Fluorescence Turn-On/Off Responses of In (III)-MOF to Short-Chain Perfluorocarboxylic Acids

Abstract Short-chain perfluorocarboxylic acids (PFCAs) are a class of persistent organic pollutants that widely used as substitutes for long-chain PFCAs. However, they also pose non-negligible risk to ecosystems. In this study, we demonstrated fluorescent metal–organic framework (MOF) (named V-101) constructed from 3+ and an aromatic-rich tetratopic carboxylate ligand 5-[2,6-bis (4-carboxyphenyl) pyridin-4-yl] isophthalic acid (H 4 BCPIA) exhibited highly efficient turn-off turn-on fluorescence responses toward five short-chain PFCAs in water methanol, respectively. The limits detection V-101 down μg/L level, it showed good anti-interference abilities the presence common metal ions. major mechanisms associated with were molecular collisions interactions between This work demonstrates structure variety MOFs imparts them potential pollution control.