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• W3044798364 endingPage "127659" @default.
• W3044798364 startingPage "127659" @default.
• W3044798364 abstract "• A novel phenolphthalein-based fluorogenic ''turn-on'' sensor for Al 3+ was developed. • The sensing platform demonstrated a high selectivity and sensitivity. • Chemo-sensor HMBP has low detection limit (0.113 µM). • Studies in real samples showed its value in practical food applications. In this study, 3,3-bis(4-hydroxy-3-((E)-((4-hydroxyphenyl)imino)methyl) phenyl)isobenzofuran-1(3H)-one ( HMBP) was designed as a ‘’turn-on″ fluorogenic chemosensor to detect Al 3+ . Studies were performed in C 2 H 5 OH-HEPES (v/v, 9/1, pH 7.0) media at λ em = 475 nm. The LOD value was found to be 0.113 µM. The stoichiometric ratio of HMBP -Al 3+ was determined as 1:2 by Job's plot and ESI-MS as well as 1 H NMR titration. The binding constant of chemosensor HMBP with Al 3+ from the Benesi-Hildebrand equation was determined to be 1.21 × 10 8 M −1 . The quantum (Φ) yields were obtained as 0.040 and 0.775 for the chemosensor HMBP and HMBP -Al 3+ , respectively. The response of the chemosensor HMBP towards Al 3+ was attributed to the strategies of blocking the photo-induced electron transfer (PET) and C N isomerisation mechanisms. Finally, the sensing of the chemosensor HMBP for the determination of Al 3+ in real food samples, drinking waters and herbal teas, were employed." @default.
• W3044798364 created "2020-07-29" @default.
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• W3044798364 date "2021-02-01" @default.
• W3044798364 modified "2023-10-17" @default.
• W3044798364 title "A novel phenolphthalein-based fluorescent sensor for Al3+ sensing in drinking water and herbal tea samples" @default.
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• W3044798364 doi "https://doi.org/10.1016/j.foodchem.2020.127659" @default.
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