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Poly ((pyridinium phenylene) s: son polímeros de tipo N, solubles en agua, que se encuentran en el mismo tipo de
Daisuke Izuhara1, Timothy M Swager
1Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
Journal of the American Chemical Society
|November 21, 2009
Resumen
Los nuevos polímeros conjugados de poli (piridinium fenileno) exhiben una alta conductividad (160 S/cm) y solubilidad en agua. Su estructura plana y sus capacidades de transferencia de electrones sugieren aplicaciones potenciales en dispositivos fotovoltaicos.
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.
- Electrónica orgánica y electrónica orgánica.
Sus antecedentes:
- Los polímeros conjugados son cruciales para la electrónica orgánica.
- El desarrollo de nuevos polímeros conjugados de tipo n con alta conductividad y procesable sigue siendo un desafío.
Objetivo del estudio:
- Para sintetizar y caracterizar nuevos polímeros conjugados de poli (piridinio fenileno).
- Investigar sus propiedades electroquímicas, conductividad y potencial para aplicaciones fotovoltaicas.
Principales métodos:
- Síntesis a través de acoplamiento cruzado y ciclización.
- Medición de la conductividad in situ tras la reducción (n-doping).
- Comparación de las afinidades de electrones con los materiales estándar de tipo n como PCBM.
Principales resultados:
- Se logran altas conductividades in situ de hasta 160 S/cm.
- Solubilidad en agua demostrada y alta electroactividad.
- Transferencia de electrones en estado excitado exhibida con polímeros conjugados donantes.
Conclusiones:
- La estructura plana reforzada por unidades cíclicas contribuye a la alta conductividad.
- Estos nuevos polímeros se muestran prometedores como materiales de tipo n para dispositivos fotovoltaicos orgánicos.
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