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. 2022 Jul;43(14):e2100932.
doi: 10.1002/marc.202100932. Epub 2022 Apr 21.

Confinement Assembly of Terpolymer-Based Janus Nanoparticles

Suna Azhdari  1 , Fabian Herrmann  2 , Deniz Coban  1 , Jürgen Linders  3 , André H Gröschel  1
Affiliations

Confinement Assembly of Terpolymer-Based Janus Nanoparticles

Suna Azhdari et al. Macromol Rapid Commun. 2022 Jul.

Abstract

While the confinement assembly of block copolymers into functional microparticles has been extensively studied, little is known about the behavior of Janus nanoparticles (JNPs) in spherical confinement. Here, the confinement self-assembly of JNPs in drying emulsion droplets is investigated and their behavior compared to their ABC triblock terpolymer precursors. Emulsions of both materials are prepared using Shirasu Porous Glass membranes leading to narrow size distributions of the microparticles with average hydrodynamic radii in the range of Rh = 250-500 nm (depending on the membrane pore radius, Rpore ). The internal structure of the microparticles is verified with transmission electron microscopy (TEM) on ultrathin cross sections and compared to the corresponding bulk morphologies. While the confinement assembly of terpolymers results in microparticles with ordered inner morphologies, order for JNPs diminishes when the Janus balance deviates from parity.

Keywords: Janus nanoparticles; SPG membranes; block copolymers; emulsions; microphase separation; monodisperse microparticles.

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References

    1. A. H. Gröschel, A. Walther, T. I. Löbling, F. H. Schacher, H. Schmalz, A. H. E. Müller, Nature 2013, 503, 247.
    1. H. Qiu, Z. M. Hudson, M. A. Winnik, I. Manners, Science 2015, 347, 1329.
    1. M. Stefik, S. Guldin, S. Vignolini, U. Wiesner, U. Steiner, Chem. Soc. Rev. 2015, 44, 5076.
    1. F. H. Schacher, P. A. Rupar, I. Manners, Angew. Chemie Int Ed. 2012, 51, 7898.
    1. J. Zhao, M. H. Stenzel, Polym. Chem. 2018, 9, 259.

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