El siguiente capítulo de las estrategias de pilares de MOF: ligandos heterofuncionales trigonales para acceder a redes tridimensionales altamente conectadas específicas, plataformas isoreticulares
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Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Jarrod F Eubank1, Lukasz Wojtas, Matthew R Hight
1Department of Chemistry, University of South Florida, 4202 East Fowler Avenue (CHE 205), Tampa, Florida 33620, United States.
Journal of the American Chemical Society
|June 17, 2011
Resumen
Una nueva estrategia de pilares permite la creación de marcos metal-orgánicos (MOF) de mayor dimensión. Este enfoque ligando-axial combina los métodos existentes para el diseño de MOF con cavidades grandes y sintonizables.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Química Química es la química.
- La cristalografía es una técnica de cristalografía.
Sus antecedentes:
- Las estructuras metálicas orgánicas (MOF) son materiales porosos versátiles con aplicaciones en el almacenamiento, separación y catálisis de gases.
- Las estrategias de síntesis MOF actuales, como los enfoques axial-axial y ligando-ligando, tienen limitaciones en la construcción de estructuras de mayor dimensión.
- El desarrollo de nuevas metodologías sintéticas es crucial para acceder a nuevas arquitecturas MOF con propiedades mejoradas.
Objetivo del estudio:
- Introducir y validar una nueva estrategia de pilares para la síntesis de MOF.
- Para permitir el diseño y la construcción de MOFs de mayor dimensión.
- Para crear MOFs con grandes cavidades sintonizables y plataformas isoreticulares.
Principales métodos:
- Se empleó una estrategia de pilar ligando-axial, combinando técnicas axial-axial y ligando-ligando.
- Se diseñaron y sintetizaron ligandos heterofuncionales trigonales, con núcleos de ácido isoftálico con porciones N-donantes.
- Estos ligandos se utilizaron para sostener capas bidimensionales preexistentes (capas de construcción supermoleculares, SBL) con Kagomé y celosías cuadradas.
Principales resultados:
- La nueva estrategia facilitó con éxito la construcción de MOFs de mayor dimensión.
- Los MOFs sintetizados exhiben grandes cavidades sintonizables, adecuadas para diversas aplicaciones.
- Se lograron plataformas isoreticulares, lo que permite la modificación sistemática de las propiedades de MOF.
Conclusiones:
- La estrategia de pilar ligando-axial es una herramienta poderosa para el diseño y la síntesis de MOF.
- Este método permite la creación de MOFs complejos y de mayor dimensión con tamaños de poro a medida.
- Los MOF desarrollados ofrecen potencial para aplicaciones avanzadas que requieren estructuras porosas grandes y ajustables.
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