湿度
相对湿度
吸附
解吸
材料科学
水蒸气
堆积
呼吸监测
灵敏度(控制系统)
纳米技术
分子间力
分子
化学工程
化学
物理化学
热力学
有机化学
电子工程
工程类
内科学
物理
医学
呼吸系统
作者
Aohan Mei,Wen Chen,Zifan Yang,Min Zhou,Wei Jun Jin,Shuang Yang,Keqiang Chen,Yueli Liu
标识
DOI:10.1002/ange.202301440
摘要
Abstract Recently, abundant active materials are developed to achieve the wearable detection of human body humidity. However, the limited response signal and sensitivity restrict further application due to their moderate affinity to water. Herein, we propose a flexible COF‐5 film synthesized by a brief vapor‐assisted method at room temperature. Intermediates are calculated by DFT simulation to investigate the interaction between COF‐5 and water. The adsorption and desorption of water molecule result in a reversible deformation of COF layers while creating new conductive path by π–π stacking. The as‐prepared COF‐5 films are applied to the flexible humidity sensors, exhibiting a resistance change in 4 orders of magnitude with remarkable linear relation between log function of resistance and relative humidity (RH) in 11 %–98 % RH range. Applications including respiratory monitoring and non‐contact switch are tested, providing a promising prospect for the detection of human body humidity.
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