纳米探针
荧光
水溶液
纳米材料
量子点
碳纤维
热液循环
材料科学
核化学
纳米技术
化学
化学工程
纳米颗粒
有机化学
物理
复合材料
量子力学
复合数
工程类
作者
Kamile Arkin,Yuxin Zheng,Jiawei Hao,Siyi Zhang,Qianqian Shang
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-08-03
卷期号:4 (8): 8500-8510
被引量:15
标识
DOI:10.1021/acsanm.1c01838
摘要
The use of nanomaterials such as carbon dots (CDs) as rapid detection fluorescent nanoprobes is a hot topic in the field of analytical chemistry. In this paper, blue, green, and red CDs with high fluorescence quantum yields (24, 54, and 38%, respectively) were obtained from m-phenylenediamine and urea by hydrothermal synthesis and chromatographic separation. After investigating the structures and properties of the obtained CDs, three distinct and sensitive fluorescent nanoprobes with different functions were successfully constructed. The first nanoprobe derived from blue CDs could be used to detect the pH of a strong acid solution (pH 3.0); a rapid detection kit was designed based on it. The second nanoprobe based on Green CDs with ellagic acid (EA) modification allowed the sensitive determination of Fe3+ ions in aqueous solutions. The final probe derived from Red CDs could be used to test for organic acids in liquor. The test results of the commercial liquor were consistent with the standard methods. The detection mechanism of the three fluorescent probes was proposed. Using CDs to construct multifunctional fluorescent nanoprobes is beneficial for the application of CDs to rapid and specific detection and recognition.
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