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Materiales imprimibles en 3D con fotocromismo activado por luz visible y fosforescencia a temperatura ambiente

Yuxin Xiao¹, Jiahui Li¹, Zihe Song¹

¹Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics & Xi'an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.

Journal of the American Chemical Society

|June 6, 2025

Resumen

Los investigadores desarrollaron nuevos materiales sensibles a la luz visible que exhiben tanto fotocromismo como fosforescencia a temperatura ambiente (RTP). Estos materiales de doble función, fabricados mediante impresión 3D, ofrecen nuevas posibilidades para aplicaciones ópticas avanzadas y almacenamiento de datos.

Área de la Ciencia:

Materiales funcionales orgánicos
La fotofísica
Ciencias de los materiales

Sus antecedentes:

Los materiales sensibles a la luz son cruciales para las aplicaciones ópticas.
Los materiales existentes a menudo dependen de la luz UV y ofrecen una sola funcionalidad.
Los materiales funcionales activados por luz visible son escasos.

Objetivo del estudio:

Diseñar y sintetizar nuevos materiales de trifeniletileno con propiedades fotocrómicas y de fosforescencia a temperatura ambiente (RTP) activadas por la luz visible.
Explorar el impacto del diseño molecular en las propiedades ópticas.
Para fabricar estructuras 3D utilizando estos materiales a través de la impresión 3D.

Principales métodos:

Diseño molecular que incorpora el dibenzotiofeno en el esqueleto del trifeniletileno.
La rigidez local y las estrategias de anfitrión-invitado.
Impresión en 3D mediante procesamiento digital de la luz (DLP).
Análisis espectroscópico para estudiar el fotocromismo y la RTP.

Principales resultados:

Se han sintetizado con éxito tres derivados de trifeniletileno que muestran fotocromismo y RTP desencadenados por la luz visible.
La conjugación π extendida y el diseño molecular condujeron a una absorción y excitación desplazadas al rojo.
Los halógenos y las estructuras retorcidas facilitaron las interacciones intermoleculares, estabilizando los excitones triplet para la doble funcionalidad.
Demostró la viabilidad de crear estructuras impresas en 3D individualizadas.

Conclusiones:

Desarrolló una estrategia para crear materiales fotosensibles de doble función que combinan fotocromismo y RTP.
Destacó el potencial de los materiales activados por luz visible para aplicaciones ópticas avanzadas.
Proporcionó información sobre el almacenamiento de información multicanal óptico de alta resolución.

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