Wibowo, Anky Fitrian;
Sung, Baeksang;
Kim, Jung Ha;
Han, Sora;
Jang, Eun-Jeong;
Entifar, Siti Aisyah Nurmaulia;
Sembiring, Yulia Shara Br;
... Kim, Yong Hyun; + view all
(2025)
Tannic Acid-Enhanced Cellulose/PEDOT:PSS Films Exhibiting Low Electrical Hysteresis, UV Blocking, and Antibacterial Properties for Wearable Sensing.
ACS Sustainable Chemistry & Engineering
, 13
(31)
pp. 12523-12532.
10.1021/acssuschemeng.5c03651.
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Abstract
Wearable sensors for human motion monitoring demand soft, biocompatible materials with low mechanical and electrical hysteresis under repeated strain and environmental exposure. Here, we report a carboxymethyl cellulose (CMC)/tannic acid (TAC) hybrid film engineered for enhanced mechanical compliance, environmental resilience, and bifunctionality. Tannic acid acts as a natural cross-linker, conferring skin-like elasticity, UV shielding, and antibacterial properties. Integration of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) yields a conductive film with exceptional stretchability (up to 150%), low electrical hysteresis (∼4.86% at 100% strain), and high strain sensitivity (gauge factor ≈ 2.18 at 150%). The film enables accurate detection of diverse biomechanical signals, including joint movement, facial muscle activity, respiration, and laryngeal vibrations. UV absorption was significantly enhanced (1.58 A.U. at 350 nm; 4.39 A.U. at 330 nm), and bacterial growth was suppressed by 76%, addressing concerns of hygiene and device degradation in humid conditions. This multifunctional TAC@PEDOT:PSS hybrid presents a promising strategy for next-generation on-skin electronics, uniting mechanical robustness, electrical stability, and skin compatibility in a single platform.
| Type: | Article |
|---|---|
| Title: | Tannic Acid-Enhanced Cellulose/PEDOT:PSS Films Exhibiting Low Electrical Hysteresis, UV Blocking, and Antibacterial Properties for Wearable Sensing |
| DOI: | 10.1021/acssuschemeng.5c03651 |
| Publisher version: | https://doi.org/10.1021/acssuschemeng.5c03651 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Conductive biopolymer; strain sensor; skin-interfacing electronics; natural cross-linker; UV shielding |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10214059 |
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