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Simple and sensitive fluorescence sensing of methyl parathion based on the inner filter effect of p-nitrophenol on nitrogen-doped titanium carbide quantum dots
Luminescence ( IF 3.2 ) Pub Date : 2023-12-26 , DOI: 10.1002/bio.4632 Yinhui Yi 1, 2 , Jieling Hou 2 , Xiaoya Bi 1 , Lijun Luo 1 , Libo Li 1 , Tianyan You 1
Luminescence ( IF 3.2 ) Pub Date : 2023-12-26 , DOI: 10.1002/bio.4632 Yinhui Yi 1, 2 , Jieling Hou 2 , Xiaoya Bi 1 , Lijun Luo 1 , Libo Li 1 , Tianyan You 1
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It is of great significance to develop an effective method for methyl parathion (MP) detection. Herein, a novel nitrogen-doped titanium carbide quantum dots (N-Ti3C2 QDs) was prepared and used to construct a simple and sensitive fluorescence sensing platform of MP by making use of inner filter effect (IFE). The prepared N-Ti3C2 QDs can exhibit strong blue fluorescence at 434 nm. Meanwhile, MP could hydrolyze to produce p-nitrophenol (p-NP) under alkaline conditions, which showed a characteristic ultraviolet-visible (UV-visible) absorption peak at 405 nm, resulting in the fluorescence of N-Ti3C2 QDs is effectively quenched by p-NP. In addition, the investigation of time-resolved fluorescence decays indicated that the corresponding quenching mechanism of p-NP on N-Ti3C2 QDs is due to the IFE. After optimizing the conditions, the as-developed fluorescence sensing platform displayed wide detection range (0.1–30 μg mL−1) and low detection limit (0.036 μg mL−1) for MP, and it was also successfully applied for MP analysis in real water samples, thus it is expected that this simple, sensitive and enzyme-free sensing platform shows great applications.
中文翻译：
基于对硝基苯酚对氮掺杂碳化钛量子点的内滤效应简单灵敏的甲基对硫磷荧光传感
建立有效的甲基对硫磷（MP）检测方法具有重要意义。本文制备了一种新型氮掺杂碳化钛量子点（N-Ti 3 C 2 QD），并利用内滤光效应（IFE）构建了简单灵敏的MP荧光传感平台。制备的N-Ti 3 C 2量子点在434 nm处表现出强蓝色荧光。同时，MP在碱性条件下可水解生成对硝基苯酚(p-NP)，在405 nm处表现出特征性紫外-可见(UV-visible)吸收峰，从而产生N-Ti 3 C 2 QDs的荧光被 p-NP 有效猝灭。此外，时间分辨荧光衰减的研究表明，p-NP在N-Ti 3 C 2 QD上的相应猝灭机制是由于IFE。经过优化条件后，所开发的荧光传感平台对MP表现出宽检测范围（0.1~30 μg mL -1 ）和低检测限（0.036 μg mL -1 ），并成功应用于实际MP分析水样品，因此预计这种简单、灵敏且无酶的传感平台将显示出巨大的应用前景。
更新日期：2023-12-26
中文翻译：
基于对硝基苯酚对氮掺杂碳化钛量子点的内滤效应简单灵敏的甲基对硫磷荧光传感
建立有效的甲基对硫磷（MP）检测方法具有重要意义。本文制备了一种新型氮掺杂碳化钛量子点（N-Ti 3 C 2 QD），并利用内滤光效应（IFE）构建了简单灵敏的MP荧光传感平台。制备的N-Ti 3 C 2量子点在434 nm处表现出强蓝色荧光。同时，MP在碱性条件下可水解生成对硝基苯酚(p-NP)，在405 nm处表现出特征性紫外-可见(UV-visible)吸收峰，从而产生N-Ti 3 C 2 QDs的荧光被 p-NP 有效猝灭。此外，时间分辨荧光衰减的研究表明，p-NP在N-Ti 3 C 2 QD上的相应猝灭机制是由于IFE。经过优化条件后，所开发的荧光传感平台对MP表现出宽检测范围（0.1~30 μg mL -1 ）和低检测限（0.036 μg mL -1 ），并成功应用于实际MP分析水样品，因此预计这种简单、灵敏且无酶的传感平台将显示出巨大的应用前景。
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