Dynamically Reconfigurable, Multifunctional Emulsions with Controllable Structure and Movement
Name
doi-10.1002 adma.201905569.pdf
Description
Accepted version
Size
1.7 MB
Format
Adobe PDF
Checksum (MD5)
fc2d91f178f980dee706699f56e80de4
Author(s)
Ku, Kang Hee
Li, Jie
Yoshinaga, Kosuke
Swager, Timothy M
Date Issued
October 2019
Journal
Advanced Materials
Publisher
Wiley
Citation
Ku, Kang Hee et al. "Dynamically Reconfigurable, Multifunctional Emulsions with Controllable Structure and Movement." Advanced Materials 31, 51 (October 2019): 1905569 © 2019 Wiley
Version
Author's final manuscript
Abstract
Dynamically reconfigurable oil-in-water (o/w) Pickering emulsions are developed, wherein the assembly of particles (i.e., platinum-on-carbon and iron-on-carbon particles) can be actively controlled by adjusting interfacial tensions. A balanced adsorption of particles and surfactants at the o/w interface allows for the creation of inhomogeneity of the particle distribution on the emulsion surface. Complex Pickering emulsions with highly controllable and reconfigurable morphologies are produced in a single step by exploiting the temperature-sensitive miscibility of hydrocarbon and fluorocarbon liquids. Dynamic adsorption/desorption of (polymer) surfactants afford both shape and configuration transitions of multiple Pickering emulsions and encapsulated core/shell structured can be transformed into a Janus configuration. Finally, to demonstrate the intrinsic catalytic or magnetic properties of the particles provided by carbon bound Pt and Fe nanoparticles, two different systems are investigated. Specifically, the creation of a bimetallic microcapsule with controlled payload release and precise modulation of translational and rotational motions of magnetic emulsions are demonstrated, suggesting potential applications for sensing and smart payload delivery.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1002/adma.201905569
