Self‐Healing Photochromic Elastomer Composites for Wearable UV‐Sensors

Abstract: Photochromic materials have recently received strong interest for the development of wearable ultraviolet (UV) detection technologies because they do not require electronic components, resulting in systems and devices that change color upon irradiation. However, their implementation in wearable technology has lightweight, compliance, and durability (especially under mechanical stress) requirements that are limited by the materials’ properties. Here, a self‐healing photochromic elastomer composite (photoPUSH) consisting of phosphomolybdic acid (PMA) in a self‐healing polyurethane dynamic network with reversible disulfide bonds (PUSH) is presented. The unique properties of the dynamic polymer matrix enable multiple complementary functions in the UV‐sensing composite: i) photochromism via electron donor groups without requiring additional dopants, ii) stretchability and durability via elastomeric properties, iii) healing of extreme mechanical damage via dynamic bonds, and iv) multimaterial integration via adhesive properties. PhotoPUSH composites exhibit excellent durability, tunable sensing range, and no loss of performance under mechanical stress and severe damage, as well as in underwater environments (waterproof). Leveraging these properties, soft, portable, multimaterial photoPUSH‐based UV‐sensing devices are developed for applications in environmental monitoring, packaging, and healthcare wearable technology (including skin‐mounted, textile‐mounted, and wristband devices) in challenging environments and tunable to different skin types.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Self‐Healing Photochromic Elastomer Composites for Wearable UV‐Sensors ; day:06 ; month:03 ; year:2023 ; extent:11
Advanced functional materials ; (06.03.2023) (gesamt 11)

Creator
Yimyai, Tiwa
Crespy, Daniel
Pena‐Francesch, Abdon

DOI
10.1002/adfm.202213717
URN
urn:nbn:de:101:1-2023030714180212054847
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:50 AM CEST

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