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Transformación de moléculas a puntos de carbono mediante microondas de abajo hacia arriba para aplicaciones de
Arun Annamalai1,2, Sundaravadivel Elumalai3, Sambasivam Sangaraju2
1Department of Chemistry, United Arab Emirates University Al Ain 15551 United Arab Emirates f.hassan@uaeu.ac.ae.
RSC advances
|January 23, 2026
Resumen
Desarrollamos puntos de carbono (CD) fluorescentes de bajo costo para detectar contaminantes del agua como Cr6+ y doxiciclina. Estos CD estables ofrecen una detección sensible y también se pueden utilizar para el transporte seguro de información.
Área de la Ciencia:
- Ciencia de los Materiales
- Ciencias Ambientales
- Química Analítica
Sus antecedentes:
- El desarrollo de materiales fluorescentes estables y rentables es crucial para la monitorización ambiental y la salud pública.
- Los contaminantes del agua carcinogénicos y los residuos de antibióticos plantean riesgos significativos.
- Se necesitan nuevos sensores fluorescentes para una detección sensible y selectiva.
Objetivo del estudio:
- Sintetizar y caracterizar nuevos puntos de carbono (CD) para la detección de contaminantes del agua.
- Evaluar la estabilidad y sensibilidad de los CD sintetizados.
- Explorar las aplicaciones multifuncionales de los CD en la detección ambiental y la seguridad de la información.
Principales métodos:
- Síntesis fácil y de un solo paso asistida por microondas de CD a partir de ácido tartárico y di-aminopropano.
- Caracterización mediante UV-Vis, tiempo de vida de PL, HR-TEM, XRD, XPS y FT-IR.
- Detección de Cr6+ y doxiciclina mediante espectroscopia de fluorescencia.
Principales resultados:
- Sintetizamos CD estables con núcleo uniforme y superficie rica en electrones.
- Observamos propiedades de fluorescencia dependientes e independientes de la excitación.
- Logramos límites de detección bajos para Cr6+ (0.14 µM) y doxiciclina (0.09 µM).
- Demostramos sensibilidad retenida en matrices ambientales complejas.
- Mostramos la aplicación en tinta fluorescente para la seguridad de la información.
Conclusiones:
- Los CD sintetizados son sensores fluorescentes eficaces, estables y de bajo costo para Cr6+ y doxiciclina.
- Los CD exhiben capacidades multifuncionales para la monitorización ambiental y aplicaciones de lucha contra la falsificación.
- Este trabajo presenta una plataforma prometedora para el desarrollo de materiales avanzados de detección y seguridad.
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