Biodegradable polymers used to develop eco-friendly, high-performance gas sensors

Air pollutants like nitrogen dioxide (NO2), primarily produced during fossil fuel combustion, pose a serious concern for human health, contributing to respiratory diseases like pulmonary edema, bronchitis, and asthma. Effective air-quality monitoring therefore requires portable gas sensors that offer high sensitivity, selectivity, and long-term stability. Among existing technologies, organic field-effect transistors (OFETs) are promising for highly sensitive portable sensors with their lightweight, flexible, and simple-to-fabricate structure.