Chemically Fueled Volume Phase Transition of Polyacid Microgels.
dissipative self-assembly
fuels
microgels
nonequilibrium processes
polymers
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
22 03 2021
22 03 2021
Historique:
revised:
10
12
2020
received:
28
10
2020
pubmed:
20
12
2020
medline:
20
12
2020
entrez:
19
12
2020
Statut:
ppublish
Résumé
Microgels are soft colloids that show responsive behavior and are easy to functionalize for applications. They are considered key components for future smart colloidal material systems. However, so far microgel systems have almost exclusively been studied in classical responsive switching settings using external triggers, while internally organized, autonomous control mechanisms as found in supramolecular chemistry and DNA nanotechnology relying on fuel-driven out-of-equilibrium concepts have not been implemented into microgel systems. Here, we introduce chemically fueled transient volume phase transitions (VPTs) for poly(methacrylic acid) (PMAA) microgels, where the collapsed hydrophobic state can be programmed using the fuel concentration in a cyclic reaction network. We discuss details of the system behavior as a function of pH and fuel amount, unravel kinetically trapped regions and showcase transient encapsulation and time-programmed release as a first application.
Identifiants
pubmed: 33340387
doi: 10.1002/anie.202014417
pmc: PMC8048534
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
7117-7125Informations de copyright
© 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
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