Zhao Li, Wang Xinru, Feng Xianyao, Yang Wenhua, Wang Zhenye, Zhang Jinwei, Zhang Liyuan, You Yaohui
College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641112, China; Sichuan Science and Technology Resources Sharing Service Platform of Special Agricultural Resources in Tuojiang River Basin, Neijiang 641112, China; Key Laboratory of Fruit Waste Treatment and Resource Recycling of the Provincial Higher Learning Institutes, Neijiang 641112, China.
College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641112, China.
J Colloid Interface Sci. 2025 Feb 15;680(Pt A):795-808. doi: 10.1016/j.jcis.2024.11.045. Epub 2024 Nov 10.
Conductive hydrogels are regarded as ideal candidates for the application of flexible sensors owing to their excellent flexibility, portability and conductivity. However, it is still challenging and meaningful to prepare multifunctional (self-healing, adhesion, anti-freezing, biocompatibility, antibacterial and conductivity properties) and multi-mode sensing hydrogel-based sensors. Herein, we developed an environmentally stable and multi-functional conductive organogel via dynamic crosslinks based on biomass materials gelatin, black wattle bark tannin and PVA in the propylene glycol/water binary solvent system. Thanks to the dynamic interactions in the system, the good mechanical strength and self-healing performance of the obtained organogel are simultaneously realized. Meanwhile, the organogel integrates many crucial properties such as adhesion, environmental stability (anti-freezing and water retention), biocompatibility, antibacterial behavior and conductivity capacity. Significantly, the organogel can be assembled as three-mode sensors for strain, bioelectricity and temperature sensing. This three-mode sensor can effectively monitor human health data, resulting in providing supplement human health information and conditions. This work displays an interesting approach to construct an intelligent multi-functional conductive biomass organogel based multi-mode flexible sensors.
由于具有出色的柔韧性、便携性和导电性，导电水凝胶被视为柔性传感器应用的理想候选材料。然而，制备具有多功能（自愈合、粘附、抗冻、生物相容性、抗菌和导电性能）和多模式传感的水凝胶基传感器仍然具有挑战性且意义重大。在此，我们基于生物质材料明胶、黑荆树皮单宁和聚乙烯醇，在丙二醇/水二元溶剂体系中通过动态交联制备了一种环境稳定的多功能导电有机凝胶。得益于体系中的动态相互作用，所制备的有机凝胶同时具备良好的机械强度和自愈合性能。同时，该有机凝胶还集成了许多关键特性，如粘附性、环境稳定性（抗冻和保水）、生物相容性、抗菌性能和导电能力。值得注意的是，该有机凝胶可组装成用于应变、生物电和温度传感的三模式传感器。这种三模式传感器能够有效地监测人体健康数据，从而为补充人体健康信息和状况提供支持。这项工作展示了一种构建基于智能多功能导电生物质有机凝胶的多模式柔性传感器的有趣方法。
