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荧光氮磷共掺杂碳量子点的合成及其用于铁离子的传感、细胞成像和抗氧化活性研究。

Synthesis of Fluorescent Nitrogen and Phosphorous Co-doped Carbon Quantum Dots for Sensing of Iron, Cell Imaging and Antioxidant Activities.

机构信息

Department of Applied Chemistry, Adama Science and Technology University, Adama, Ethiopia.

Department of Chemistry, Debre Berhan University, Debre Berhan, Ethiopia.

出版信息

J Fluoresc. 2021 May;31(3):763-774. doi: 10.1007/s10895-021-02696-2. Epub 2021 Mar 2.

DOI:10.1007/s10895-021-02696-2
PMID:33655457
Abstract

Carbon quantum dots (CQD) as the result of their exceptional physical and chemical properties show tremendous potential in various field of applications like cell imaging and doping of CQDs with elements like nitrogen and phosphorous increase its fluorescence property. Herein, we have synthesized fluorescent nitrogen and phosphorous codoped carbon quantum dots (NPCQDs) via a one-pot hydrothermal method. Sesame oil, L-Aspartic acid, and phosphoric acid were used as carbon, nitrogen, and phosphorous sources, respectively. UV-Vis spectrophotometer, fluorescence spectrometer, Fourier transform infrared spectrometer (FTIR), X-ray diffraction spectrometer (XRD), field emission scanning microscopy (FESEM), and transmission electron microscopy (TEM) were employed to characterize the synthesized fluorescent NPCQDs. The as-synthesized NPCQDs with a particle size of 4.7 nm possess excellent water solubility, high fluorescence with high quantum yield (46%), high ionic stability, and resistance to photobleaching. MTT assay indicated the biocompatibility of NPCQDs and it was used for multicolor live-cell imaging. Besides, the NPCQDs show an effective probe of iron ions (Fe) in an aqueous solution with a high degree of sensitivity and selectivity. The DPPH assay showed its good antioxidant activity.

摘要

碳量子点（CQD）由于其独特的物理和化学性质，在各个应用领域都显示出巨大的潜力，如细胞成像，而将氮和磷等元素掺杂到 CQD 中可以提高其荧光性能。本文采用一步水热法合成了荧光氮磷共掺杂碳量子点（NPCQDs）。芝麻籽油、L-天冬氨酸和磷酸分别作为碳、氮和磷源。采用紫外-可见分光光度计、荧光分光光度计、傅里叶变换红外光谱仪（FTIR）、X 射线衍射光谱仪（XRD）、场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）对合成的荧光 NPCQDs 进行了表征。所合成的 NPCQDs 的粒径为 4.7nm，具有良好的水溶性、高荧光性（量子产率为 46%）、高离子稳定性和耐光漂白性。MTT 试验表明 NPCQDs 具有良好的生物相容性，可用于多色活细胞成像。此外，NPCQDs 对水溶液中的铁离子（Fe）具有高灵敏度和选择性的有效探针。DPPH 试验表明其具有良好的抗氧化活性。

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本文引用的文献

[1]
Hydrothermal synthesis of N-doped carbon quantum dots and their application in ion-detection and cell-imaging.

Spectrochim Acta A Mol Biomol Spectrosc. 2021-3-5

[2]
Synthesis of Novel Fluorescent Carbon Quantum Dots From for Rapid and Highly Selective Detection of o-nitrophenol and Cellular Imaging.

Front Chem. 2020-7-31

[3]
Preparation of boron nitrogen co-doped carbon quantum dots for rapid detection of Cr(VI).

Spectrochim Acta A Mol Biomol Spectrosc. 2020-8-7

[4]
Specific Anti-biofilm Activity of Carbon Quantum Dots by Destroying . Biofilm Related Genes.

Int J Nanomedicine. 2020-7-31

[5]
Iron Deficiency Anemia at Time of Vaccination Predicts Decreased Vaccine Response and Iron Supplementation at Time of Vaccination Increases Humoral Vaccine Response: A Birth Cohort Study and a Randomized Trial Follow-Up Study in Kenyan Infants.

Front Immunol. 2020

[6]
Nitrogen-sulfur co-doped pH-insensitive fluorescent carbon dots for high sensitive and selective hypochlorite detection.

Spectrochim Acta A Mol Biomol Spectrosc. 2020-7-20

[7]
Induced toxicity in early-life stage zebrafish (Danio rerio) and its behavioral analysis after exposure to non-doped, nitrogen-doped and nitrogen, sulfur-co doped carbon quantum dots.

Environ Toxicol Pharmacol. 2020-10

[8]
A review: recent advances in preparations and applications of heteroatom-doped carbon quantum dots.

Dalton Trans. 2020-5-13

[9]
Carbon nanodots from date molasses: new nanolights for the in vitro scavenging of reactive oxygen species.

J Mater Chem B. 2014-10-21

[10]
Fluorescent-Nitrogen-Doped Carbon Quantum Dots Derived from Citrus Lemon Juice: Green Synthesis, Mercury(II) Ion Sensing, and Live Cell Imaging.

ACS Omega. 2020-2-21

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