Rhodamine B functionalized luminescent metal–organic frameworks for ratiometric fluorescence sensing of hydroquinone,Journal of Materials Chemistry B

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Rhodamine B functionalized luminescent metal–organic frameworks for ratiometric fluorescence sensing of hydroquinone
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2022-09-13 , DOI: 10.1039/d2tb01220k
Qi Cao ₁ , Qingya Yu ₁ , Zheng Li ₁ , Zhenzhen Huang ₁ , Qiong Jia ₁

Affiliation

The development of sensitive and selective detection methods for hydroquinone (HQ), a phenolic organic compound with high toxicity and low degradability, is of extraordinary importance. In this work, a fluorescent sensor based on functionalized luminescent metal–organic frameworks (LMOFs) was designed and applied for the ratiometric fluorescence sensing of HQ. The sensor was prepared by the functionalization of IRMOF-3 with rhodamine B (RhB), possessing dual-emission fluorescence properties. After the addition of HQ, the blue fluorescence of the IRMOF-3 framework was gradually weakened, while the red fluorescence of RhB remained unchanged, resulting in the continuous fluorescence change of RhB@IRMOF-3 with HQ concentrations. The sensing mechanism demonstrates that HQ changes the fluorescence of the sensor via electron transfer between benzoquinone and RhB@IRMOF-3. The RhB@IRMOF-3 sensor has the advantages of a wide linear range, quick response speed, and strong specificity for HQ detection. This work is the first attempt focusing on functionalized LMOFs for HQ fluorescence detection, which has superb potential for the application to real environmental water samples.

中文翻译：

用于对苯二酚比例荧光传感的罗丹明 B 功能化发光金属有机框架

开发对苯二酚 (HQ) 具有高毒性和低降解性的酚类有机化合物的灵敏和选择性检测方法非常重要。在这项工作中，设计了一种基于功能化发光金属有机骨架 (LMOF) 的荧光传感器，并将其应用于 HQ 的比例荧光传感。该传感器是通过用罗丹明 B (RhB) 对 IRMOF-3 进行功能化制备的，具有双发射荧光特性。添加HQ后，IRMOF-3骨架的蓝色荧光逐渐减弱，而RhB的红色荧光保持不变，导致RhB@IRMOF-3的荧光随HQ浓度的连续变化。传感机制表明 HQ 通过以下方式改变传感器的荧光苯醌和 RhB@IRMOF-3 之间的电子转移。RhB@IRMOF-3传感器具有线性范围宽、响应速度快、HQ检测特异性强等优点。这项工作是首次尝试将功能化 LMOFs 用于 HQ 荧光检测，具有应用于实际环境水样的巨大潜力。

更新日期：2022-09-13

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