基于香豆素的席夫碱：一种用于选择性检测实际样品中 F 离子的有效比色传感器及 DFT 研究。
A coumarin based Schiff Base: An effective colorimetric sensor for selective detection of F ion in real samples and DFT studies.
机构信息
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
Institute of Chemical Sciences, Bahauddin Zakariya University, 60800 Multan, Pakistan.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Feb 5;286:121964. doi: 10.1016/j.saa.2022.121964. Epub 2022 Oct 13.
Chemosensors are molecular devices which react with target and give a visible signal, which is a degree of its sensitivity. Herein, a novel coumarin based Schiff Base has been synthesized for F ions detection. The chemosensor showed an intense color change upon the addition of F ions (light yellow to purple). The chemosensor has fewer effects of competing anions. The limit of detection is calculated as low as 1.1 × 10 and the binding constant was determined as 1.61 × 10. The job's plot confirmed 1:1 stoichiometry between chemosensor and F ion. The reverse reaction of chemosensor with MeOH is useful to construct a combinatorial logic circuit gates. The interaction mechanism of chemosensor was deliberated by H NMR, FTIR, and DFT studies. Finally, the chemosensor was useful to detect F ions in tooth-paste sample and test strip is prepared for F ions detection.
化学传感器是与目标物反应并给出可见信号的分子器件，其灵敏度的程度与信号的强度有关。在此，我们合成了一种新型的基于香豆素的席夫碱，用于 F 离子的检测。该化学传感器在加入 F 离子后会发生强烈的颜色变化（浅黄色变为紫色）。该化学传感器对竞争阴离子的影响较小。检测限计算低至 1.1×10，结合常数确定为 1.61×10。Job 图证实了化学传感器与 F 离子之间的 1:1 化学计量关系。化学传感器与 MeOH 的逆反应可用于构建组合逻辑电路门。通过 1H NMR、FTIR 和 DFT 研究探讨了化学传感器的相互作用机制。最后，该化学传感器可用于检测牙膏样品中的 F 离子，并制备了用于 F 离子检测的试条。
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