Guest-adaptive molecular sensing in a dynamic 3D covalent organic framework

Flexible framework for detecting vapours

31 May 2023

A flexible molecular framework that can adapt its structure to accommodate various molecules is promising as a sensitive sensor for organic vapours.

Versatile, highly sensitive sensors that can detect organic compounds in the air are needed for various applications, including measuring biomarkers in human breath. Covalent organic frameworks — flexible organic crystals that contain a network of tiny pores — are being explored for such sensors.

Now, a team led by researchers from ShanghaiTech University in China has demonstrated how such a dynamic covalent organic framework can detect and measure various organic vapours.

The fluorescence emitted from the covalent organic framework varies depending on the type and amount of organic vapour present. Furthermore, it responds within one second, has a high sensitivity and can perform measurements in high humidities.

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References

1. Nature Communications 13, 7936 (2022). doi: 10.1038/s41467-022-35674-8