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Synthesis of Novel Fluorescent Carbon Quantum Dots From Rosa roxburghii for Rapid and Highly Selective Detection of o-nitrophenol and Cellular Imaging.
Frontiers in Chemistry ( IF 5.5 ) Pub Date : 2020-06-26 , DOI: 10.3389/fchem.2020.00665
Qianchun Zhang 1 , Junyi Liang 1 , Li Zhao 1 , Yan Wang 1 , Yuguo Zheng 1 , Yun Wu 1 , Li Jiang 1
Affiliation  

A novel carbon quantum dots (CQDs) were successfully synthesized by one-step hydrothermal reaction using Rosa roxburghii as a biomass-based precursor. The CQDs have an average size of 2.5 nm and a narrow size distribution. They display strong blue fluorescence with a quantum yield of 24.8% and good biocompatibility. Notably, these CQDs were capable of detecting trace o-nitrophenol in surface water and sewage with high sensitivity and specificity. The linear range is 0.08–40 μmol/L, and the limit of detection is 15.2 nmol/L. Furthermore, this CQDs was successfully applied for o-nitrophenol analysis in river water and sewage samples. Additionally, Hep3B cells, a human hepatocellular carcinoma cell line, can be easily imaged with high resolution using the as-prepared CQDs as nanoprobes. These results reveal that the as-prepared CQDs have potential applications for detecting o-nitrophenol and cell imaging.



中文翻译:

由罗莎(Rosa roxburghii)合成新型荧光碳量子点,用于邻硝基苯酚的快速和高选择性检测以及细胞成像。

通过一步水热反应成功合成了一种新型的碳量子点(CQDs) 罗莎(Rosa roxburghii)作为基于生物质的前体。CQD的平均尺寸为2.5 nm,尺寸分布较窄。它们显示出强蓝色荧光,量子产率为24.8%,并且具有良好的生物相容性。值得注意的是,这些CQD能够以高灵敏度和特异性检测地表水和污水中的痕量邻硝基苯酚。线性范围为0.08–40μmol/ L,检出限为15.2 nmol / L。此外,该CQD已成功应用于河流水和污水样品中的邻硝基苯酚分析。此外,使用制备好的CQD作为纳米探针,可以轻松地以高分辨率对人肝癌细胞Hep3B细胞成像。这些结果表明,所制备的CQD具有检测邻硝基苯酚和细胞成像的潜在应用。

更新日期:2020-07-31
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