可穿戴电化学传感器可以实现非侵入式和连续的生理监测, 适用于日常健康管理和慢性疾病早期诊断。织物基可穿戴传感器因其具有优异的柔韧性、透气性以及与皮肤无缝贴合的特性, 引起了人们极大的兴趣。然而, 在织物上纤维上可控制备传感活性材料是具有挑战性的。在这项研究中, 通过结合织物内光刻和可控电沉积技术, 在织物纤维表面可控制备聚苯胺传感材料。这种方法能够在保证聚苯胺高性能pH传感的前提下, 维持织物的孔隙结构。实验结果表明, 沉积15min的聚苯胺pH传感器灵敏度为57. 87mV/pH, 接近灵敏度理论极限。此外, 所制备的pH传感器还表现出优异的稳定性, 包括再现性、抗干扰性和长时间稳定性。该方法为制备高性能的织物基可穿戴传感器提供了一个新的视角, 所制备的聚苯胺pH传感器在皮肤健康监测和可穿戴生物医学应用中具有重要的应用前景。

Wearable electrochemical sensors enable non-invasive and continuous physiological monitoring for daily health management and early diagnosis of chronic diseases. Fabric-based wearable sensors have attracted great interest due to their excellent flexibility, breathability, and seamless fit to the skin. However, controllable preparation of sensing active materials on fibers on fabrics is challenging. In this study, polyaniline sensing materials were prepared controllably on the surface of fabric fibers by combining in-fabric photolithography and controlled electrodeposition techniques. This method was able to ensure the high-performance pH sensing of polyaniline while maintaining the pore structure of the fabric. The experimental results show that the sensitivity of the polyaniline pH sensor deposited for 15min is 57. 87mV/pH, which is closest to the theoretical limit of sensitivity. In addition, the prepared pH sensors exhibited excellent stability, including reproducibility, anti-interference and long-time stability. The method provides a new perspective for the preparation of high-performance fabric-based wearable sensors, and the prepared polyaniline pH sensors have important application prospects in skin health monitoring and wearable biomedical applications.