Enantioselective Colloidosomes Based on Chiral Silica Nanoparticles

Gila Levi, Yitzhak Mastai

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Pickering emulsion is one of the principal methods for the formation of colloidosomes, offering a high level of control over their size and permeability. In this article, we describe the synthesis of chiral colloidosomes based on chiral silica nanoparticles produced in a sol-gel process combining a chiral (S)-N-1-phenylethyl-N′-triethoxysilylpropylurea precursor with tetraethyl orthosilicate. Chiral colloidosomes with a typical diameter of 1.7 μm were obtained from Pickering assembly of partially hydrophobized nanoparticles, as confirmed by electron microscopy and FTIR spectroscopy. The enantioselectivity of the silica colloidosomes was confirmed by enantioselective adsorption of racemic dichlorprop herbicide solutions onto the capsules, as proved by circular dichroism spectroscopy. Similar chiral colloidosomes could be synthesized in this facile and low-cost method, which are expected to be of interest in various chiral applications, especially those requiring controlled release. Overall, chiral colloidosomes could open a new gateway for the design of novel functional inorganic microcapsules.

Original languageEnglish
Pages (from-to)710-714
Number of pages5
JournalChemNanoMat
Volume5
Issue number6
DOIs
StatePublished - Jun 2019

Bibliographical note

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

G. Levi thanks Dr. Yochai Basel for his support throughout the research project. She also thanks Dr. Vijay Bhooshan Kumar for providing the sonication probe. G. Levi acknowledges funding from the Department of Chemistry at Bar-Ilan University. This research was supported by the Israel Science Foundation (grant No. 1549/17) and by the Ministry of Science, Technology and Space.

FundersFunder number
Ministry of Science, Technology and Space
Department of Mathematics, Bar-Ilan University
Israel Science Foundation1549/17

    Keywords

    • chirality
    • colloidosomes
    • nanoparticles
    • pickering emulsion
    • sol-gel

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