Poly(ionic liquid)s-Based Ionogels for Sensor Applications

Poly(ionic liquid)s-based ionogels (PILs-IGs), composed of ionic liquids solvents and poly(ionic liquid)s gelators, have gained attention as promising materials due to their impressive properties, including good ionic conductivity, remarkable transparency, adjustable mechanical characteristics, and robust stability in challenging environments. There have been notable advancements in developing flexible sensors based on PILs-IGs in recent years. This article provides an overview of the recent progresses in flexible sensor technology using PILs-IGs. After briefly introducing the fundamentals of PILs-IGs, the detailed material design, working principles, and sensing performance are discussed. Future challenges in developing promising PILs-IGs and potential solutions are provided in the conclusion.