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Conductor molecular poroso: Fabricación electroquímica de vías de conducción a través del espacio entre polímeros de
Liyuan Qu1, Hiroaki Iguchi1, Shinya Takaishi1
1Department of Chemistry, Graduate School of Science , Tohoku University , 6-3 Aza-Aoba, Aramaki , Sendai 980-8578 , Japan.
Journal of the American Chemical Society
|April 19, 2019
Resumen
Los investigadores desarrollaron el primer conductor molecular poroso (PMC) utilizando electrocristalización. Este nuevo material exhibe una conductividad eléctrica mejorada al eliminar el disolvente, lo que es prometedor para aplicaciones electrónicas sensibles.
Área de la Ciencia:
- Ciencias de los materiales
- Química
- Física del estado sólido
Sus antecedentes:
- Los conductores moleculares porosos (PMC) son una clase de materiales con aplicaciones potenciales en electrónica.
- El desarrollo de nuevos PMC con propiedades sintonizables es crucial para el avance de la electrónica molecular.
Objetivo del estudio:
- Para sintetizar y caracterizar el primer conductor molecular poroso.
- Investigar la conductividad eléctrica y la capacidad de respuesta del nuevo PMC.
Principales métodos:
- Electrocristalización de Cd2+ y N, N'-di(4-piridil) -1,4,5,8-naftalenetetracarboxidimida (NDI-py) en el mismo proceso.
- Montaje mediante apilamiento π-π de polímeros de coordinación lineal unidimensional (1D).
- Reducción parcial de los núcleos NDI a aniones radicales.
Principales resultados:
- Se ha logrado la síntesis de un nuevo PMC, [Cd(NDI-py) ((OH2)4) ((NO3) 1.3±0.1·nDMA (PMC-1).
- Se obtiene una conductividad eléctrica a temperatura ambiente de (1,0-3,3) × 10-3 S cm-1.
- Se ha demostrado una mejora significativa de la conductividad eléctrica tras la eliminación de la molécula del disolvente.
Conclusiones:
- PMC-1 es el primer material que exhibe porosidad, conducción a través del espacio y ricos portadores de carga.
- La conductividad eléctrica de los PMC puede ajustarse mediante la eliminación del disolvente, lo que indica la capacidad de respuesta de las moléculas.
- Los PMC son candidatos prometedores para la próxima generación de materiales conductores sensibles a las moléculas.
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