Solubilization of hydrophobic molecules in nanoparticles formed by polymer-surfactant interactions

Gilat Nizri, Shlomo Magdassi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

The interaction between the anionic surfactant, sodium dodecyl sulfate, and the polyelectrolyte, poly(diallyldimethylammonium chloride), may lead to formation of nanoparticles dispersed in water. The morphology of the resulting nanoparticles and their ability to solubilize hydrophobic molecules were evaluated. As shown by SEM and AFM imaging, the particles are spherical, having a diameter of about 20 nm. The solubilization within the nanoparticles was tested with pyrene, a fluorescence probe, and Nile Red, a solvatochromic probe. It was found that for Nile Red the solubilization within the nanoparticles is at lower polarity than for SDS micelles, and from pyrene solubilization it appears that the hydrophobicity of the nanoparticles depends on the ratio between the SDS molecules and the charge unit of the polymer.

Original languageAmerican English
Pages (from-to)169-174
Number of pages6
JournalJournal of Colloid and Interface Science
Volume291
Issue number1
DOIs
StatePublished - 1 Nov 2005

Bibliographical note

Funding Information:
This work was supported in part by grants from the European Union NACBO program and from the Israel Ministry of Industry and Commerce, NFM MAGNET program.

Keywords

  • CAC
  • CMC
  • Nanoparticles
  • Nile Red
  • PDAC
  • Polymer
  • Pyrene
  • SDS
  • Solubilization
  • Surfactant

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