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Authors: Ludanowski, Simon
Skarsetz, Oliver
Creusen, Guido
Hoenders, Daniel
Straub, Paula
Walther, Andreas
Title: Wavelength-gated adaptation of hydrogel properties via photo-dynamic multivalency in associative star polymers
Online publication date: 25-Jun-2021
Year of first publication: 2021
Language: english
Abstract: 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.
DDC: 540 Chemie
540 Chemistry and allied sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 09 Chemie, Pharmazie u. Geowissensch.
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY-NC-ND
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Journal: Angewandte Chemie
Pages or article number: 4358
Publisher: Wiley-VCH
Publisher place: Weinheim
Issue date: 2021
ISSN: 1521-3773
Publisher URL:
Publisher DOI: 10.1002/anie.202011592
Appears in collections:JGU-Publikationen

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