Novel N-doped carbon dots derived from citric acid and urea: fluorescent sensing for determination of metronidazole and cytotoxicity studies

Qi, Haiyan; Qiu, Lixin; Zhang, Xiaohong; Yi, Tonghui; Jing, Jing; Sami, Rokayya; Alanazi, Sitah F.; Alqahtani, Zahrah; Aljabri, Mahmood D.; Rahman, Mohammed M.

doi:10.1039/d2ra07150a

Cited by 16 publications

(2 citation statements)

References 48 publications

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“…[12][13][14][15][16] These impurities generate intragap states in CDs, which alter their electronic band structures and shi their PL wavelengths. [17][18][19] Among these impurities, nitrogen is considered the optimal dopant for CDs due to its similar atomic size to carbon 20,21 and its ability to form strong covalent bonds with carbon. This bond formation enables the introduction of additional photoexcitable electrons to the ground state.…”

Section: Introductionmentioning

confidence: 99%

Predictable incorporation of nitrogen into carbon dots: insights from pinacol rearrangement and iminium ion cyclization

Cho,

Jung,

Lee

et al. 2023

Nanoscale Adv.

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Section: Introductionmentioning

confidence: 99%

Predictable incorporation of nitrogen into carbon dots: insights from pinacol rearrangement and iminium ion cyclization

Cho,

Jung,

Lee

et al. 2023

Nanoscale Adv.

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“…Nowadays many kinds of analytical methods commonly used for MTD detection are high-performance liquid chromatography (HPLC), 9 spectrophotometry, 10 electroluminescence, 11 fluorescence, 12 and gas chromatography (GC). 13 These procedures are precise, sensitive, and long-lasting.…”

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confidence: 99%

Construction of Nickel Tungsten Oxide Anchored Carbon Nanofibers Modified with Glassy Carbon Electrode for Enhanced Electrochemical Detection of Metronidazole in Urine and Environmental Water Sample

Mariappan,

Sakthinathan,

Chen

et al. 2024

J. Electrochem. Soc.

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Metronidazole (MTD) is an antibiotic that is commonly used to treat pathogens and protozoal infections, which have a highly harmful impact on human health and domestic animals. Hence, the detection of MTD is highly necessary to avoid environmental pollution. The hydrothermal technique has been utilized to prepare Nickel Tungsten oxide (NiWO4) nanosheets which were anchored with the carbon nanofiber (CNF) to produce CNF/NiWO4 nanocomposite, the nanocomposite coated on the glassy carbon electrode (GCE) and applied to the electrochemical detection of MTD. Besides, field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), energy dispersive X-ray analysis (EIS), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), and X-ray photoelectron spectroscopy. Moreover, electrochemical impedance spectroscopy (EIS), cyclic voltammetry studies (CV), and differential pulse voltammetry (DPV) were also handled for the identification of the electrochemical behavior of the GCE/CNF/NiWO4 electrode responses. Finally, the CNF/NiWO4 electrode shows a low detection limit of 0.4 μM, a wide linear response range of 0.01-650 µM, and a higher sensitivity of 0.274 μA μM−1 cm−2, with better repeatability, reproducibility, and excellent stability. Finally, the prepared GCE/CNF/NiWO4 electrodes were employed to detect MTD in tap water and urine samples with acceptable recoveries.

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N-doped carbon quantum dots obtained from citric acid and L-phenylalanine

Kostromin,

Borodina,

Pankin

et al. 2024

Chemical Physics Letters

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Novel N-doped carbon dots derived from citric acid and urea: fluorescent sensing for determination of metronidazole and cytotoxicity studies

Abstract: N-CDs were prepared with a high fluorescence quantum yield of 35.08%. N-CDs have been employed to detect metronidazole in commercial metronidazole tablets. N-CDs exhibited quick response time, high selectivity and sensitivity, and low cytotoxicity.

Cited by 16 publications

References 48 publications

Predictable incorporation of nitrogen into carbon dots: insights from pinacol rearrangement and iminium ion cyclization

Predictable incorporation of nitrogen into carbon dots: insights from pinacol rearrangement and iminium ion cyclization

Construction of Nickel Tungsten Oxide Anchored Carbon Nanofibers Modified with Glassy Carbon Electrode for Enhanced Electrochemical Detection of Metronidazole in Urine and Environmental Water Sample

N-doped carbon quantum dots obtained from citric acid and L-phenylalanine

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