Journal
NANOMATERIALS
Volume 12, Issue 24, Pages -Publisher
MDPI
DOI: 10.3390/nano12244480
Keywords
metal-organic framework; ascorbic acid; detection; europium; photoluminescence
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Funding
- University of Wroclaw [DOT-BWU-72/2022]
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Ascorbic acid is an important biomolecule that affects the symptoms of many diseases. This study reports a metal-organic framework based on Cu2+ and Eu3+ ions, which can detect ascorbic acid in aqueous media.
Ascorbic acid (AA) is an important biomolecule, the deficiency or maladjustment of which is associated with the symptoms of many diseases (e.g., cardiovascular disease or cancer). Therefore, there is a need to develop a fluorescent probe capable of detecting AA in aqueous media. Here, we report the synthesis, structural, and spectroscopic characterization (by means of, e.g., XRD, XPS, IR and Raman spectroscopy, TG, SEM, and EDS analyses), as well as the photoluminescent properties of a metal-organic framework (MOF) based on Cu2+ and Eu3+ ions. The ion-exchange process of the extraframework cation in anionic Cu-based MOF is proposed as an appropriate strategy to obtain a new material with a nondisturbed structure and a sensitivity to interaction with AA. Accordingly, a novel Eu[Cu-3(mu(3)-OH)(mu(3)-4-carboxypyrazolato)(3)] compound for the selective optical detection of AA with a short detection time of 5 min is described.
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