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Propiedades de solución del grafito y el grafeno.
Sandip Niyogi1, Elena Bekyarova, Mikhail E Itkis
1Department of Chemistry, Center for Nanoscale Science and Engineering, University of California, Riverside, California 92521-0403, USA.
Journal of the American Chemical Society
|June 15, 2006
Resumen
El grafito oxidado se vuelve soluble en disolventes orgánicos después de la derivación con octadecilamina. Este avance permite el estudio de las propiedades de solución de láminas de grafeno de una sola y pocas capas.
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:
- El grafito, un material en capas, es típicamente insoluble en solventes comunes.
- La funcionalización es una estrategia clave para impartir solubilidad y procesamiento a los materiales de carbono.
Objetivo del estudio:
- Desarrollar un método para solubilizar el grafito oxidado.
- Para caracterizar las especies de grafeno soluble resultantes.
- Para investigar las propiedades de solución del grafito.
Principales métodos:
- Derivación covalente de grupos funcionales ácidos en grafito oxidado utilizando octadecilamina.
- Solubilización en disolventes orgánicos comunes.
- Microscopía de fuerza atómica (AFM) para la caracterización de las especies solubles.
Principales resultados:
- El éxito de la derivación covalente hizo que el grafito oxidado fuera soluble en disolventes orgánicos.
- La caracterización de AFM confirmó la presencia de láminas de grafeno de una sola y pocas capas en solución.
- Este estudio informa la primera observación de las propiedades de solución para el grafito.
Conclusiones:
- La derivación de octadecilamina es un método eficaz para lograr la solubilidad del grafito oxidado.
- Las especies solubles son predominantemente placas de grafeno individuales y de pocas capas.
- Este trabajo abre nuevas vías para explorar el grafito y el grafeno en aplicaciones basadas en soluciones.
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