College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China.
College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China.
Food Chem. 2021 Aug 30;354:129584. doi: 10.1016/j.foodchem.2021.129584. Epub 2021 Mar 13.
An ingenious nanoscale fluorescent sensor derived from Eu-postfunctionalized MIL-53 (Al) (Eu@MIL-53 [Al]) was fabricated though a simple and effective approach. Malachite green (MG) effectively turned off the luminescence of Eu@MIL-53 (Al) via fluorescence resonance energy transfer (FRET), thus enabling MG sensing. The developed probe exhibited instantaneous reusability after being cleaned with deionized water. The fluorescence intensity, quenching efficiency, and crystal structure of the recoverable sensor after five recycling processes were unchanged compared with those of the original sample. Moreover, the potential mechanism of MG detection was revealed in detail. This work represents the first attempt to determine MG in aquaculture water and products by using metal-organic frameworks (MOFs). The Eu@MIL-53 (Al) probe proved to be a remarkable fluorescence probe for MG with high selectivity, sensitivity, and excellent regeneration capability. It provides a promising functional platform for the recognition of illegal MG addition to aquaculture water and products.
通过一种简单有效的方法制备了一种源自 Eu 后功能化 MIL-53（Al）（Eu@MIL-53[Al]）的巧妙的纳米荧光传感器。孔雀石绿（MG）通过荧光共振能量转移（FRET）有效地使 Eu@MIL-53（Al）的发光猝灭，从而实现了 MG 的检测。该探针在用去离子水清洗后可立即重复使用。与原始样品相比，经过五次回收过程后，可回收传感器的荧光强度、猝灭效率和晶体结构保持不变。此外，详细揭示了 MG 检测的潜在机制。这项工作代表了首次尝试使用金属有机骨架（MOFs）来确定水产养殖用水和产品中的 MG。Eu@MIL-53（Al）探针被证明是一种用于 MG 的高选择性、高灵敏度和优异再生能力的出色荧光探针。它为识别水产养殖用水和产品中非法添加 MG 提供了一个有前途的功能平台。
