Journal Article

FZJ-2026-05804

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Self-healing and hyperelastic magneto-iono-elastomers through molecular confinement of magnetic anions

Zhang, X. ; Zhang, L.FZJ* ; Liu, M. ; Chng, C. B. ; Ler, E. P. Y. ; Zhou, J. ; Matsuhisa, N. ; Tan, Y. J. (Corresponding author)

2025
Assoc. Washington, DC [u.a.]

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Please use a persistent id in citations: doi:10.1126/sciadv.adq7441  doi:10.34734/FZJ-2026-05804

Abstract: Magneto-responsiveness in living organisms, exemplified by migratory birds navigating vast distances, offers inspiration for soft robots and human-computer interfaces. However, achieving both high magneto-responsiveness and resilient mechanical properties in synthetic materials has been challenging. Here, we develop magneto-iono-elastomers (MINEs), combining exceptional magnetization [2.6 emu (electromagnetic units)/g] with hyperelasticity and self-healability. Such a MINE consists of a magnetic ionic liquid (MIL; [Emim][FeCl4]) and a urethane group–based polymer that can distinctively confine magnetic anions through strong intermolecular interactions, including potential hydrogen bonds and metal-coordination bonds. This confinement enables high MIL loading (80 wt %) while maintaining structure integrity, resulting in a high ionic conductivity exceeding 10−3 S/cm. Furthermore, the synergistic interplay of these reversible bonds in MINEs contributes to an outstanding elastic recovery that surpasses 99%, alongside good self-healing capabilities. The unique combination of these attributes positions MINE as a promising candidate for diverse magnetoelectronic applications, encompassing wearable strain sensors, contactless magneto-responsive electronics, see-through touch panels, and soft magnetic carriers.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)

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