Novel "Turn-On" Fluorescent Probe for Highly Selectively Sensing Fluoride in Aqueous Solution Based on Tb³⁺-Functionalized Metal-Organic Frameworks.

ABSTRACT: A Zr-based metal-organic framework (Zr-MOF) which has free carbonyl groups is synthesized successfully through mix-ligand strategy. Subsequently, Tb³⁺ is encapsulated into a Zr-MOF by postcoordinated modification. The Tb³⁺@Zr-MOF exhibits the characteristic emission of Tb³⁺ because of efficient sensitization through antenna effects. The Tb³⁺@Zr-MOF is further developed as a novel "turn-on" fluorescent probe to detect fluoride ions in aqueous solution. The results show that Tb³⁺@Zr-MOF exhibits excellent selectivity, high stability, low detection limits, and good anti-interference for sensitizing fluoride ions. In addition, the possible sensing mechanism that the induced luminescence properties may be attributed to Lewis acid-base inter

SUBMITTER: Zheng HY 

PROVIDER: S-EPMC6645131 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature