Selective, Fast-Response, and Regenerable Metal-Organic Framework for Sampling Excess Fluoride Levels in Drinking Water.

Ebrahim FM; Nguyen TN; Shyshkanov S; Gładysiak A; Favre P; Zacharia A; Itskos G; Dyson PJ; Stylianou KC

doi:10.1021/jacs.8b11907

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Journal article

Selective, Fast-Response, and Regenerable Metal-Organic Framework for Sampling Excess Fluoride Levels in Drinking Water.

Ebrahim FM Laboratory of Molecular Simulation (LSMO) and ‡Electronic Workshop, Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL Valais) , Rue de l'Industrie 17 , 1951 Sion , Switzerland.
Nguyen TN Laboratory of Molecular Simulation (LSMO) and ‡Electronic Workshop, Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL Valais) , Rue de l'Industrie 17 , 1951 Sion , Switzerland.
Shyshkanov S Laboratory of Molecular Simulation (LSMO) and ‡Electronic Workshop, Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL Valais) , Rue de l'Industrie 17 , 1951 Sion , Switzerland.
Gładysiak A Laboratory of Molecular Simulation (LSMO) and ‡Electronic Workshop, Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL Valais) , Rue de l'Industrie 17 , 1951 Sion , Switzerland.
Favre P Experimental Condensed Matter Physics Laboratory, Department of Physics , University of Cyprus , Nicosia 1678 , Cyprus.
Zacharia A Experimental Condensed Matter Physics Laboratory, Department of Physics , University of Cyprus , Nicosia 1678 , Cyprus.
Itskos G Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland.
Dyson PJ Laboratory of Molecular Simulation (LSMO) and ‡Electronic Workshop, Institut des Sciences et Ingénierie Chimiques (ISIC) , Ecole Polytechnique Fédérale de Lausanne (EPFL Valais) , Rue de l'Industrie 17 , 1951 Sion , Switzerland.
Stylianou KC

2019-02-12

Published in:

Journal of the American Chemical Society. - 2019

English Prolonged consumption of water contaminated with fluoride ions (F-) at concentrations exceeding 1.5 ppm can lead to considerable health implications, particularly in children and developing embryos. With irreversible and potentially severe forms of fluoride (F-) toxicity such as skeletal fluorosis being endemic in at least 25 countries, constructing affordable, remote-access, reliable water-sampling methods for F- contamination is an important goal. In this work, we present a novel lanthanide-based luminescent metal-organic framework, named SION-105, with a boron (B) receptor site whose interactions with F- in aqueous solutions are simultaneously electrostatic and specific in nature because of its carefully designed structural environment. This allows the material to be easily regenerated and used over 10 cycles, setting it apart from most existing molecular and polymeric F- sensors. SION-105 has been combined with a portable prototype sampling device that was designed and built in-house to measure F- concentrations in natural groundwater samples taken from three different countries, with the results showing excellent agreement with ion chromatography analysis.

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