Acidity and Cd2+ fluorescent sensing and selective CO2 adsorption by a water-stable Eu-MOF

Wei-Ming Liao; Mei-Juan Wei; Jun-Ting Mo; Peng-Yan Fu; Ya-Nan Fan; Mei Pan; Cheng-Yong Su

doi:10.1039/c9dt00539k

Acidity and Cd²⁺ fluorescent sensing and selective CO₂ adsorption by a water-stable Eu-MOF

Dalton Trans. 2019 Apr 14;48(14):4489-4494. doi: 10.1039/c9dt00539k. Epub 2019 Mar 12.

Authors

Wei-Ming Liao¹, Mei-Juan Wei², Jun-Ting Mo², Peng-Yan Fu², Ya-Nan Fan², Mei Pan², Cheng-Yong Su²

Affiliations

¹ MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China. [email protected] and School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
² MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China. [email protected].

PMID: 30860246
DOI: 10.1039/c9dt00539k

Abstract

A new Eu-MOF was designed from an amino-functionalized ligand and Eu(iii) ions under solvothermal conditions. It is a highly porous, water-stable, and luminescent material, exhibiting pH sensing in the acidic range of pH = 7-3 with selective detection for Cd²⁺ by an enhanced fluorescence of ∼23-fold against a series of metal ions. Gas adsorption performance shows that Eu-MOF exhibits a high CO₂/N₂ (15/85) selectivity of 109.4 at 273 K and 1 atm. This performance was superior to that of most reported Ln-MOFs owing to its appropriate pore size, dipole-dipole interaction and donor-acceptor Lewis affinities.