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Influencia de la fluoración de la espina dorsal en las regiones de los poli- (3-alquilo-4-fluoro) tiofenos regulares
Zhuping Fei1, Pierre Boufflet1, Sebastian Wood2
1†Department of Chemistry and Centre for Plastic Electronics, Imperial College London, Exhibition Rd, London SW7 2AZ, U.K.
Journal of the American Chemical Society
|May 22, 2015
Resumen
Hemos sintetizado politiofenos fluorados con una movilidad mejorada del portador de carga. La fluoración de la columna vertebral aumenta el potencial de ionización y la agregación, mejorando el rendimiento en los transistores de efecto de campo.
Área de la Ciencia:
- La electrónica orgánica es la electrónica orgánica.
- Química de los polímeros La química de los polímeros es la química de los polímeros.
- Ciencia de los materiales ciencia de los materiales.
Sus antecedentes:
- Los poli ((3-alquilo) tiofenos son semiconductores orgánicos ampliamente estudiados.
- La fluoración es una estrategia para ajustar las propiedades electrónicas de los materiales orgánicos.
Objetivo del estudio:
- Para sintetizar nuevos monómeros y polímeros de 3-alquilo-4-fluorotiofeno.
- Para investigar el impacto de la fluoración de la columna vertebral en las propiedades y el rendimiento del polímero.
Principales métodos:
- Síntesis de monómeros dibromados y reacciones regioselectivas de Grignard.
- La polimerización de los monómeros fluorados.
- Caracterización de las propiedades del polímero (óptica, de agregación, electrónica).
- Fabricación y caracterización de dispositivos (transistores de efecto de campo).
Principales resultados:
- Se han sintetizado con éxito los poli{3-alquilo-4-fluoro) tiofenos regiorregulares.
- La fluoración aumentó el potencial de ionización y la agregación de soluciones.
- Los cálculos de Raman y DFT indicaron una columna vertebral más coplanar en los polímeros fluorados.
- La movilidad del portador de carga en los transistores de efecto de campo aumentó hasta cinco veces para los polímeros fluorados.
Conclusiones:
- La fluoración de la columna vertebral es una estrategia efectiva para mejorar el rendimiento de la electrónica orgánica a base de politiofeno.
- Las mejoras observadas están relacionadas con propiedades electrónicas alteradas y empaque molecular.
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