The addition of heteroatoms to pristine carbon quantum dots (CQDs) change their structure and optical properties. In this study, fluorine (F)- and chlorine (Cl)-doped CQDs are prepared by the one-step green hydrothermal route from sodium fluoride, sodium chloride, urea, and citric acid as the starting precursors. Microscopy analysis reveals that the average size of these quantum dots is 5 ± 2 nm, whereas the chemical study shows the existence of C–F and C–Cl bonds. The produced F- and Cl-doped CQDs have fluorescence quantum yields of 0.151 and 0.284, respectively, at an excitation wavelength of 450 nm. Charge transfer resistance of F- and Cl-doped CQDs films is 2 orders of magnitude higher than in the pristine CQD films. Transport band gap of the doped CQDs is 2 eV bigger than that of pristine CQDs. Radical scavenging activity shows very good antioxidant activity of doped CQDs. Antibacterial testing reveals poor antibacterial activity against Staphylococcus aureus and Escherichia coli.... The F- and Cl-doped CQDs are successfully used as fluorescent probes for cell imaging as shown by confocal microscopy.
TY - JOUR
AU - Marković, Zoran M.
AU - Labudová, Martina
AU - Danko, Martin
AU - Matijašević, Danka
AU - Mičušík, Matej
AU - Nádaždy, Vojtech
AU - Kováčová, Mária
AU - Kleinová, Angela
AU - Špitalský, Zdeno
AU - Pavlović, Vladimir B.
AU - Milivojević, Dušan
AU - Medić, Mina M.
AU - Todorović-Marković, Biljana
PY - 2020
UR - https://vinar.vin.bg.ac.rs/handle/123456789/9733
AB - The addition of heteroatoms to pristine carbon quantum dots (CQDs) change their structure and optical properties. In this study, fluorine (F)- and chlorine (Cl)-doped CQDs are prepared by the one-step green hydrothermal route from sodium fluoride, sodium chloride, urea, and citric acid as the starting precursors. Microscopy analysis reveals that the average size of these quantum dots is 5 ± 2 nm, whereas the chemical study shows the existence of C–F and C–Cl bonds. The produced F- and Cl-doped CQDs have fluorescence quantum yields of 0.151 and 0.284, respectively, at an excitation wavelength of 450 nm. Charge transfer resistance of F- and Cl-doped CQDs films is 2 orders of magnitude higher than in the pristine CQD films. Transport band gap of the doped CQDs is 2 eV bigger than that of pristine CQDs. Radical scavenging activity shows very good antioxidant activity of doped CQDs. Antibacterial testing reveals poor antibacterial activity against Staphylococcus aureus and Escherichia coli. The F- and Cl-doped CQDs are successfully used as fluorescent probes for cell imaging as shown by confocal microscopy.
T2 - ACS Sustainable Chemistry and Engineering
T1 - Highly Efficient Antioxidant F- and Cl-Doped Carbon Quantum Dots for Bioimaging
VL - 8
IS - 43
SP - 16327
EP - 16338
DO - 10.1021/acssuschemeng.0c06260
ER -
@article{
author = "Marković, Zoran M. and Labudová, Martina and Danko, Martin and Matijašević, Danka and Mičušík, Matej and Nádaždy, Vojtech and Kováčová, Mária and Kleinová, Angela and Špitalský, Zdeno and Pavlović, Vladimir B. and Milivojević, Dušan and Medić, Mina M. and Todorović-Marković, Biljana",
year = "2020",
abstract = "The addition of heteroatoms to pristine carbon quantum dots (CQDs) change their structure and optical properties. In this study, fluorine (F)- and chlorine (Cl)-doped CQDs are prepared by the one-step green hydrothermal route from sodium fluoride, sodium chloride, urea, and citric acid as the starting precursors. Microscopy analysis reveals that the average size of these quantum dots is 5 ± 2 nm, whereas the chemical study shows the existence of C–F and C–Cl bonds. The produced F- and Cl-doped CQDs have fluorescence quantum yields of 0.151 and 0.284, respectively, at an excitation wavelength of 450 nm. Charge transfer resistance of F- and Cl-doped CQDs films is 2 orders of magnitude higher than in the pristine CQD films. Transport band gap of the doped CQDs is 2 eV bigger than that of pristine CQDs. Radical scavenging activity shows very good antioxidant activity of doped CQDs. Antibacterial testing reveals poor antibacterial activity against Staphylococcus aureus and Escherichia coli. The F- and Cl-doped CQDs are successfully used as fluorescent probes for cell imaging as shown by confocal microscopy.",
journal = "ACS Sustainable Chemistry and Engineering",
title = "Highly Efficient Antioxidant F- and Cl-Doped Carbon Quantum Dots for Bioimaging",
volume = "8",
number = "43",
pages = "16327-16338",
doi = "10.1021/acssuschemeng.0c06260"
}
Marković, Z. M., Labudová, M., Danko, M., Matijašević, D., Mičušík, M., Nádaždy, V., Kováčová, M., Kleinová, A., Špitalský, Z., Pavlović, V. B., Milivojević, D., Medić, M. M.,& Todorović-Marković, B.. (2020). Highly Efficient Antioxidant F- and Cl-Doped Carbon Quantum Dots for Bioimaging. in ACS Sustainable Chemistry and Engineering, 8(43), 16327-16338.
https://doi.org/10.1021/acssuschemeng.0c06260
Marković ZM, Labudová M, Danko M, Matijašević D, Mičušík M, Nádaždy V, Kováčová M, Kleinová A, Špitalský Z, Pavlović VB, Milivojević D, Medić MM, Todorović-Marković B. Highly Efficient Antioxidant F- and Cl-Doped Carbon Quantum Dots for Bioimaging. in ACS Sustainable Chemistry and Engineering. 2020;8(43):16327-16338.
doi:10.1021/acssuschemeng.0c06260 .
Marković, Zoran M., Labudová, Martina, Danko, Martin, Matijašević, Danka, Mičušík, Matej, Nádaždy, Vojtech, Kováčová, Mária, Kleinová, Angela, Špitalský, Zdeno, Pavlović, Vladimir B., Milivojević, Dušan, Medić, Mina M., Todorović-Marković, Biljana, "Highly Efficient Antioxidant F- and Cl-Doped Carbon Quantum Dots for Bioimaging" in ACS Sustainable Chemistry and Engineering, 8, no. 43 (2020):16327-16338,
https://doi.org/10.1021/acssuschemeng.0c06260 . .
