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Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Estructura cristalina, disolución y deposición de un gran rhombicuboctaedro metálico orgánico funcionalizado de 5 nm
Hiroyasu Furukawa1, Jaheon Kim, Katherine E Plass
1Department of Chemistry and Biochemistry and Center for Reticular Materials Research at the California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA. furukawa@chem.ucla.edu
Journal of the American Chemical Society
|June 29, 2006
Resumen
Un nuevo marco metal-orgánico, MOP-18, fue sintetizado y funcionalizado con cadenas de alquilo. Su solubilidad en disolventes orgánicos permitió un ensamblaje exitoso y la obtención de imágenes en una superficie de grafito utilizando microscopía de túnel de barrido.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Nanotecnología La nanotecnología es la nanotecnología.
- Química Química es la química.
Sus antecedentes:
- Las estructuras metal-orgánicas (MOF) ofrecen propiedades sintonizables para aplicaciones avanzadas.
- La funcionalización de los MOF es crucial para adaptar su solubilidad y procesamiento.
- El ensamblaje superficial de MOFs permite la fabricación de dispositivos a nanoescala.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo marco metálico-orgánico (MOP-18) con características estructurales específicas.
- Investigar la solubilidad y procesamiento del MOF funcionalizado.
- Para demostrar el ensamblaje superficial e imágenes de MOP-18 en un sustrato de grafito.
Principales métodos:
- Síntesis de un gran rombicuboctaedro metálico-orgánico (MOP-18) utilizando unidades de rueda de paleta Cu2(CO2)4 y enlaces dodecox ybenceno-1,3-dicarboxilato.
- Funcionalización de MOP-18 con cadenas de alquilo extendidas para mejorar la solubilidad.
- Cristalización y caracterización del MOF funcionalizado.
- Prueba de solubilidad en disolventes orgánicos (THF, cloroformo, tolueno).
- Ensamblaje superficial en grafito y observación a través del microscopio de túnel de barrido (STM).
Principales resultados:
- Síntesis y cristalización exitosas de MOP-18, un marco metálico-orgánico con una gran estructura de rhombicuboctaedro.
- La funcionalización con cadenas de alquilo hizo que el MOP-18 fuera soluble en solventes orgánicos comunes.
- Se demostró el ensamblaje exitoso de MOP-18 en un sustrato de grafito.
- Logró imágenes de alta resolución del MOP-18 ensamblado utilizando microscopía de túnel de barrido.
Conclusiones:
- El MOP-18 sintetizado es un marco metal-orgánico procesable debido a la funcionalización de la cadena de alquilo.
- Los MOF solubles se pueden ensamblar efectivamente en superficies para aplicaciones a nanoescala.
- El STM es una técnica viable para la caracterización de MOFs de superficie.
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