Formaldehyde recognition through aminal formation in a luminescent metal-organic framework.
Jia-Li LiXiao XiongDong LuoYu-Bai WeiWeigang LuDan LiPublished in: Chemical communications (Cambridge, England) (2022)
Two isostructural pillar-layer MOFs (JNU-105 and JNU-105-(NH2)2) have been successfully synthesized. JNU-105-(NH2)2 exhibits a red-shifted luminescence "turn on" for formaldehyde without the interference from other VOCs and a detection limit of 1.87 ppb. In situ single-crystal transformation studies confirm the aminal formation on the pillar linker, which was attributed to the exclusive luminescence response toward formaldehyde.