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A dual-crosslinking strategy for building photoluminescence hydrogel with toughness, self-recovery, and two-color tunability

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Abstract

The development of tenacity photoluminescent (PL) hydrogels is very great significance to promote the application of optical technology in hydrogel. Herein, we report a high-toughness PL hydrogel that combines synthetic hydrophilic lanthanide complex (LCs) and tannic acid (TA) with polyvinyl alcohol (PVA) by frozen-thawing. The resulting hydrogel has high mechanical strength (1194.46-kPa tensile strength, 1266.17-kJ m−3 toughness energy, 1915.58-kPa compressive strength, and 269.79-kJ m−3 energy dissipation at 80% compression), excellent self-recover and anti-fatigue performance, good photoluminescence, and switchable functions under UV light, showing red (254 nm) and green (365 nm), respectively. The design strategy offers a new approach for the preparation of multifunctional and tenacity PL hydrogels.

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Funding

This work received financial support from the National Natural Science Foundation of China (41576098, 81773483), the Science and Technology Department of Zhejiang Province of China (2016C33176, LGF18B070002), the Natural Science Foundation of Ningbo (2017A610231, 2017A610228), and the State Key Laboratory for Quality and Safety of Agro-products (ZS20190101). This research was also sponsored by K.C. Wong Magna Fund in Ningbo University.

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  1. State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, People’s Republic of China

    Yifei Lu, Jia Shao, Sui Wang, Zhiyong Guo & Yufang Hu

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  1. Yifei Lu
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Lu, Y., Shao, J., Wang, S. et al. A dual-crosslinking strategy for building photoluminescence hydrogel with toughness, self-recovery, and two-color tunability. Colloid Polym Sci 298, 1715–1727 (2020). https://doi.org/10.1007/s00396-020-04756-8

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