Heterostructures of CdSe Quantum Dots and g-C3N4 Applied as Electrochemiluminescent Probes for the Detection of Hydrogen Peroxide in Human Serum DOI Creative Commons

Roodney A. Carrillo Palomino,

Aylén Di Tocco, Gastón Darío Pierini

et al.

Chemosensors, Journal Year: 2025, Volume and Issue: 13(5), P. 171 - 171

Published: May 7, 2025

In this work, we developed a highly sensitive and reproducible electrochemiluminescent sensor based on heterostructure of cadmium selenide quantum dots capped with 3-mercaptopropionic acid (MPA) + 3-morpholinoethanesulfonic (MES) (QDs CdSe) carbon nitride nanosheets (g-C3N4) for the detection H2O2 in lyophilized serum samples. To enhance sensitivity, g-C3N4 were utilized as platform to immobilize QDs CdSe. An exhaustive characterization was conducted, elucidating interaction mechanism between CdSe g-C3N4. It revealed that acts hole (h+) donor, while act energy acceptors resonance transfer process, electrochemiluminescence emission originating from The intensity decreases presence due deactivation excited states This demonstrates exceptional performance detecting aqueous systems, achieving remarkably low limit (LOD) 1.81 nM, which is more than most reported sensors detect H2O2. applicability successfully tested where sub-µM levels accurately quantified. These results highlight potential reliable pre-treatment-free tool biochemical studies human health applications.

Language: Английский

Heterostructures of CdSe Quantum Dots and g-C3N4 Applied as Electrochemiluminescent Probes for the Detection of Hydrogen Peroxide in Human Serum DOI Creative Commons

Roodney A. Carrillo Palomino,

Aylén Di Tocco, Gastón Darío Pierini

et al.

Chemosensors, Journal Year: 2025, Volume and Issue: 13(5), P. 171 - 171

Published: May 7, 2025

In this work, we developed a highly sensitive and reproducible electrochemiluminescent sensor based on heterostructure of cadmium selenide quantum dots capped with 3-mercaptopropionic acid (MPA) + 3-morpholinoethanesulfonic (MES) (QDs CdSe) carbon nitride nanosheets (g-C3N4) for the detection H2O2 in lyophilized serum samples. To enhance sensitivity, g-C3N4 were utilized as platform to immobilize QDs CdSe. An exhaustive characterization was conducted, elucidating interaction mechanism between CdSe g-C3N4. It revealed that acts hole (h+) donor, while act energy acceptors resonance transfer process, electrochemiluminescence emission originating from The intensity decreases presence due deactivation excited states This demonstrates exceptional performance detecting aqueous systems, achieving remarkably low limit (LOD) 1.81 nM, which is more than most reported sensors detect H2O2. applicability successfully tested where sub-µM levels accurately quantified. These results highlight potential reliable pre-treatment-free tool biochemical studies human health applications.

Language: Английский

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