Ionic liquid-functionalized carbon dots with positive surface charge for selective detection of ascorbic acid

被引：0
作者：
Ouwen Xu
Shuyu Wan
Jing Yang
Hanyang Song
Ji Xia
Luzheng Dong
Xiashi Zhu
机构：
[1] Yangzhou University,College of Guangling, College of Chemistry and Chemical Engineering
来源：
Carbon Letters | 2023年 / 33卷
关键词：
Carbon quantum dots; Functionalization; Ionic liquid; Fluorescent probe; Pharmaceutical analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Novel ionic liquid-functionalized carbon quantum dots (IL-CDs) were prepared by hydrothermal method, and characterized with FT-IR, TEM and XPS. The IL-CDs exhibited narrower particle size distribution with more uniform dispersion and the surface potential changes from negative to positive due to the function of IL. IL-CDs could be quenched (“turned off”) after adding ascorbic acid (AA), and as an “on–off”, fluorescent probe could be established for direct analysis AA. The linear range of AA was 0.34–30.00 μg/mL and the LOD was 0.11 μg/mL. The method was successfully applied to the determination of AA in real samples with satisfactory results.
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页码：387 / 395
页数：8
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