The use of sustainable, multifunctional inks in printed electronics has great utility for various devices, particularly at soft biointerfaces. Here, we discuss the development of a multifunctional nanocomposite ink, termed PS-IO-N ink, designed for applications, principally in the field of flexible and bio-electronics. The ink combines electrically conductive properties with magnetic capabilities, offering a dual-functionality that facilitates both physical and electrical connections. The PSION ink is composed of two main components: poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), a conducting polymer with favorable biocompatibility, and iron oxide (Fe₃O₄) nanoparticles known for their ferromagnetic properties. The ink is formulated as a stable water dispersion, making it eco-friendly and suitable for aqueous processing. Key findings include the optimization of components to balance electrical conductivity and magnetic behavior, allowing the ink to function as both a physical connector and a conductor. The addition of an adhesion promoter enhances the ink's water stability and surface adhesion. The ink's applicability is demonstrated in various scenarios, such as forming flexible circuits on substrates like paper and silk fibroin, creating temporary magnetic connections for electronic devices, and enabling stable connections to sensors for parameter monitoring. The PSION ink provides an innovative solution for flexible and bioelectronic applications, offering the potential for reversible, adaptable connections in both dry and wet environments.

在印刷电子产品中使用可持续的多功能墨水对于各种设备具有很大的实用性，特别是在软生物界面上。在这里，我们讨论了一种多功能纳米复合材料墨水（称为 PS-IO-N 墨水）的开发，该墨水专为主要在柔性和生物电子领域的应用而设计。该墨水将导电特性与磁性功能相结合，提供了促进物理和电气连接的双重功能。PSION墨水由两种主要成分组成：聚(3,4-乙撑二氧噻吩):聚(苯乙烯磺酸)(PEDOT:PSS)，一种具有良好生物相容性的导电聚合物，以及氧化铁(Fe 3 O 4 )纳米颗粒，因其具有良好的_{生物相容性}而_闻名。铁磁特性。该油墨被配制为稳定的水分散体，使其环保且适合水性加工。主要发现包括优化组件以平衡导电性和磁性行为，使墨水既充当物理连接器又充当导体。添加附着力促进剂可增强油墨的水稳定性和表面附着力。该墨水的适用性在各种场景中得到了证明，例如在纸张和丝素蛋白等基材上形成柔性电路，为电子设备创建临时磁性连接，以及实现与传感器的稳定连接以进行参数监控。PSION 墨水为柔性和生物电子应用提供了创新的解决方案，为干燥和潮湿环境中的可逆、适应性连接提供了潜力。