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Magnetic Control over Liquid Surface Properties with Responsive Surfactants


  • P.B. thanks HEFCE and the University of Bristol, School of Chemistry for a DTA, PhD scholarship. A.B. and A.M.S. credit funding by ERA NanoSciE+. We also achnowledge STFC for the allocation of beam time, travel, and consumables grants at ILL, and the Krüss Surface Science Centre, Bristol, for facilities for surface tension measurements.


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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.