Reaction-Based Azide Gas Sensing with Tailored Ionic Liquids Measured by Quartz Crystal Microbalance

On the basis of the strain-promoted [3 + 2] cycloaddition reaction performed at ambient temperature, a label-free, online, and chemospecific gas-phase measurement of organic azides in real time was efficiently achieved on QCM chips thin-coated with tailored ionic liquid TIL 1.