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El transporte de electrones y la electroquímica de los fullerenos mesomórficos con lamelas ordenadas de largo alcance
Takashi Nakanishi1, Yanfei Shen, Jiaobing Wang
1National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan. nakanishi.takashi@nims.go.jp
Journal of the American Chemical Society
|June 28, 2008
Resumen
Los fullerenos modificados con largas cadenas alquilo crean estructuras ordenadas con alto contenido de fullereno. Estos materiales muestran electroquímica reversible y alta movilidad de electrones para materiales blandos avanzados.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Química orgánica es la química orgánica.
- Nanotecnología La nanotecnología es la nanotecnología.
Sus antecedentes:
- Los fullerenos, como el C60, son alótropos de carbono con propiedades electrónicas únicas.
- El desarrollo de estructuras de fullereno ordenadas es clave para las aplicaciones de materiales avanzados.
- La funcionalización de los fullerenos puede ajustar su autoensamblaje y propiedades.
Objetivo del estudio:
- Para sintetizar y caracterizar derivados de fullereno con largas cadenas de alquilo.
- Para investigar el comportamiento de autoensamblaje y la formación de la mesofase de estos fullerenos modificados.
- Para evaluar las propiedades electroquímicas y la movilidad del portador de electrones de los materiales resultantes.
Principales métodos:
- Síntesis química de C60 funcionalizado con largas cadenas de alquilo.
- Difracción de rayos X (XRD) para analizar la formación y el ordenamiento de la mesofase lamelar.
- Voltametría cíclica para evaluar la reversibilidad electroquímica.
- Mediciones de conductividad eléctrica para determinar la movilidad del portador de electrones.
Principales resultados:
- La modificación de la cadena de alquilo larga de C60 conduce a la formación de mesofasas lamelares ordenadas de largo alcance.
- Estas mesofasas exhiben un alto contenido de moléculas C60.
- Los fullerenos mesomórficos muestran una electroquímica reversible.
- Se observó una movilidad del portador de electrones comparativamente alta en estas estructuras ordenadas.
Conclusiones:
- La funcionalización de la cadena de alquilo es una estrategia efectiva para inducir el autoensamblaje y el orden de largo alcance en fullerenos.
- Las mesofasas basadas en fullereno resultantes poseen propiedades electrónicas favorables para aplicaciones.
- Estos materiales son prometedores para el desarrollo de materiales electrónicos blandos avanzados basados en fullereno.
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