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Copolímeros alternos de poli-p-fenileno fosfina/polianilina: deslocalización electrónica a través del fósforo en su
1Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, USA.
Journal of the American Chemical Society
|April 14, 2005
Resumen
Los nuevos copolímeros de poli (N-arylanilina) (PANI) que contienen fósforo muestran pi-conjugación y deslocalización electrónica a través del fósforo. Estos nuevos polímeros muestran potencial para aplicaciones electrónicas avanzadas debido a sus propiedades únicas.
Área de la Ciencia:
- Química de Polímeros La Química de Polímeros es la química de los polímeros.
- Ciencia de los materiales Ciencia de los materiales.
- Electrónica orgánica y electrónica orgánica.
Sus antecedentes:
- Las poli (N-arylanilinas) son conocidas por sus propiedades electrónicas.
- La incorporación de fósforo en las columnas vertebrales de polímeros ofrece nuevas vías para afinar el comportamiento electrónico.
Objetivo del estudio:
- Para sintetizar y caracterizar el nuevo fósforo que contiene poli (N-arylanilina) s (PANI).
- Investigar el impacto de los enlaces de fósforo en las propiedades electrónicas y espectroscópicas de los copolímeros PANI.
- Explorar el potencial para la deslocalización electrónica a través de los átomos de fósforo en estos polímeros.
Principales métodos:
- Síntesis de copolímeros y compuestos modelo de PANI que contienen fósforo.
- Espectroscopia UV-vis-NIR para el análisis de propiedades electrónicas.
- Voltametría cíclica para la investigación electroquímica.
Principales resultados:
- Los copolímeros PPPP-PANI con unidades de p-fenilenodiamina mostraron propiedades típicas de las diaminas aromáticas.
- Los copolímeros con enlaces específicos que contienen fósforo (- ((-P-C ((6) H ((4) -N-C ((6) H ((4))) exhibieron una fuerte deslocalización electrónica.
- El fósforo (III) fosfina a fósforo (V) la conversión de óxido de fosfina inhibió la deslocalización, confirmando la participación del par solitario.
Conclusiones:
- Los copolímeros PANI que contienen fósforo representan una nueva clase de polímeros pi-conjugados.
- La deslocalización electrónica ocurre a través de puentes de fósforo en estructuras específicas de copolímero.
- Estos materiales poseen bajos potenciales de oxidación, lo que sugiere su utilidad en dispositivos electrónicos.
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