Sulfur‐Doped Carbon Dots as a Highly Selective and Sensitive Fluorescent Probe for Copper Ion Detection in Biological Systems DOI Creative Commons

Minyoung Jin,

Sang-Hee Lee,

Seong Hoon Lim

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Copper ions are regarded as a double‐edged sword since it plays crucial role in biological functions but can also induce various severe diseases at imbalanced levels. However, conventional methods for quantifying copper ion (Cu 2+ ) levels often encounter complicated preparation procedures and interference from other substances. This study describes the one‐pot microwave synthesis of sulfur‐doped carbon dot (S_HICA) highly selective sensitive fluorescent probe Cu detection systems. S_HICA demonstrates improved fluorescence properties such increased intensity red‐shifted emission wavelength compared to dots without sulfur (HICA), exhibits outstanding selectivity through quenching effect. In vitro ex vivo experiments performed validate S_HICA, revealing that has remarkable biocompatibility, stability, tolerance varying pH presents significant potential detecting with elevated sensitivity selectivity, well advancement enhanced diagnostic tools monitor copper‐related disorders real time.

Language: Английский

Effect of Concentration and pH on the Photoluminescent Properties of CQDs Obtained from Actinidia deliciosa DOI Creative Commons
Carlos Alfredo Zamora-Valencia, María Isabel Reyes-Valderrama, L. Escobar‐Alarcón

et al.

Crystals, Journal Year: 2025, Volume and Issue: 15(3), P. 206 - 206

Published: Feb. 21, 2025

This study investigates the synthesis and photoluminescent properties of carbon quantum dots (CQDs) derived from Actinidia deliciosa using hydrothermal method. The effect concentration pH on composition, structure, optical CQDs was analyzed characterization techniques such as TEM, EDS, FTIR, UV-Vis, photoluminescence (PL) spectroscopy. exhibited particle sizes ranging 1 to 10 nm, with a graphitic structure oxygen-containing functional groups, identified by FTIR bands corresponding OH, C=O, C=C. stability analysis revealed agglomeration over 30 days, increasing size up <40 nm. Regarding properties, displayed absorption peaks at 225 280 nm bandgap ~3.78–3.82 eV. PL demonstrated tunable emission violet green, depending excitation wavelength. synthesized an acidic 2 enhanced luminescence due protonation effects, whereas alkaline led reduction in intensity. method enabled simple eco-friendly synthesis, water sole solvent, yielding stable lifespan exceeding days. Their electronic make them promising candidates for photocatalysis, heavy metal detection, bioimaging applications.

Language: Английский

Citations

0
Sulfur‐Doped Carbon Dots as a Highly Selective and Sensitive Fluorescent Probe for Copper Ion Detection in Biological Systems DOI Creative Commons

Minyoung Jin,

Sang-Hee Lee,

Seong Hoon Lim

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Copper ions are regarded as a double‐edged sword since it plays crucial role in biological functions but can also induce various severe diseases at imbalanced levels. However, conventional methods for quantifying copper ion (Cu 2+ ) levels often encounter complicated preparation procedures and interference from other substances. This study describes the one‐pot microwave synthesis of sulfur‐doped carbon dot (S_HICA) highly selective sensitive fluorescent probe Cu detection systems. S_HICA demonstrates improved fluorescence properties such increased intensity red‐shifted emission wavelength compared to dots without sulfur (HICA), exhibits outstanding selectivity through quenching effect. In vitro ex vivo experiments performed validate S_HICA, revealing that has remarkable biocompatibility, stability, tolerance varying pH presents significant potential detecting with elevated sensitivity selectivity, well advancement enhanced diagnostic tools monitor copper‐related disorders real time.

Language: Английский

Citations

0