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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 quenching and competitive adsorption between Fe³⁺ and 1 lead to the quenching effect of 1.

SUBMITTER: Huang YQ

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

REPOSITORIES: biostudies-literature

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

Huang Yong-Qing YQ Chen Huai-Ying HY Wang Yang Y Ren Yong-He YH Li Zong-Ge ZG Li Lu-Chao LC Wang Yan Y

RSC advances 20180612 38

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 ...[more]

PMID: 35539913

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