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Recyclable europium functionalized metal-organic fluorescent probe for detection of tryptophan in biological fluids and food products
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DOI：10.1016/j.aca.2021.338897.png)
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Abstract
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An europium functionalized metal-organic fluorescent probe, Eu3+@UiO-66-FDC was constructed by post-synthetic modification through coordination interactions. Eu3+@UiO-66-FDC displayed high selectivity and sensitivity toward Tryptophan (Trp) among all the 20 natural amino acids and other general compounds in food and biological samples, with a wide linear concentration range (0-1000 mu M), low detection limit (0.29 mu M), and a rapid response (< 1 min). Besides, this probe was utilized to detect Trp in rabbit blood serum and milk samples with good recoveries, which were verified by high-performance liquid chromatography (HPLC). Notably, this fluorescent probe proved to be a recyclable material. Hence, this work provides a reliable and recyclable fluorescent probe applicable toward the detection of Trp in biological fluids and/or food products. (c) 2021 Elsevier B.V. All rights reserved.
Keywords:
Metal-organic framework
Recyclablefluorescent probe
Tryptophan
Eu < sup > 3+<
sup > -functionalized
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