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Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
La carbonización a temperatura ambiente del poli (diodiacetileno) por reacción con las bases de Lewis
Liang Luo1, Daniel Resch, Christopher Wilhelm
1Department of Chemistry, State University of New York, Stony Brook, New York 11794, USA.
Journal of the American Chemical Society
|November 1, 2011
Resumen
Este estudio muestra que reaccionando el polidiodiacetileno (PIDA) con una base de Lewis se convierte en nanomateriales de carbono grafítico conductor. Este nuevo método de deshalogenación funciona a temperatura ambiente bajo condiciones suaves.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Química de Polímeros La Química de Polímeros es la química de los polímeros.
- Nanotecnología La nanotecnología es la nanotecnología.
Sus antecedentes:
- El polidiododiacetileno (PIDA) es un polímero conjugado con una columna vertebral de carbono y sustitutos de yodo.
- Los métodos actuales para producir nanomateriales de carbono a menudo requieren condiciones duras.
Objetivo del estudio:
- Para investigar la reacción de PIDA con las bases de Lewis.
- Explorar un nuevo método para sintetizar nanomateriales de carbono.
Principales métodos:
- Tratamiento de la suspensión de PIDA con bases de Lewis (por ejemplo, pirrolidina) a temperatura ambiente.
- Análisis espectroscópico (UV-Vis, Raman) de los productos de la reacción.
- Mediciones de conductividad eléctrica.
Principales resultados:
- PIDA desaparece rápidamente, seguido por la liberación de yodo libre.
- Se forma un material sólido consistente con el carbono grafítico.
- El material resultante exhibe una conductividad eléctrica significativamente mayor en comparación con PIDA.
- Se descubrió una nueva reacción general para la deshalogenación mediada por bases de Lewis de diiodoalquenos a alquinas.
Conclusiones:
- El tratamiento de base de Lewis de PIDA ofrece un método suave a temperatura ambiente para la deshalogenación.
- Este proceso produce nanomateriales de carbono grafíticos conductores.
- La reacción de eliminación de yodo descubierta tiene implicaciones más amplias para la síntesis orgánica.
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