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Keywords:

  • ionic liquids;
  • magnetic surfactants;
  • micellization;
  • surface tension
Thumbnail image of graphical abstract

Droplet attraction: Surfactants responsive to magnetic fields are reported for the first time. This new class of magnetic ionic liquid surfactants (MILSs; see picture) shows remarkable effects on surface and interfacial tension and allows access to magneto-responsive emulsions and new methods of separation, recovery, catalysis, and potential magnetophoretic applications.