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Materiales basados en iones derivados de complejos de cloruro cargados positivamente y negativamente de moléculas
Bin Dong1, Tsuneaki Sakurai, Yuya Bando
1College of Pharmaceutical Sciences, Ritsumeikan University , Kusatsu 525-8577, Japan.
Journal of the American Chemical Society
|September 24, 2013
Resumen
Los investigadores crearon sales orientadas a partir de complejos cargados, formando geles supramoleculares y mesofasas columnares. Estos materiales exhiben propiedades de transporte de carga unidimensional, cruciales para las aplicaciones electrónicas avanzadas.
Área de la Ciencia:
- Química supramolecular de las moléculas.
- Ciencia de los materiales Ciencia de los materiales.
- Electrónica orgánica y electrónica orgánica.
Sus antecedentes:
- Diseñar materiales ordenados a partir de especies cargadas es un desafío.
- El reconocimiento de aniones es clave para la construcción de complejas arquitecturas supramoleculares.
- Los sistemas π-conjugados ofrecen propiedades electrónicas sintonizables.
Objetivo del estudio:
- Para sintetizar sales orientadas de especies con carga plana.
- Para investigar el comportamiento de autoensamblaje de estas sales en diferentes estados.
- Para caracterizar las propiedades de transporte de carga de los materiales resultantes.
Principales métodos:
- Síntesis de los receptores conjugados π dicationic y neutro.
- Formación de complejos receptores-Cl ((-) cargados positivamente y negativamente.
- Caracterización de los geles supramoleculares y las mesofasas de estado sólido.
- Medidas de conductividad de microondas con resolución de tiempo de fotólisis de flash.
Principales resultados:
- Se han preparado con éxito sales orientadas a partir de complejos receptor-anión de carga plana.
- Se observaron estructuras autoorganizadas lamelares en xerogeles y mesofasas columnares hexagonales en pares de iones en estado sólido.
- Se ha determinado una movilidad unidimensional portadora de carga de 0,05 cm(2) V(-1) s(-1) para los pares de iones en estado sólido.
Conclusiones:
- La combinación de complejos cargados y receptores π-conjugados permite la formación de estructuras supramoleculares ordenadas.
- Los materiales resultantes exhiben propiedades prometedoras de transporte de carga para aplicaciones electrónicas.
- Este trabajo proporciona una nueva ruta para el diseño de materiales supramoleculares funcionales.
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