Intelligent electronic textiles have important application value in the field of wearable electronics due to their unique structure, flexibility, and breathability. However, the currently reported electronic textiles are still challenged by issues such as their biocompatibility, photothermal conversion, and electromagnetic wave contamination. Herein, a multifunctional biomass-based conductive coating was developed using natural carboxymethyl starch (CMS), dopamine and polypyrrole (PPy) and then further employed for constructing multifunctional intelligent electronic textiles. The prepared textiles had excellent water resistance, breathability, antioxidant and antibacterial activities, electromagnetic shielding (33 dB) as well as photothermal conversion performance, and stability. Notably, the fabricated textile could be heated from room temperature to 55 °C within 10 s under infrared radiation, and then the surface temperature of the textile could be reduced to 40 °C ( = 42.05 s) within 20 s, holding great significance for research on new wearable photothermal textiles. Furthermore, the textile was utilized as a skin strain sensor, demonstrating high sensitivity to temperature, strain, photothermal and bioelectric signals and motion detection. It could monitor the physiological signal, motion control, and body temperature change of the human body in real time, offering significant potential to be applicable to integrated wearable intelligent textiles and skin bioelectronics.
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