Wavelength-Gated Adaptation of Hydrogel Properties via Photo-Dynamic Multivalency in Associative Star Polymers.
Arylazopyrazole
Hydrogels
Photoresponsive Systems
Photoswitch
Wavelength-Gated Engineering
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:
19 02 2021
19 02 2021
Historique:
received:
24
08
2020
revised:
23
10
2020
pubmed:
13
11
2020
medline:
13
11
2020
entrez:
12
11
2020
Statut:
ppublish
Résumé
Responsive materials, such as switchable hydrogels, have been largely engineered for maximum changes between two states. In contrast, adaptive systems target distinct functional plateaus between these maxima. Here, we demonstrate how the photostationary state (PSS) of an E/Z-arylazopyrazole photoswitch can be tuned by the incident wavelength across a wide color spectrum, and how this behavior can be exploited to engineer the photo-dynamic mechanical properties of hydrogels based on multivalent photoswitchable interactions. We show that these hydrogels adapt to the wavelength-dependent PSS and the number of arylazopyrazole units by programmable relationships. Hence, our material design enables the facile adjustment of the mechanical properties without laborious synthetic efforts. The concept goes beyond the classical switching from state A to B, and demonstrates pathways for a truly wavelength-gated adaptation of hydrogel properties potentially useful to engineer cell fate or in soft robotics.
Identifiants
pubmed: 33180989
doi: 10.1002/anie.202011592
pmc: PMC7898538
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
4358-4367Informations de copyright
© 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
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