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La transferencia de fase de poliedros orgánicos basados en el rodio permite la separación molecular
Thais Grancha1, Arnau Carné-Sánchez1, Laura Hernández-López1
1Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, 08193 Barcelona , Spain.
Journal of the American Chemical Society
|October 25, 2019
Resumen
Desarrollamos un nuevo método de transferencia de fase para poliedros metálicos orgánicos porosos (MOP). Esta técnica permite el transporte de carga molecular entre fases inmiscibles, lo que facilita las separaciones químicas y nuevas aplicaciones para los MOP.
Área de la Ciencia:
- Ciencias de los materiales
- Química supramolecular
- Nanotecnología
Sus antecedentes:
- La transferencia de fase de nanopartículas entre líquidos inmiscibles se puede lograr mediante la modificación de la superficie.
- Este proceso mejora el procesamiento de nanopartículas y permite el transporte de carga.
- La extensión de la transferencia de fase a materiales porosos como los poliedros metálico-orgánicos (MOP) sigue siendo inexplorada.
Objetivo del estudio:
- Investigar las capacidades de transferencia de fase de los poliedros metálicos orgánicos porosos (MOP).
- Demostrar el uso de MOP para el transporte de carga molecular entre fases inmiscibles.
- Explorar la aplicación de la transferencia de fase mediada por MOP en las separaciones químicas.
Principales métodos:
- Sintetizó un MOP cuboctaédrico basado en Rh (II) funcionalizado por hidroxilo.
- Transferencia de fase inducida del MOP entre fases inmiscibles mediante cambios de pH y reacciones de intercambio catiónico.
- Utilizó el MOP para transportar carga unida coordinadamente entre las fases líquidas.
Principales resultados:
- Se logró con éxito la transferencia de fase del MOP basado en Rh (II) mediante la alteración del pH y el uso de intercambio catiónico.
- Demostró la capacidad del MOP para transportar carga unida coordinadamente en disolventes insolubles.
- Se separó una mezcla de compuestos alifáticos y aromáticos cíclicos estructuralmente similares utilizando el sistema de transferencia de fase MOP.
Conclusiones:
- La transferencia de fase de poliedros metálicos orgánicos porosos es factible y controlable.
- Los MOP pueden servir como vehículos efectivos para el transporte de carga molecular a través de los límites de fase.
- Este enfoque ofrece una nueva plataforma para la separación molecular basada en la afinidad de coordinación.
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