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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Módulos aniónicos: bloques de construcción de conjuntos supramoleculares por combinación con receptores de aniones
Hiromitsu Maeda1, Kazumasa Naritani, Yoshihito Honsho
1College of Pharmaceutical Sciences, Institute of Science and Engineering, Ritsumeikan University, Kusatsu 525-8577, Japan. maedahir@ph.ritsumei.ac.jp
Journal of the American Chemical Society
|May 20, 2011
Resumen
Los nuevos receptores acíclicos conjugados con π y los módulos de aniones de carboxilato gálico forman conjuntos supramoleculares. Estos materiales blandos exhiben estructuras ordenadas y conductividad eléctrica, modulada por la longitud de la cadena de alquilo.
Área de la Ciencia:
- Química supramolecular de las moléculas.
- Ciencia de los materiales ciencia de los materiales.
- Química orgánica es la química orgánica.
Sus antecedentes:
- Los complejos de boro de dipirrolildicetonas sirven como receptores de aniones acíclicos π-conjugados.
- Estos receptores funcionan como subunidades de construcción para ensamblajes supramoleculares a través de interacciones no covalentes.
- Los módulos aniónicos se pueden incorporar como bloques de construcción para crear diversos materiales blandos.
Objetivo del estudio:
- Para investigar la formación de ensamblajes supramoleculares utilizando complejos de boro de dipirolildiketona y derivados de carboxilato gálico.
- Explorar las capacidades de autoensamblaje de los módulos aniónicos y su influencia en las propiedades de los materiales.
- Para fabricar materiales funcionales con conductividad eléctrica.
Principales métodos:
- Síntesis de derivados del carboxilato gálico (3-n) como sales de tetrabutylamonio (TBA).
- Formación de complejos receptor-anión-módulo (1a/1b·3-n·TBA).
- Caracterización mediante calorimetría de barrido diferencial, microscopía óptica polarizada y difracción de rayos X.
Principales resultados:
- Los complejos receptor-anión-módulo formaron mesofasas, indicadas por análisis ópticos y térmicos.
- La difracción de rayos X reveló estructuras lamelares altamente ordenadas en estados sólidos y mesofasas.
- La longitud de la cadena de alquilo de los módulos aniónicos moduló las estructuras observadas.
- Se fabricaron materiales funcionales con conductividad eléctrica.
Conclusiones:
- Los complejos de boro de dipirrolildicetonas y módulos de aniones específicos pueden autoensamblarse en materiales blandos ordenados.
- La longitud de las cadenas de alquilo en los módulos aniónicos proporciona un medio para ajustar la arquitectura supramolecular.
- Este enfoque permite la fabricación de materiales funcionales conductores a partir de bloques de construcción que se ensamblan a sí mismos.
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