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Acidity and Cd fluorescent sensing and selective CO adsorption by a water-stable Eu-MOF

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 Cd 2+ by an enhanced fluorescence of ∼23-f...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2019-04, Vol.48 (14), p.4489-4494
Main Authors: Liao, Wei-Ming, Wei, Mei-Juan, Mo, Jun-Ting, Fu, Peng-Yan, Fan, Ya-Nan, Pan, Mei, Su, Cheng-Yong
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Summary: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 Cd 2+ by an enhanced fluorescence of ∼23-fold against a series of metal ions. Gas adsorption performance shows that Eu-MOF exhibits a high CO 2 /N 2 (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. A new luminescent Eu-MOF from an amino-group modified tetracarboxylic acid ligand was designed, which could perform as an efficient pH acidity and Cd 2+ PL sensor and CO 2 selector.
ISSN:1477-9226
1477-9234
DOI:10.1039/c9dt00539k