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Cuadros orgánicos covalentes tridimensionales basados en tetratiofulvaleno para conductividad eléctrica sintonizable
Hui Li1, Jianhong Chang1, Shanshan Li1
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University , Changchun 130012 , People's Republic of China.
Journal of the American Chemical Society
|August 11, 2019
Resumen
Los investigadores desarrollaron nuevos marcos orgánicos covalentes basados en tetratiofulvaleno 3D (3D-TTF-COF). Estos materiales electroactivos exhiben una conductividad ajustable, allanando el camino para aplicaciones avanzadas de electrónica molecular y almacenamiento de energía.
Área de la Ciencia:
- Ciencias de los materiales
- Química orgánica
- Nanotecnología
Sus antecedentes:
- La funcionalidad de los marcos orgánicos covalentes 3D (COF) es crucial para expandir sus aplicaciones.
- La incorporación de grupos orgánicos electroactivos en los FOC 3D sigue siendo un desafío importante.
Objetivo del estudio:
- Informar sobre la primera síntesis de COFs basados en tetratiofulvaleno en 3D (3D-TTF-COFs).
- Para investigar su actividad electroquímica y conductividad eléctrica.
Principales métodos:
- Síntesis de 3D-TTF-COFs con topología de pts no o 2 veces interpenetrada.
- Caracterización de la cristalinidad, la porosidad y la superficie.
- Evaluación de la actividad redox y de la conductividad eléctrica mediante dopaje con yodo.
Principales resultados:
- Se obtienen 3D-TTF-COF de alta cristalinidad con porosidad permanente y una gran superficie (hasta 3000 m2/g).
- Actividad electroquímica sintonizable y comportamiento redox.
- Se obtiene una conductividad eléctrica ajustable de hasta 1,4 × 10−2 S cm−1 a 120 °C mediante dopaje con yodo.
Conclusiones:
- Se han diseñado y sintetizado con éxito nuevos materiales electroactivos en 3D.
- Estos 3D-TTF-COF son prometedores para aplicaciones en electrónica molecular y almacenamiento de energía.
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