Ultra-Sensitive Pyerene Based of Room Temperature (RT) Organic Small Molecule Ammonia Detecting Sensor

For environmental and human health reasons, developing an efficient organic small molecule sensor (OSMS) with rapid, sensitive, and selective sensing of ammonia (NH3) is critical. This paper describes a Py-based gas sensor for ammonia (NH3) detection and sensing at RT. Spectroscopic and structural characterizations validated the effective production of the Py. The Py-based constructed device structure sensor displayed remarkable detection sensitivity for NH3 at concentrations as low as 10 ppm, The appealing sensing properties of NH3 at room temperature are owing to H2O pre-doping in Py and NH3 interaction to terminal electron-rich ester groups on pyerene molecule. In contrast to earlier reported organic conducting materials sensor demonstrated very long-term stability and high sensitivity to NH3, as well as surprising selectivity towards ammonia when compared to formaldehyde, methanol, ethanol, and benzene. The Py-based sensor demonstrated good ammonia detection capability, with maximum 60% response which could be helpful in real world applications.