Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541006, PR China.
Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541006, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2021 Oct 5;259:119880. doi: 10.1016/j.saa.2021.119880. Epub 2021 Apr 27.
A novel imidazoles fluorescent probe (2) was synthesized from vanillin, o-phenylenediamine, and N,N-diphenylcarbamyl chloride. Its structure was characterized by fluorescence spectra, UV-Vis spectra, H NMR, C NMR, and high-resolution mass spectrometry (HRMS). Moreover, its aggregation-induced emission (AIE) feature was investigated in THF/MeOH solution. Furthermore, the fluorescence quenching experimental results suggest that compound 2 is the potential fluorescent probe of small organic molecules showing high selectivity and sensitivity for nitroaromatic compounds. In addition, the probe could be applied in the determination of trifluralin with fast response and stability. The fluorescence response of the probe exhibited a good linear correlation with the concentration of trifluralin ranging from 10 to 100 μM, and the limit of detection (LOD) was as low as 5.066 μM. Finally, the probe was successfully utilized to determine the amount of trifluralin in real samples, and the recoveries were 91.1% to 111.2%, indicating the applicability and reliability of the probe.
一种新型咪唑类荧光探针（2）由香草醛、邻苯二胺和 N,N-二苯基碳酰氯合成。其结构通过荧光光谱、紫外可见光谱、核磁共振氢谱、碳谱和高分辨率质谱（HRMS）进行了表征。此外，还研究了其在 THF/MeOH 溶液中的聚集诱导发光（AIE）特性。进一步的荧光猝灭实验结果表明，化合物 2 是一种具有高选择性和灵敏度的小分子荧光探针，可用于检测硝基芳香族化合物。此外，该探针可用于测定氟乐灵，具有快速响应和稳定性。探针的荧光响应与氟乐灵的浓度在 10 到 100 μM 范围内呈良好的线性关系，检测限（LOD）低至 5.066 μM。最后，该探针成功用于测定实际样品中氟乐灵的含量，回收率为 91.1%至 111.2%，表明该探针具有适用性和可靠性。
