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Utilizing excited-state proton transfer fluorescence quenching mechanism, layered rare earth hydroxides enable ultra-sensitive detection of nitroaromatic
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2024-06-11 , DOI: 10.1016/j.jcis.2024.06.075 Yexin Shen 1 , Ran Hong 2 , Xin He 3 , Cong Wang 1 , Xiuyuan Wang 1 , Shantao Li 1 , Xiandong Zhu 1 , Daxiang Gui 1
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2024-06-11 , DOI: 10.1016/j.jcis.2024.06.075 Yexin Shen 1 , Ran Hong 2 , Xin He 3 , Cong Wang 1 , Xiuyuan Wang 1 , Shantao Li 1 , Xiandong Zhu 1 , Daxiang Gui 1
Affiliation
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Convenient, rapid, and accurate detection of nitroaromatic organic toxins and harmful substances is of great significance in research. In the present study, two-dimensional layered rare-earth hydroxides (LYH) were used as ion-exchange matrix materials, and the anionic fluorescent dye molecules (HPTS) were successfully introduced into the LYH structures in situ via a simple and effective “plug-and-play” strategy, which gave the compounds ultra-sensitive fluorescence sensing detection of nitrobenzene, p-nitrotoluene and p-nitrophenol (Fluorescence response time < 1 , and the LOD for nitrobenzene, p-nitrophenol and p-nitrotoluene reached an impressive 349 ppb, 22 ppb and 98 ppb, respectively). Combined with theoretical calculations, we elucidated in detail the fluorescence quenching response mechanism of the LYH-HPTS towards nitroaromatic. Additionally, we also constructed fluorescent paper sensor, which effectively transformed the LYH-HPTS from theoretical detection to device application. The LYH-HPTS material is not only simple to synthesize, cost-effective and stable, but also has the features of fast response, excellent sensitivity and selectivity, and good reproducibility, which provides a new approach for the rapid and accurate detection of nitroaromatic.
中文翻译：
利用激发态质子转移荧光猝灭机制，层状稀土氢氧化物能够实现硝基芳香族化合物的超灵敏检测
方便、快速、准确地检测硝基芳香族有机毒素和有害物质具有重要的研究意义。本研究采用二维层状稀土氢氧化物（LYH）作为离子交换基质材料，通过简单有效的“插塞”将阴离子荧光染料分子（HPTS）成功原位引入到LYH结构中。 “-and-play”策略，使化合物对硝基苯、对硝基甲苯和对硝基苯酚具有超灵敏的荧光传感检测能力（荧光响应时间<1，对硝基苯、对硝基苯酚和对硝基甲苯的LOD达到了令人印象深刻的水平）分别为 349 ppb、22 ppb 和 98 ppb）。结合理论计算，我们详细阐明了LYH-HPTS对硝基芳香族化合物的荧光猝灭响应机制。此外，我们还构建了荧光纸传感器，有效地将LYH-HPTS从理论检测转化为设备应用。 LYH-HPTS材料不仅合成简单、成本低廉、性能稳定，而且具有响应速度快、灵敏度和选择性优良、重现性好的特点，为硝基芳烃的快速、准确检测提供了新途径。
更新日期：2024-06-11
中文翻译：
利用激发态质子转移荧光猝灭机制，层状稀土氢氧化物能够实现硝基芳香族化合物的超灵敏检测
方便、快速、准确地检测硝基芳香族有机毒素和有害物质具有重要的研究意义。本研究采用二维层状稀土氢氧化物（LYH）作为离子交换基质材料，通过简单有效的“插塞”将阴离子荧光染料分子（HPTS）成功原位引入到LYH结构中。 “-and-play”策略，使化合物对硝基苯、对硝基甲苯和对硝基苯酚具有超灵敏的荧光传感检测能力（荧光响应时间<1，对硝基苯、对硝基苯酚和对硝基甲苯的LOD达到了令人印象深刻的水平）分别为 349 ppb、22 ppb 和 98 ppb）。结合理论计算，我们详细阐明了LYH-HPTS对硝基芳香族化合物的荧光猝灭响应机制。此外，我们还构建了荧光纸传感器，有效地将LYH-HPTS从理论检测转化为设备应用。 LYH-HPTS材料不仅合成简单、成本低廉、性能稳定，而且具有响应速度快、灵敏度和选择性优良、重现性好的特点，为硝基芳烃的快速、准确检测提供了新途径。
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