Isomer recognition by dynamic guest-adaptive ligand rotation in a metal-organic framework with local flexibility.

ABSTRACT: Local flexibility in a metal-organic framework is intriguing for reconstructing a microenvironment to distinguish different guest molecules by emphasizing their differences. Herein, guest-adaptive flexibility is observed in a metal-organic framework for efficiently discriminating aromatic isomers. Microcrystal electron diffraction directly reveals that the anthracene rings can rotate around the single bond with the adsorption of guest molecules. Disorder transformation of the ligand enables the preferential adsorption of ethylbenzene over other xylene isomers. Especially, a coated capillary column combining single/multi-component adsorption confirms a unique separation order of ethylbenzene > p-xylene > m-xylene > o-xylene with excellent selectivities, which has not be

SUBMITTER: Zhao YJ 

PROVIDER: S-EPMC9580480 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature