An Antidehydration Hydrogel Based on Zwitterionic Oligomers for Bioelectronic Interfacing

© 2023 Wiley-VCH GmbH..

Hydrogels are ideal interfacing materials for on-skin healthcare devices, yet their susceptibility to dehydration hinders their practical use. While incorporating hygroscopic metal salts can prevent dehydration and maintain ionic conductivity, concerns arise regarding metal toxicity due to the passage of small ions through the skin barrier. Herein, an antidehydration hydrogel enabled by the incorporation of zwitterionic oligomers into its network is reported. This hydrogel exhibits exceptional water retention properties, maintaining ≈88% of its weight at 40% relative humidity, 25 °C for 50 days and about 84% after being heated at 50 °C for 3 h. Crucially, the molecular weight design of the embedded oligomers prevents their penetration into the epidermis, as evidenced by experimental and molecular simulation results. The hydrogel allows stable signal acquisition in electrophysiological monitoring of humans and plants under low-humidity conditions. This research provides a promising strategy for the development of epidermis-safe and biocompatible antidehydration hydrogel interfaces for on-skin devices.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:36

Enthalten in:

Advanced materials (Deerfield Beach, Fla.) - 36(2024), 8 vom: 01. Feb., Seite e2311255

Sprache:

Englisch

Beteiligte Personen:

He, Ke [VerfasserIn]
Cai, Pingqiang [VerfasserIn]
Ji, Shaobo [VerfasserIn]
Tang, Zihan [VerfasserIn]
Fang, Zhou [VerfasserIn]
Li, Wenlong [VerfasserIn]
Yu, Jing [VerfasserIn]
Su, Jiangtao [VerfasserIn]
Luo, Yifei [VerfasserIn]
Zhang, Feilong [VerfasserIn]
Wang, Ting [VerfasserIn]
Wang, Ming [VerfasserIn]
Wan, Changjin [VerfasserIn]
Pan, Liang [VerfasserIn]
Ji, Baohua [VerfasserIn]
Li, Dechang [VerfasserIn]
Chen, Xiaodong [VerfasserIn]

Links:

Volltext

Themen:

Antidehydration
Bioelectronic interface
Hydrogel
Hydrogels
Journal Article
Salts
Skin safety
Zwitterionic oligomer

Anmerkungen:

Date Completed 23.02.2024

Date Revised 23.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/adma.202311255

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM365212792