Engineering a NO‐Regulated Nanofluidic Sensor through the Cyclization Reaction Strategy

Abstract Nitric oxide (NO) is known to be a secondary in vivo signaling agent, demonstrating various biological functions through regulating ion flux in channels. Considering the crucial role of NO in vivo, herein, a biomimetic NO‐regulated nanofluidic sensor has been fabricated through a cyclization reaction strategy. This nanofluidic sensor exhibited a promising NO selectivity, sensitivity, and non‐interference performance in complex matrices. Thus, such a NO‐driven nanosensor will be meaningful for scientific researchers to grasp the in vivo functions of NO.