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Vesicular Polymer Hexosomes Exhibit Topological Defects

Title data

Wong, Chin Ken ; Heidelmann, Markus ; Dulle, Martin ; Qiang, Xiaolian ; Förster, Stephan ; Stenzel, Martina H. ; Gröschel, André H.:
Vesicular Polymer Hexosomes Exhibit Topological Defects.
In: Journal of the American Chemical Society. Vol. 142 (2020) Issue 25 . - pp. 10989-10995.
ISSN 1520-5126

Abstract in another language

Polymer hexosomes are block copolymer solution morphologies that adopt an internal structure composed of an inverse hexagonal (HII) phase. To date, most polymer hexosomes are reportedly rotationally symmetric solid structures that possess a common feature where hexagonally ordered inverted cylinders rotate along a central axis of symmetry to form circular hoops. Here, we report on the formation of polymer hexosomes whose inverted cylinders orient in an unusual manner, forming hoops that are noncircular. For topological reasons, this led to the generation of four defects in the resulting hexosome structure. We find that these defect-bearing hexosomes are hollow, thereby resembling polymer vesicles or polymersomes with an inverse hexagonal cylindrical morphology in the shell. The topological defects of these so-called “vesicular hexosomes” are enticing as they could serve as a platform to spatially anchor targeting ligands or biomolecules on the surface, while the hollow cylindrical shell and the vesicular lumen could spatially accommodate cargoes within the different domains. We propose that these vesicular hexosomes do not form via a conventional nucleation–growth self-assembly pathway, but rather via a two-step process involving first liquid–liquid phase separation followed by polymer microphase separation.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Research Institutions > Central research institutes > Bayerisches Zentrum für Batterietechnik - BayBatt
Research Institutions
Research Institutions > Central research institutes
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Polymer Materials for Electrochemical Storage > Chair Polymer Materials for Electrochemical Storage - Univ.-Prof. Dr. André Gröschel
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 28 Jul 2023 07:24
Last Modified: 02 Aug 2023 07:53