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Estímulo-responsivo y estructura-adaptiva de oro en tres dimensiones (I) Jaulas de racimo construidas a través de la
Liang-Liang Yan1, Liao-Yuan Yao1, Maggie Ng1
1Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China.
Journal of the American Chemical Society
|November 4, 2021
Resumen
Los investigadores desarrollaron una nueva estrategia "de-aurofílica" para crear jaulas adaptativas tridimensionales de oro. Estas jaulas supramoleculares únicas exhiben transformaciones que responden a estímulos, imitando procesos biológicos.
Área de la Ciencia:
- Química supramolecular
- Química inorgánica
- Ciencias de los materiales
Sus antecedentes:
- Las jaulas metalosupramoleculares tridimensionales (3D) son dinámicas y reversibles debido a los enlaces de coordinación.
- Estas jaulas ofrecen un potencial para los sistemas de respuesta a estímulos que imitan los procesos biológicos.
- La construcción de jaulas 3D de oro es un desafío debido a las interacciones aerofílicas.
Objetivo del estudio:
- Desarrollar una nueva estrategia para la construcción de jaulas de oro en 3D.
- Para crear jaulas supramoleculares adaptativas con propiedades de respuesta a los estímulos.
- Para explorar la interconversión estructural de estas jaulas de oro.
Principales métodos:
- Propuso una estrategia de interacción "des-aurofílica" para evitar el enlace oro-oro.
- Utilizó un diseño juicioso de ligandos de difosfina.
- Se han investigado las transformaciones estructurales y las interconversiones sensibles a los estímulos.
Principales resultados:
- Se han construido con éxito jaulas de cluster en oro 3D sin precedentes con estructuras adaptativas.
- Se ha demostrado una intrigante transformación y interconversión de estructuras sensibles a estímulos.
- La estrategia "de-aurofílica" permitió la formación de jaulas al prevenir las interacciones aurofílicas.
Conclusiones:
- La estrategia "de-aurofílica" es efectiva para diseñar y construir nuevas jaulas supramoleculares 3D basadas en nodos de racimo.
- Estas jaulas de clúster de oro proporcionan una nueva plataforma para estudiar las interconversiones estructurales sensibles a los estímulos.
- Este trabajo abre caminos para crear materiales supramoleculares avanzados con propiedades sintonizables.
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