Self-Templated Generation of Triggerable and Restorable
Nonequilibrium Micelles
Posted on 2018-02-22 - 20:14
Conditional variations can lead to
micellar transformations resulting
in various (equilibrium) morphologies. However, creating differently
shaped assemblies under the same final conditions (same ingredients,
composition, temperature, etc.) is challenging. We present a thermoresponsive
polyelectrolyte system allowing a pathway-dependent preparation of
kinetically stable spherical star-like or cylindrical micelles. In
more detail, a temperature-induced structure switch is used to generate
equilibrated interpolyelectrolyte complex (IPEC) micelles of different
morphologies (templates) below and above the lower critical solution
temperature in the presence of plasticizer (salt). Then, lowering
the salt concentration at a specific temperature kinetically freezes
the formed IPECs, keeping the respective microstructural information
encoded in the frozen IPEC also at other temperatures. Hence, different
nonequilibrium morphologies at the same final conditions are provided.
The salt-triggered transition from nonequilibrium to equilibrium micelles
can be repeated for the same sample, highlighting a system with an
on-demand changeable and restorable structure.
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Dähling, Claudia; Houston, Judith E.; Radulescu, Aurel; Drechsler, Markus; Brugnoni, Monia; Mori, Hideharu; et al. (2018). Self-Templated Generation of Triggerable and Restorable
Nonequilibrium Micelles. ACS Publications. Collection. https://doi.org/10.1021/acsmacrolett.8b00096
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AUTHORS (8)
CD
Claudia Dähling
JH
Judith E. Houston
AR
Aurel Radulescu
MD
Markus Drechsler
MB
Monia Brugnoni
HM
Hideharu Mori
DP
Dmitry V. Pergushov
FP
Felix A. Plamper
KEYWORDS
IPECtemperature-induced structure switchmicellar transformationsmicrostructural informationpathway-dependent preparationsalt-triggered transitionRestorable Nonequilibrium Micelles Conditional variationsSelf-Templated Generationrestorable structuresolution temperaturenonequilibrium morphologiessalt concentrationequilibrium micellesthermoresponsive polyelectrolyte systemtemperature kinetically