Carbon dots synthesization via graphite laser ablation in biocompatible solution

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Carbon dots synthesization via graphite laser ablation in biocompatible solution

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Carbon dots synthesization via graphite laser ablation in biocompatible solution

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Radiation Effects and Defects in Solids

ISSN

1042-0150

e-ISSN

1029-4953

Svazek periodika

180

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

180-189

Kód UT WoS článku

001479610700013

EID výsledku v databázi Scopus

2-s2.0-105004169616