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Supramolecular Modification of ABC Triblock Terpolymers in Confinement Assembly

Title data

Quintieri, Giada ; Saccone, Marco ; Spengler, Matthias ; Giese, Michael ; Gröschel, André H.:
Supramolecular Modification of ABC Triblock Terpolymers in Confinement Assembly.
In: Nanomaterials. Vol. 8 (2018) Issue 12 . - 1029.
ISSN 2079-4991

Abstract in another language

The self-assembly of AB diblock copolymers in three-dimensional (3D) soft confinement of nanoemulsions has recently become an attractive bottom up route to prepare colloids with controlled inner morphologies. In that regard, ABC triblock terpolymers show a more complex morphological behavior and could thus give access to extensive libraries of multicompartment microparticles. However, knowledge about their self-assembly in confinement is very limited thus far. Here, we investigated the confinement assembly of polystyrene-block-poly(4-vinylpyridine)-block-poly(tert-butyl methacrylate) (PS-b-P4VP-b-PT or SVT) triblock terpolymers in nanoemulsion droplets. Depending on the block weight fractions, we found spherical microparticles with concentric lamella–sphere (ls) morphology, i.e., PS/PT lamella intercalated with P4VP spheres, or unusual conic microparticles with concentric lamella–cylinder (lc) morphology. We further described how these morphologies can be modified through supramolecular additives, such as hydrogen bond (HB) and halogen bond (XB) donors. We bound donors to the 4VP units and analyzed changes in the morphology depending on the binding strength and the length of the alkyl tail. The interaction with the weaker donors resulted in an increase in volume of the P4VP domains, which depends upon the molar fraction of the added donor. For donors with a high tendency of intermolecular packing, a visible change in the morphology was observed. This ultimately caused a shape change in the microparticle. Knowledge about how to control inner morphologies of multicompartment microparticles could lead to novel carbon supports for catalysis, nanoparticles with unprecedented topologies, and potentially, reversible shape changes by light actuation.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: 3D confinement assembly; block copolymers; halogen bond; microparticles; multicompartment; nanoemulsions; supramolecular chemistry
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: 26 Jul 2023 11:37
Last Modified: 02 Aug 2023 07:53