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广东第二师范学院 化学与材料科学学院,广东 广州 510303
刘炉英,硕士,实验师,研究方向:荧光传感器分析,Email:liuluying@gdei.edu.cn
收稿日期:2024-08-11,
修回日期:2024-11-15,
录用日期:2024-12-12,
纸质出版日期:2025-05-15
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马海瑜,廖彩仪,梁秋雨,谢丽君,刘炉英.一种基于UiO-66-NH2@TCPP的比率荧光传感器检测精氨酸[J].分析测试学报,2025,44(05):925-930.
MA Hai-yu,LIAO Cai-yi,LIANG Qiu-yu,XIE Li-jun,LIU Lu-ying.A Ratiometric Fluorescent Sensor Based on the UiO-66-NH2@TCPP for the Detection of Arginine[J].Journal of Instrumental Analysis,2025,44(05):925-930.
马海瑜,廖彩仪,梁秋雨,谢丽君,刘炉英.一种基于UiO-66-NH2@TCPP的比率荧光传感器检测精氨酸[J].分析测试学报,2025,44(05):925-930. DOI: 10.12452/j.fxcsxb.240811294.
MA Hai-yu,LIAO Cai-yi,LIANG Qiu-yu,XIE Li-jun,LIU Lu-ying.A Ratiometric Fluorescent Sensor Based on the UiO-66-NH2@TCPP for the Detection of Arginine[J].Journal of Instrumental Analysis,2025,44(05):925-930. DOI: 10.12452/j.fxcsxb.240811294.
该研究基于荧光/比色双模法构建了一个比率荧光传感器,将TCPP原位封装到UiO-66-NH
2
MOFs中生成UiO-66-NH
2
@TCPP测定精氨酸。所制备的传感器具有双发射特性,在360 nm波长激发下,具有UiO-66-NH
2
460 nm处的荧光强度随着精氨酸浓度的增加而显著增加,而TCPP在660 nm的荧光强度保持基本稳定。因此,UiO-66-NH
2
@TCPP中两处荧光信号强度的比值
F
460
/
F
660
与精氨酸浓度在0.05~1.75 mmol/L 和1.75~6.0 mmol/L范围内呈良好线性关系,检出限为8.3 μmol/L。与UiO-66-NH
2
MOFs的单一信号进行对比,比率荧光传感器能降低检出限并扩大线性范围。通过对自来水样和尿液的加标回收实验,成功地验证了该传感器的实用性。该传感器还可基于比色原理设计纸基传感器用于精氨酸的检测。在紫外光照射下,UiO-66-NH
2
@TCPP负载的纸基传感器对精氨酸将产生肉眼可见的颜色变化(从红色到蓝色)。该研究有望为精氨酸的现场检测提供一种简单、方便、有效的分析方法。
This study developed a ratiometric fluorescence sensor based on a fluorescence/colorimetric dual-mode approach by in situ encapsulating TCPP into UiO-66-NH₂ MOFs to form UiO-66-NH₂@TCPP for the detection of arginine. The fabricated sensor exhibited dual-emission characteristics under single-wavelength excitation at 360 nm,and the fluorescence intensity of UiO-66-NH₂ at 460 nm significantly increased with arginine concentration inereasing,while the emission peak of TCPP at 660 nm remained relatively stable. The result indicated that the ratio of
F
₄₆₀/
F
₆₆₀ demonstrated an excellent linear correlation with arginine concentrations in the range of 0.05-1.75 mmol/L and 1.75-6.0 mmol/L ,with a
detection limit as low as 8.3 μmol/L. Compared to the single system of UiO-66-NH₂ MOFs,the ratiometric sensor had a lower detection limit and a wider detection range. Furthermore,the practical applicability of the sensor was successfully validated through spiked recovery tests in tap water and urine samples. Notably,the sensor could be adapted into a paper-based colorimetric platform for arginine detection. Under UV light irradiation,the UiO-66-NH₂@TCPP-loaded paper sensor displayed a visible color transition from red to blue upon exposure to arginine. Overall,this study offers a straightforward,convenient,and efficient strategy for on - site arginine detection.
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