Colloidal lattices of environmentally responsive microgel particles at ionic liquid–water interfaces

Haobo Chen, Elizabeth M. Nofen, Konrad Rykaczewski, Lenore Dai

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

This work reports new evidence of the versatility of soft and environmentally responsive micron-sized colloidal gel particles as stabilizers at ionic liquid-water droplet interfaces. These particles display a duality with properties ascribed typically to both polymeric and colloidal systems. The utilization of fluorescently labeled composite microgel particles allows in-situ and facile visualization without the necessity of invasive sample preparation. When the prepared particles form monolayers equilibrated at the ionic liquid-water interface on fully covered droplets, the colloidal lattice re-orders itself depending on the surface charge of these particles. Finally, we demonstrate that the spontaneously formed and densely packed layer of microgel particles can be employed for extraction applications, as the interface remains permeable to small active species.

Original languageEnglish (US)
Pages (from-to)440-447
Number of pages8
JournalJournal of Colloid and Interface Science
Volume504
DOIs
StatePublished - Oct 15 2017

Keywords

  • Colloidal lattice
  • Environmentally responsive
  • Ionic liquid
  • Microgel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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