Innovative covalently modified Al-MOF as a highly selective fluorescent sensor for Al (III) detection in tap water, human serum, and tea samples,Applied Organometallic Chemistry

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Innovative covalently modified Al-MOF as a highly selective fluorescent sensor for Al (III) detection in tap water, human serum, and tea samples
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2023-11-06 , DOI: 10.1002/aoc.7304
Maram T. Basha ₁ , Ahmed Shahat ₂ , Amr A. Yakout _{1,

3}

Affiliation

Generally, aluminum exposure is not a risk; however, long-term and high-intensity exposure can have a negative impact on health. The ligand-embedded MOF was developed for high sensitivity in the detection and removal of Al (III) ions in aqueous solutions. Novel selective metal–organic framework was synthesized via strong covalent attachment of NH₂-MIL-53(Al) and 2-hydroxy naphthaldehyde (2-HNA) for selective and efficient fluorometric sensing of Al (III) ions. The elemental structure and morphology of the fabricated sensor (2-HNA = N-MIL-53[Al]) were thoroughly evaluated to understand the high selectivity and considerable fluorescence stability in the water. The intensity of the sensor fluorescence increased linearly as the concentration of Al (III) increased from 0.19 to 2.0 ppm with a detection limit of 33.1 ppb (1.23 × 10⁻⁶ M) and 5 s of response time at pH 7. The potential mechanism is discussed. The high selectivity of the developed chemosensor was achieved against various competing environmentally relevant metal ions. Furthermore, Al (III) ions were successfully quantified in tap water, wastewater, human serum, and tea samples. The high precision (RSD percent, 0.009–1.76) and excellent accuracy (recovery percent, 99.96–101.56) of the 2-HNA = N-MIL-53 (Al) sensor indicated that it holds great promise for the ultrafast and highly selective determination of Al (III) ions in wastewaters, with high reproducibility and reversibility.

中文翻译：

创新的共价修饰 Al-MOF 作为高选择性荧光传感器，用于自来水、人血清和茶样品中的 Al (III) 检测

一般来说，铝暴露不会造成风险；然而，长期高强度接触会对健康产生负面影响。配体嵌入的 MOF 专为检测和去除水溶液中的 Al (III) 离子而开发，具有高灵敏度。_{通过 NH 2} -MIL-53(Al) 和 2-羟基萘醛 (2-HNA) 的强共价连接合成了新型选择性金属有机骨架，用于选择性、高效地荧光检测 Al (III) 离子。对所制造的传感器（2-HNA = N-MIL-53[Al]）的元素结构和形态进行了彻底评估，以了解水中的高选择性和相当大的荧光稳定性。随着 Al (III) 浓度从 0.19 增加到 2.0 ppm，传感器荧光强度线性增加，检测限为 33.1 ppb (1.23 × 10 ^-6 M)，pH 7 时响应时间为 5 s。正在讨论。所开发的化学传感器对各种竞争性环境相关金属离子实现了高选择性。此外，还成功定量了自来水、废水、人血清和茶样品中的 Al (III) 离子。2-HNA = N-MIL-53 (Al) 传感器的高精度（RSD 百分比，0.009–1.76）和出色的准确度（回收率，99.96–101.56）表明它在超快速和高选择性测定方面具有广阔的前景废水中 Al (III) 离子的检测，具有高重现性和可逆性。

更新日期：2023-11-06

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