Superelastic N-centered carbon quantum dots: Synthesis and characterization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00384072" target="_blank" >RIV/68407700:21230/25:00384072 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.diamond.2025.112568" target="_blank" >https://doi.org/10.1016/j.diamond.2025.112568</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.diamond.2025.112568" target="_blank" >10.1016/j.diamond.2025.112568</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Superelastic N-centered carbon quantum dots: Synthesis and characterization

Popis výsledku v původním jazyce

Carbon quantum dots (CQDs) have highly promising properties for variety of applications as a new family member of carbon-based nanomaterials. In this paper, CQDs were synthetized by solvothermal method using nicotinamide as precursor. For the first time, we report on electron paramagnetic resonance (EPR) active CQDs with numerous unpaired N radicals at the edges of CQDs. Nanomechanical measurements revealed internal structure of CQDs that are more elastic than single wall carbon nanotubes (SWCNTs). Electrostatic force microscopy showed average amount of electrons in CQDs core and positive charge at the edges. Polymer nanocomposites based on CQDs were not cytotoxic and hemolytic whereas antibacterial testing shown good antibacterial activity. Reactive oxygen species production measurements indicated that nanocomposites were highly potent generators of reactive oxygen species with singlet oxygen yield of 0.68 and promising materials for application in biomedicine.

Název v anglickém jazyce

Superelastic N-centered carbon quantum dots: Synthesis and characterization

Popis výsledku anglicky

Carbon quantum dots (CQDs) have highly promising properties for variety of applications as a new family member of carbon-based nanomaterials. In this paper, CQDs were synthetized by solvothermal method using nicotinamide as precursor. For the first time, we report on electron paramagnetic resonance (EPR) active CQDs with numerous unpaired N radicals at the edges of CQDs. Nanomechanical measurements revealed internal structure of CQDs that are more elastic than single wall carbon nanotubes (SWCNTs). Electrostatic force microscopy showed average amount of electrons in CQDs core and positive charge at the edges. Polymer nanocomposites based on CQDs were not cytotoxic and hemolytic whereas antibacterial testing shown good antibacterial activity. Reactive oxygen species production measurements indicated that nanocomposites were highly potent generators of reactive oxygen species with singlet oxygen yield of 0.68 and promising materials for application in biomedicine.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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

Diamond and Related Materials

ISSN

0925-9635

e-ISSN

1879-0062

Svazek periodika

157

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

001520233100001

EID výsledku v databázi Scopus

2-s2.0-105008515198