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Stretchable Luminescent Perovskite-Polymer Hydrogels for Visual-Digital Wearable Strain Sensor Textiles

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Abstract

The integration of a display function with wearable interactive sensors offers a promising way to synchronously detect physiological signals and visualize pressure/stimuli. However, combining these two functions in a strain sensor textile is a longstanding challenge due to the physical separation of sensors and display units. Here, a water-stable luminescent perovskite hydrogel (emission band approximately 25 nm) is constructed by blending as-prepared CsPbBr3@PbBr(OH) with stretchable polyacrylamide (PAM) hydrogels. The facile introduction of CsPbBr3@PbBr(OH) endows the hydrogels with excellent optical properties and a high mechanical strength of 51.3 kPa at a fracture strain of 740%. Interestingly, the resulting hydrogels retain bright green fluorescence under conditions including water, ultraviolet light, and extensive stretching (> 700%). As a proof-of-concept, a novel wearable stretchable strain sensor textile based on these hydrogels is developed, and it displays visual-digital synergetic strain detection ability. It can perceive various motions on the human body in real time with electronic output signals from changes in resistance and simultaneously readable optical output signals, whether on land or underwater. This work provides a meaningful guide to rationally design perovskite hydrogels and accelerates the development of wearable visual-digital strain sensor textiles.

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The data that support the fndings of this study are available from the corresponding authors upon request.

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Acknowledgements

This work was supported by the Natural Science Foundation of Jiangsu Province (BK20220288), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (Start-up grant E1552102). This work was supported by the Singapore Ministry of Education Academic Research Fund Tier 2 (MOE2019-T2-2-127 and MOE-T2EP50120-0002), and A*STAR under AME IRG (A2083c0062). This work was supported by A*STAR under its IAF-ICP Programme I2001E0067 and the Schaeffler Hub for Advanced Research at NTU. This work was also supported by NTU-PSL Joint Lab collaboration.

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  1. Xinxin Li and Long Chen are contributed equally to the work.

Authors and Affiliations

  1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

    Xinxin Li, Long Chen, Shuanglong Yuan, Hua Tong, Qilin Cheng & Huidan Zeng

  2. Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China

    Long Chen & Qichong Zhang

  3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore

    Lei Wei

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Li, X., Chen, L., Yuan, S. et al. Stretchable Luminescent Perovskite-Polymer Hydrogels for Visual-Digital Wearable Strain Sensor Textiles. Adv. Fiber Mater. 5, 1671–1684 (2023). https://doi.org/10.1007/s42765-023-00302-7

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