Abstract：
Numerous applications require low humidity sensors that not only sensitive but also stable, small hysteresis, high resolution and fast response. However, most reported low humidity sensors cannot possess these properties at the same time. In this work, inspired by sea urchin, we developed an ionic liquid (IL) modified metal organic framework (UiO-66) based low humidity sensor. Owing to the synergistic effect of the hydrophilicity and ionic conductivity of IL and the steric hindrance effects of UiO-66, the optimized low humidity sensor simultaneously exhibits high response (47.5), small hysteresis (0.3 % RH), ultrafast response speed (0.2 s), high resolution (1 % RH), and excellent long-term stability (>120 days). In particular, the sensor has been proved to have potential applications in visual humidity detection and water source location. This work provides a preliminary design principle that will contribute to the preparation of high-performance low humidity sensing materials.
摘要：
许多应用需要低湿度传感器，不仅敏感，而且稳定，小磁滞，高分辨率和快速响应。然而,大多数报道的低湿度传感器不能同时具有这些特性。在这项工作中,灵感来自海胆,我们开发了一种基于离子液体（IL）修饰的金属有机骨架（UiO-66）的低湿度传感器。由于IL的亲水性和离子电导率的协同作用和UiO-66的空间位阻效应，优化的低湿度传感器同时表现出高响应（47.5），小滞后（0.3%RH），超快响应速度(0.2s)，高分辨率(1%RH),和优异的长期稳定性（>120天）。特别是,该传感器已被证明在视觉湿度检测和水源定位方面具有潜在的应用前景。这项工作提供了一个初步设计原理，将有助于制备高性能的低湿度传感材料。
