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Síntesis multicomponente de un marco orgánico covalente ligado al butadieno-1,3

Yan Su¹, Bo Li², Hong Xu³

¹State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China.

Journal of the American Chemical Society

|September 7, 2022

Resumen

Los investigadores desarrollaron una nueva síntesis de múltiples componentes para un marco orgánico covalente de buta-1,3-dieno (COF) sustituido por ciano. Este nuevo COF demuestra una fotocatálisis eficiente para las reacciones de oxidación aeróbica bajo luz visible.

Área de la Ciencia:

Ciencias de los materiales
Química orgánica
Nanotecnología

Sus antecedentes:

Las estructuras orgánicas covalentes (COF) son polímeros porosos cristalinos con diversas aplicaciones.
La síntesis tradicional de COF a menudo implica reacciones de condensación entre dos componentes.
El logro de la diversidad estructural y la variabilidad funcional en los FOC puede ser un reto.

Objetivo del estudio:

Desarrollar una estrategia sintética multicomponente para un nuevo marco orgánico covalente cristalino bidimensional (COF).
Investigar la fotoactividad y las propiedades fotocatalíticas del COF buta-1,3-dieno sintetizado.
Explorar nuevas vías para crear FOC estructuralmente diversas y funcionalmente variables.

Principales métodos:

Una reacción multicomponente que involucra fracciones de acetonitrilo, aldehído aromático y acetaldehído.
Cristalización de un marco orgánico covalente bidimensional con un enlace buta-1,3-dieno sustituido por ciano.
Caracterización de la fotoactividad del COF, incluidas las mediciones de la energía de unión al excitón.

Principales resultados:

Se sintetizó con éxito un COF buta-1,3-dieno sin precedentes sustituido por ciano a través de una estrategia de múltiples componentes que involucra tres fracciones reactivas.
El COF de buta-1,3-dieno presenta una baja energía de unión al excitón (44,4 ± 1,5 meV), lo que promueve una separación de carga eficiente.
El COF sintetizado demostró una alta eficiencia como fotocatalizador para varias reacciones de oxidación aeróbica bajo luz visible.

Conclusiones:

La estrategia de síntesis multicomponente ofrece un nuevo enfoque para la creación de FOC con mayor diversidad estructural y variabilidad funcional.
El nuevo buta-1,3-dieno COF sustituido por ciano muestra un potencial significativo como fotocatalizador impulsado por la luz visible.
Este trabajo amplía la caja de herramientas sintéticas para marcos orgánicos covalentes avanzados.

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