confined media (sodium bis(2-ethylhexyl)sulfosuccinate reverse micelles), in which the chemical and physical properties of the polar aqueous core of the reverse micelles are modulated by the inclusion of a second polar co-solvent. The co-solvents were selected for their capacity to solubilise compounds with low water solubility and included dimethylsulfoxide, dimethylformamide, ethylene glycol, n-propanol, dimethylacetamide and N-methylpyrrolidone. A broad range of processing conditions across the sodium bis(2-ethylhexyl)sulfosuccinate/cyclohexane/water phase diagram were identified that are suitable for preparing particles with dimensions less than 50 to more than 500 nm. In contrast, only a relatively narrow range of processing conditions were suitable for preparing such particles in the absence of the co-solvents, highlighting the role of the co-solvent in modulating the properties of the polar core of the reverse micelles. A mechanism is proposed that links the interactions between the various reactive sites on the polar head group of the surfactant and the co-solvent to the nucleation and growth of the particles.

Details

Title: Synthesis of sol-gel silica particles in reverse micelles with mixed-solvent polar cores: tailoring nanoreactor structure and properties
Authors: Kristyna Burglova (Author) - Institute of Molecular and Translational Medicine, Czech Republic
Jan Hlavac (Author) - Institute of Molecular and Translational Medicine, Czech Republic
John R Bartlett (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Journal of Nanoparticle Research, Vol.17(308), pp.1-17
Publisher: Springer Netherlands
Date published: 2015
DOI: 10.1007/s11051-015-3104-4
ISSN: 1388-0764
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449582102621
Output Type: Journal article

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Collaboration types: International collaboration
Web Of Science research areas: Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology