An international research team has developed an innovative sensor material using a conductive two-dimensional metal-organic framework (2D-cMOF) based on copper and hexaiminobenzene for ultrasensitive detection of nitric oxide (NO). NO is significant in environmental monitoring and as a medical biomarker. The material exhibits high sensitivity, selectivity, and reusability, detecting NO at room temperature with a detection limit of 1.8 ppb and remaining effective across multiple cycles. The copper ions play a crucial role in reversible NO binding, which is enhanced by the material’s high crystallinity. The sensor operates efficiently at low voltage and maintains accuracy even in the presence of moisture or other gases. This breakthrough could advance applications in air quality monitoring and medical diagnostics.
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