Multiscale Humidity Visualization by Environmentally Sensitive Fluorescent Molecular Rotors
Multiscale Humidity Visualization by Environmentally Sensitive Fluorescent Molecular Rotors
复制标题
通过环境敏感荧光分子转子进行多尺度湿度可视化
DOI：
10.1002/adma.201703900
复制
发表时间：
2017-12-13
影响因子：
29.4
通讯作者：
Tang, Ben Zhong
中科院分区：
文献类型：
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作者：
Cheng, Yanhua;Wang, Jianguo;Tang, Ben Zhong
建筑湿度传感器具有多种配置的兼容性，并测量空间和时间的湿度梯度的能力的特点是高度集成的电子和可穿戴监测系统的极大兴趣。在此，提出了一种基于荧光成像的视觉传感方法，通过将聚集诱导（AIE）活性分子转子组装成水分捕获网络;所得的AIE湿度传感器与不同的应用兼容，具有可调的几何形状和理想的架构。基于AIE活性分子转子的扭曲分子内电荷转移效应，相对湿度（RH）的不可见信息被转换成不同的荧光颜色，使得能够通过肉眼直接观察。由此产生的AIE湿度传感器表现出优异的性能，在良好的灵敏度，精确的定量测量，高时空分辨率，和快速的响应/恢复时间。它们的多尺度应用，如区域环境相对湿度检测，内部湿度映射，和敏感的人体湿度传感。所提出的湿度可视化策略可以为开发用于各种应用的湿度传感器提供新的见解。
Building humidity sensors possessing the features of diverse-configuration compatibility, and capability of measurement of spatial and temporal humidity gradients is of great interest for highly integrated electronics and wearable monitoring systems. Herein, a visual sensing approach based on fluorescent imaging is presented, by assembling aggregation-inducedemission (AIE)-active molecular rotors into a moisture-captured network; the resulting AIE humidity sensors are compatible with diverse applications, having tunable geometries and desirable architectures. The invisible information of relative humidity (RH) is transformed into different fluorescence colors that enable direct observation by the naked eyes based on the twisted intramolecular charge-transfer effect of the AIE-active molecular rotors. The resulting AIE humidity sensors show excellent performance in terms of good sensitivity, precise quantitative measurement, high spatial-temporal resolution, and fast response/recovery time. Their multiscale applications, such as regional environmental RH detection, internal humidity mapping, and sensitive human-body humidity sensing are demonstrated. The proposed humidity visualization strategy may provide a new insight to develop humidity sensors for various applications.