Fabricating a super stable luminescent chemosensor with multi-stimuli-response to metal ions and small organic molecules through turn-on and turn-off effects

Abstract

A luminescent Ln-MOF (1) with a combination of exceptionally high thermal, air and chemical stabilities has been synthesized. The multi-stimuli-responsive luminescence of 1 makes it a multifunctional chemosensor for metal ions and small organic molecules, which can selectively detect Cd²⁺/Mn²⁺ ions as well as methanol/diethyl ether solvent molecules through turn-on/turn-off effects. Compound 1 can also be utilized as a luminescent probe for diethyl ether vapor and the material can be conveniently reactivated for regeneration.