A channel-structured Eu-based metal-organic framework with a zwitterionic ligand for selectively sensing Fe³⁺ ions.

ABSTRACT: A novel Eu-based MOF [Eu(IMS1)₂]Cl·4H₂O (1) was successfully constructed based on a semi-rigid zwitterionic 1,3-bis(4-carboxylbenzyl)-imidazolium (IMS1) ligand, featuring a 3-fold interpenetrating dia net structure with a point symbol of 6⁶ and charged permanent micropores. Considering its excellent luminescent property as well as thermal and chemical stability, complex 1 was explored as a potential sensor for detecting Fe³⁺ ions. The results show that complex 1 has a high sensitivity and selectivity for Fe³⁺ based on a 'turn-off' effect, for which the electrostatic interaction between Fe³⁺ ions and the inner surface of the micropores may play a critical role. The fluorescence quenching mechanism reveals that dynamic quenchi

SUBMITTER: Huang YQ 

PROVIDER: S-EPMC9080914 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature