A novel fluorescent probe based on N, B, F co-doped carbon dots for highly selective and sensitive determination of sulfathiazole

2021 ◽  
Vol 759 ◽  
pp. 143432
Author(s):  
Letian Chen ◽  
Yongli Liu ◽  
Guohao Cheng ◽  
Zegang Fan ◽  
Jinyu Yuan ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Sensitive Determination ◽  
Doped Carbon Dots ◽  
Co Doped

High fluorescence S, N co-doped carbon dots as an ultra-sensitive fluorescent probe for the determination of uric acid

Talanta ◽  
2016 ◽  
Vol 155 ◽  
pp. 62-69 ◽  
Author(s):  
Haiyan Wang ◽  
Qiujun Lu ◽  
Yuxin Hou ◽  
Yalan Liu ◽  
Youyu Zhang
Keyword(s):  
Uric Acid ◽  
Fluorescent Probe ◽  
Carbon Dots ◽  
High Fluorescence ◽  
Doped Carbon Dots ◽  
Co Doped

Nitrogen and Sulfur Co-doped Fluorescent Carbon Dots for the Detection of Morin and Cell Imaging

2018 ◽  
Vol 15 (1) ◽  
pp. 47-55
Author(s):  
Xuebing Li ◽  
Haifen Yang ◽  
Ning Wang ◽  
Tijian Sun ◽  
Wei Bian ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Fluorescent Probe ◽  
Fluorescence Intensity ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Water Soluble ◽  
Heating Process ◽  
X Ray ◽  
Doped Carbon Dots ◽  
Co Doped

Background: Morin has many pharmacological functions including antioxidant, anticancer, anti-inflammatory, and antibacterial effects. It is commonly used in the treatment of antiviral infection, gastropathy, coronary heart disease and hepatitis B in clinic. However, researches have shown that morin is likely to show prooxidative effects on the cells when the amount of treatment is at high dose, leading to the decrease of intracellular ATP levels and the increase of necrosis process. Therefore, it is necessary to determine the concentration of morin in biologic samples. Method: Novel water-soluble and green nitrogen and sulfur co-doped carbon dots (NSCDs) were prepared by a microwave heating process with citric acid and L-cysteine. The fluorescence spectra were collected at an excitation wavelength of 350 nm when solutions of NSCDs were mixed with various concentrations of morin. Results: The as-prepared NSCDs were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The fluorescence intensity of NSCDs decreased significantly with the increase of morin concentration. The fluorescence intensity of NSCDs displayed a linear response to morin in the concentration 0.10-30 μM with a low detection limit of 56 nM. The proposed fluorescent probe was applied to analysis of morin in human body fluids with recoveries of 98.0-102%. Conclusion: NSCDs were prepared by a microwave heating process. The present analytical method is sensitive to morin. The quenching process between NSCDs and morin is attributed to the static quenching. In addition, the cellular toxicity on HeLa cells indicated that the as-prepared NSCDs fluorescent probe does not show obvious cytotoxicity in cell imaging. Our proposed method possibly opens up a rapid and nontoxic way for preparing heteroatom doped carbon dots with a broad application prospect.

Selective determination of Ag+ using Salecan derived nitrogen doped carbon dots as a fluorescent probe

2017 ◽  
Vol 77 ◽  
pp. 508-512 ◽  
Author(s):  
Junjian Li ◽  
Gancheng Zuo ◽  
Xiaoliang Qi ◽  
Wei Wei ◽  
Xiaohao Pan ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Selective Determination ◽  
Nitrogen Doped ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

N,S co-doped carbon dots based fluorescent “on-off-on” sensor for determination of ascorbic acid in common fruits

2018 ◽  
Vol 258 ◽  
pp. 214-221 ◽  
Author(s):  
Xueli Luo ◽  
Wengang Zhang ◽  
Yong Han ◽  
Xiumei Chen ◽  
Li Zhu ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Carbon Dots ◽  
Doped Carbon Dots ◽  
Co Doped
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