Humidity Sensors: Multiscale Humidity Visualization by Environmentally Sensitive Fluorescent Molecular Rotors (Adv. Mater. 46/2017)

In article number 1703900, Ben Zhong Tang and co-workers present a visual-sensing approach based on fluorescence imaging by assembling aggregation-induced emission (AIE)-active molecular rotors into a moisture-captured network; the resulting AIE humidity sensors are compatible with diverse applications given their tunable geometries and desirable architectures. The invisible information of relative humidity (RH) is transformed into different fluorescence colors, which enables direct observation by the naked eye. Multiscale applications, such as regional environmental RH detection, internal humidity mapping, and sensitive human-body humidity sensing, are demonstrated.

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