Respiration monitoring is important for evaluating human health. The human exhaled gas is always accompanied by high humidity, so humidity sensors are promising for respiration monitoring. Importantly, a fast response to humidity change and good stability under high humidities must be guaranteed for the utilized humidity sensor. In order to achieve fast response and good stability, humidity sensors based on stable polyelectrolytes were prepared via in-situ thiol-ene click polymerization. This method provides a novel way for preparing high quality humidity sensors.
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