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Columnas donantes-aceptantes segregadas en cristales líquidos que exhiben un transporte de carga ambipolar altamente
Hironobu Hayashi1, Wataru Nihashi, Tomokazu Umeyama
1Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
Journal of the American Chemical Society
|June 25, 2011
Resumen
Los investigadores crearon un material cristalino líquido mediante la vinculación de donantes de ftaalocianina a los aceptadores de fullereno. Este nuevo material muestra un excelente transporte de carga ambipolar, allanando el camino para la electrónica orgánica avanzada.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Electrónica orgánica y electrónica orgánica.
- Química supramolecular de las moléculas.
Sus antecedentes:
- La electrónica orgánica requiere materiales de transporte de carga eficientes.
- Las fases cristalinas líquidas ofrecen estructuras ordenadas beneficiosas para la movilidad de la carga.
- Las ftaalocianinas y los fullerenos son moléculas donantes y aceptadoras bien conocidas, respectivamente.
Objetivo del estudio:
- Desarrollar un material cristalino líquido con propiedades eficientes de transporte de carga.
- Para vincular covalentemente las unidades de ftaalocianina (donante) y fullereno (aceptante).
- Para investigar las características de transporte de carga en la fase cristalina líquida.
Principales métodos:
- Síntesis covalente de moléculas de donante y receptor.
- Formación de una fase cristalina líquida.
- Medición de las propiedades de carga-transporte (ambipolar).
Principales resultados:
- Síntesis exitosa de conjugados de ftaalocianina y fullereno cristalino líquido.
- Observación de una fase cristalina líquida con forma de columna.
- Demostración de un transporte de carga ambipolar altamente eficiente dentro de la estructura columnar.
Conclusiones:
- El enlace covalente de donantes y aceptores cristalinos líquidos es una estrategia viable para la electrónica orgánica.
- La fase cristalina líquida columnar facilita el transporte de carga ambipolar eficiente.
- Este enfoque tiene un potencial significativo para el desarrollo de dispositivos electrónicos orgánicos de próxima generación.
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