Carbon dots synthesization via graphite laser ablation in biocompatible solution

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00619574" target="_blank" >RIV/61389005:_____/25:00619574 - isvavai.cz</a>
Result on the web
<a href="https://www.tandfonline.com/doi/full/10.1080/10420150.2025.2475367" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/10420150.2025.2475367</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/10420150.2025.2475367" target="_blank" >10.1080/10420150.2025.2475367</a>

Result language
angličtina
Original language name
Carbon dots synthesization via graphite laser ablation in biocompatible solution
Original language description
Photoluminescent carbon dots (CDs) have been synthesized via laser ablation of graphite targets placed in biocompatible liquids. A Nd:YAG pulsed laser, 3 ns pulse duration, and 100 mJ pulse energy have been employed to irradiate graphite at a 1 Hz repetition rate in a phosphate-buffered saline (PBS) solution with water. The laser ablation yield was 77 ng/pulse, of which about 10% of the ablated mass is represented by synthesized CDs, Results demonstrated that the CDs dispersion is luminescent under UV excitation light at 365 nm. At high laser fluence, of about 20 J/cm2, using a low spot size, the luminescence is due to a band in the blue region around about 475 nm with a width of about 80 nm. Decreasing the laser fluence, by increasing the spot size, it is possible to change the luminescence emission band shifting it to the green-yellow or the red region. The luminescence depends on the type of solution used, the CDs concentration, pH value, temperature and others. The produced CDs dispersion finds interesting applications in biology and medicine as will be presented and discussed.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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