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• W4221051219 abstract "Herein, we report a new phenolphthalein appended Schiff base (PASB) as reversible fluorescent sensor for the detection of pyrophosphate (PPi) ions through the metal displacement mechanism. PASB showed sensing exclusively toward Al3+ ions in DMF/H2O (v/v = 1/4, pH 5.5) solution, which resulted in a significant fluorescence enhancement at 540 nm. The 1: 2 binding stoichiometry for the complex formation between PASB and Al3+ was confirmed by Job's plot and mass spectroscopic studies. Moreover, a solution of the in situ formed PASB-Al3+ complex displayed a high selectivity to PPi. The addition of PPi to PASB-Al3+ ensemble significantly quenched its fluorescence. Thus, a dual response was established based on Off-On-Off strategy for detection of both Al3+ and PPi. The detection limit is 5.86 nM and 26 nM for Al3+ and PPi, respectively. On this basis, we use PASB to detect Al3+ in food samples. Furthermore, PASB was successfully applicable to detect Al3+ and PPi for intracellular imaging in Human liver cancer cells." @default.
• W4221051219 created "2022-04-03" @default.
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• W4221051219 date "2022-08-01" @default.
• W4221051219 modified "2023-10-18" @default.
• W4221051219 title "A novel phenolphthalein-based fluorescent chemosensor for pyrophosphate detection via an Al3+ displacement approach in real samples and living cells" @default.
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• W4221051219 doi "https://doi.org/10.1016/j.saa.2022.121174" @default.
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