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
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-6023
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY-NC-ND
Information on rights of use:	https://creativecommons.org/licenses/by-nc-nd/4.0/
Journal:	Angewandte Chemie 60 8
Pages or article number:	4358 4367
Publisher:	Wiley-VCH
Publisher place:	Weinheim
Issue date:	2021
ISSN:	1521-3773
Publisher URL:	https://doi.org/10.1002/anie.202011592
Publisher DOI:	10.1002/anie.202011592
Appears in collections:	JGU-Publikationen