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Qiang, Xiaolian ; Franzka, Steffen ; Dai, Xuezhi ; Gröschel, André H.:
Multicompartment Microparticles of SBT Triblock Terpolymers through 3D Confinement Assembly.
In: Macromolecules.
Bd. 53
(2020)
Heft 11
.
- S. 4224-4233.
ISSN 1520-5835
DOI: https://doi.org/10.1021/acs.macromol.0c00806
Abstract
Self-assembly of block copolymers in three-dimensional (3D) soft confinement has become a versatile method for the preparation of functional microparticles. While the morphological behavior of AB diblock copolymers in confinement is fairly well understood, only sporadic examples exist for ABC triblock terpolymers. Considering the more complex morphological space of terpolymers, a better understanding of their behavior in confinement would be desirable to gain access to a large variety of multicompartment microparticles (MMs). Here, we report on the 3D confinement self-assembly of MMs from a library of polystyrene-block-polybutadiene-block-poly(tert-butyl methacrylate) (PS-b-PB-b-PT or SBT) triblock terpolymers with widely different block volume fractions (ϕ), which can be mapped into a ternary microphase diagram. Equal-sized end blocks (ϕS ≈ ϕT) result in MMs with lamella–lamella (LL) morphology and a tulip-bulb or pinecone shape, irrespective of ϕB. For asymmetric end blocks (ϕS > ϕT) at low ϕB, prolate ellipsoids develop a hexagonally packed core–shell ring (HCR) morphology, which changes with increasing ϕB to a transition structure between HCR and a concentric sphere-in-lamella (CSL) morphology. Further increasing ϕB to ϕS ≈ ϕB at low ϕT, the structure transforms entirely to CSL in an onion-like shape. Selective cross-linking of the PB middle block and disassembly of the MMs give access to a variety of nanostructures such as core–shell rings, Janus nanobowls, and nanocups.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayerisches Zentrum für Batterietechnik - BayBatt Forschungseinrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Polymermaterialien für elektrochemische Speicher > Lehrstuhl Polymermaterialien für elektrochemische Speicher - Univ.-Prof. Dr. André Gröschel |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 28 Jul 2023 07:28 |
| Letzte Änderung: | 02 Aug 2023 07:53 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/86390 |