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Medientyp:
E-Artikel;
Sonstige Veröffentlichung
Titel:
Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry
Beteiligte:
Lanz, Cornelia
[VerfasserIn];
Schlötter, Moritz
[VerfasserIn];
Klinkenberg, Nele
[VerfasserIn];
Besirske, Patricia
[VerfasserIn];
Polarz, Sebastian
[VerfasserIn]
Erschienen:
Weinheim : Wiley-VCH, 2020
Erschienen in:Angewandte Chemie International Edition (Formerly: Angewandte Chemie: International Edition in English) 59 (2020), Nr. 23 ; Angewandte Chemie International Edition (Formerly: Angewandte Chemie: International Edition in English)
Anmerkungen:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Beschreibung:
Amphiphiles alter the energy of surfaces, but the extent of this feature is typically constant. Smart systems with amphiphilicity as a function of an external, physical trigger are desirable. As a trigger, the exposure to a magnetic field, in particular, is attractive because it is not shielded in water. Amphiphiles like surfactants are well known, but the magnetic response of molecules is typically weak. Vice-versa, magnetic particles with strong response to magnetic triggers are fully established in nanoscience, but they are not amphiphilic. In this work colloids with Janus architecture and ultra-small dimensions (25 nm) have been prepared by spatial control over the thiol-yne click modification of organosilica-magnetite core–shell nanoparticles. The amphiphilic properties of these anisotropically modified particles are proven. Finally, a pronounced and reversible change in interfacial stabilization results from the application of a weak (<1 T) magnetic field.