A novel covalent post-synthetically modified MOF hybrid as a sensitive and selective fluorescent probe for Al3+ detection in aqueous media

作者：Zhu, Shu-Yin; Yan, Bing^*

来源：Dalton Transactions, 2018, 47(5): 1674-1681.

DOI：10.1039/c7dt04266c

• METAL-ORGANIC FRAMEWORKS
• TURN-ON CHEMOSENSOR
• ALZHEIMERS-DISEASE
• GAS-STORAGE
• ALUMINUM
• LUMINESCENT
• SENSOR
• IONS
• FUNCTIONALIZATION
• ADSORPTION

A modified MOF named UiO-66-NH2-SA was synthesized based on the covalent post synthetic attachment of the MOFs (UiO-66-NH2) and salicylaldehyde via a Schiff-base reaction. The as-prepared functionalized UiO-66-NH2-SA not only maintains its structural integrity during the PSM process, but also shows excellent luminescence and good fluorescence stability in water. It was further utilized as a novel fluorescent probe for detecting of Al3+. The fluorescence intensity of UiO-66-NH2-SA increased linearly upon increasing the concentration of Al3+ in the range of 0-500 mu M with a detection limit of 6.98 mu M. The possible mechanism is discussed. This study presents a new ratiometric and colorimetric Al3+ fluorescent sensor. The good fluorescence stability of UiO-66-NH2-SA in aqueous media, the low detection limit and the broad linear in sensing Al3+ indicate its high potential in practical applications.

• 出版日期2018-2-7
• 单位同济大学