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  Structurally anisotropic Janus particles with tunable amphiphilicity via polymerization of dynamic complex emulsions

Frank, B. D., Antonietti, M., & Zeininger, L. (2021). Structurally anisotropic Janus particles with tunable amphiphilicity via polymerization of dynamic complex emulsions. Macromolecules, 54(2), 981-987. doi:10.1021/acs.macromol.0c02152.

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 Urheber:
Frank, Bradley D.1, Autor           
Antonietti, Markus2, Autor           
Zeininger, Lukas1, Autor           
Affiliations:
1Lukas Zeininger, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3179204              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Schlagwörter: Polymer particles; Emulsions; Interfaces; Nanoparticles; Colloidal particles
 Zusammenfassung: A facile one-step approach for the synthesis of physically and chemically anisotropic polymer particles with tunable size, shape, composition, wettability, and functionality is reported. Specifically, dynamically reconfigurable oil-in-water Janus emulsions containing photocurable hydrocarbon or fluorocarbon acrylate monomers as one of the droplet phases are used as structural templates to polymerize them into precision Janus particles with highly uniform anomalous morphologies including (hemi-) spheres, lenses, and bowls. During polymerization, each interface is exposed to a different chemical environment, yielding particles with an intrinsic Janus character that can be amplified via side-selective postfunctionalization. The fabrication method allows to start with various common emulsification techniques, thus generating particles in the range of 200 nm –150 μm, also at a technical scale. The anisotropic shape combined with the asymmetric wettability profile of the produced particles promotes their directed self-assembly into colloidal clusters as well as their directional alignment at fluid interfaces. We foresee the application of such Janus particles in technical emulsions or oil recovery, for the manufacturing of programmed self-assembled architectures, and for the engineering of microstructured interfaces.

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Sprache(n): eng - English
 Datum: 2020-12-072021
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1021/acs.macromol.0c02152
BibTex Citekey: doi:10.1021/acs.macromol.0c02152
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Titel: Macromolecules
  Andere : Macromolecules
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : American Chemical Society
Seiten: - Band / Heft: 54 (2) Artikelnummer: - Start- / Endseite: 981 - 987 Identifikator: ISSN: 0024-9297