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Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry

Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry

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LANZ, Cornelia, Moritz SCHLÖTTER, Nele KLINKENBERG, Patricia BESIRSKE, Sebastian POLARZ, 2020. Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry. In: Angewandte Chemie International Edition. Wiley. 59(23), pp. 8902-8906. ISSN 1433-7851. eISSN 1521-3773. Available under: doi: 10.1002/anie.202001423

@article{Lanz2020-06-02Stimu-49454, title={Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry}, year={2020}, doi={10.1002/anie.202001423}, number={23}, volume={59}, issn={1433-7851}, journal={Angewandte Chemie International Edition}, pages={8902--8906}, author={Lanz, Cornelia and Schlötter, Moritz and Klinkenberg, Nele and Besirske, Patricia and Polarz, Sebastian} }

Klinkenberg, Nele terms-of-use Lanz, Cornelia Klinkenberg, Nele Polarz, Sebastian Stimuli-Responsive Particle-Based Amphiphiles as Active Colloids Prepared by Anisotropic Click Chemistry Besirske, Patricia eng Besirske, Patricia Schlötter, Moritz 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. 2020-06-02 2020-05-08T09:37:05Z Schlötter, Moritz Polarz, Sebastian Lanz, Cornelia 2020-05-08T09:37:05Z

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