Fluorescent Oxygen-Doped g-C3N4 Quantum Dots for Selective Detection Fe3+ Ions in Cell Imaging

Herein, oxygen-doped g-C3N4 quantum dots (OCNQDs) were fabricated through sintering and ultrasonic-assisted liquid-phase exfoliation methods. The obtained OCNQDs with uniform size show high crystalline quality, and the average diameter is 6.7 ± 0.5 nm. Furthermore, the OCNQDs display excellent fluor...

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Published inNanomaterials (Basel, Switzerland) Vol. 12; no. 11; p. 1826
Main Authors Zhang, Jiahui, Jing, Yan, Zhang, Peng, Xu, Benhua
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 26.05.2022
MDPI
Subjects
Atoms & subatomic particles
Biocompatibility
bioimaging
Carbon nitride
Chemical sensors
Cytotoxicity
Ferric ions
Fluorescence
Fluorescent indicators
Ions
Iron
Liquid phases
Medical imaging
metal ion detection
Oxygen
oxygen-doped g-C3N4 quantum dots
Particle size
Permeability
Physiology
Quantum dots
Selectivity
Toxicity
Beijing China
United States > US
China
Japan
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Summary:Herein, oxygen-doped g-C3N4 quantum dots (OCNQDs) were fabricated through sintering and ultrasonic-assisted liquid-phase exfoliation methods. The obtained OCNQDs with uniform size show high crystalline quality, and the average diameter is 6.7 ± 0.5 nm. Furthermore, the OCNQDs display excellent fluorescence properties, good water solubility, and excellent photo stability. The OCNQDs as fluorescence probe show high sensitivity and selectivity to Fe3+ ions. Furthermore, the fluorescent OCNQDs are applied for live cell imaging and Fe3+ ions detecting in living cells with low cytotoxicity, good biocompatibility, and high permeability. Overall, the fluorescent OCNQDs fabricated in this work can be promising candidates for a range of chemical sensors and bioimaging applications.
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These authors contributed equally to this work.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12111826