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Ferro-Self-Assembly : Magnetic and Electrochemical Adaptation of a Multiresponsive Zwitterionic Metalloamphiphile Showing a Shape-Hysteresis Effect

Ferro-Self-Assembly : Magnetic and Electrochemical Adaptation of a Multiresponsive Zwitterionic Metalloamphiphile Showing a Shape-Hysteresis Effect

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BITTER, Stefan, Moritz SCHLÖTTER, Markus SCHILLING, Rainer F. WINTER, Sebastian POLARZ, 2020. Ferro-Self-Assembly : Magnetic and Electrochemical Adaptation of a Multiresponsive Zwitterionic Metalloamphiphile Showing a Shape-Hysteresis Effect. In: Chemical Science. Royal Society of Chemistry (RSC). ISSN 2041-6520. eISSN 2041-6539. Available under: doi: 10.26434/chemrxiv.12370406.v1

@article{Bitter2020Ferro-51321, title={Ferro-Self-Assembly : Magnetic and Electrochemical Adaptation of a Multiresponsive Zwitterionic Metalloamphiphile Showing a Shape-Hysteresis Effect}, year={2020}, doi={10.26434/chemrxiv.12370406.v1}, issn={2041-6520}, journal={Chemical Science}, author={Bitter, Stefan and Schlötter, Moritz and Schilling, Markus and Winter, Rainer F. and Polarz, Sebastian} }

Winter, Rainer F. Schilling, Markus Polarz, Sebastian terms-of-use Winter, Rainer F. Bitter, Stefan We report on a novel multi-stimuli-responsive amphiphile, 1-(Z)-heptenyl-1’-dimethylammonium-methyl-(3-sulfopropyl)ferrocene (6), whose self-assembly properties can be altered by three different stimuli, namely: (i) the addition of external salts which serve to unfold the sultone headgroup, thus triggering self-assembly of 6 into vesicles; (ii) oxidation to 6<sup>+</sup>, which changes the lipophilic ferrocene to a hydrophilic ferrocenium entity, thereby broadening the size-distribution of the aggregates; and (iii) exposition of 6<sup>+</sup> to an external magnetic field of 0.8 T. Under thease conditions and at sufficient concentration, 6<sup>+</sup> forms large, tubular aggregates with lengths of up to 15 µm, which persist for over 5 min after the field is switched off again. 6<sup>+</sup> is thus the first amphiphile to exhibit a shape-hysteresis effect. The self-assembly/disassembly processes and their dynamics were studied live and in situ by optical birefringence measurements coupled to light scattering. Bitter, Stefan Schlötter, Moritz Ferro-Self-Assembly : Magnetic and Electrochemical Adaptation of a Multiresponsive Zwitterionic Metalloamphiphile Showing a Shape-Hysteresis Effect 2020-10-13T11:14:18Z Schlötter, Moritz 2020-10-13T11:14:18Z eng Polarz, Sebastian Schilling, Markus 2020

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