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Polímero de coordinación basado en dianión TCNQ cuyo marco abierto muestra inclusión de tipo de transferencia de
Satoru Shimomura1, Ryotaro Matsuda, Takashi Tsujino
1Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
Journal of the American Chemical Society
|December 21, 2006
Resumen
Se sintetizó un nuevo marco de coordinación 3D utilizando 7,7,8,8-tetraciano-p-quinodimetano (TCNQ). Este material rico en electrones actúa como un sensor óptico para los aromáticos a través de las interacciones de transferencia de carga.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- La cristalografía es una técnica de cristalografía.
- Química supramolecular de las moléculas.
Sus antecedentes:
- Los marcos de coordinación ofrecen estructuras porosas sintonizables para el reconocimiento molecular.
- El 7,7,8,8-tetraciano-p-quinodimetano (TCNQ) es un versátil bloque de construcción orgánico con fuertes propiedades de aceptación de electrones.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo marco de coordinación 3D basado en TCNQ.
- Investigar el potencial del marco para la detección óptica de compuestos aromáticos.
Principales métodos:
- Síntesis del marco tridimensional de coordinación.
- Difracción de rayos X monocristalino para la caracterización estructural.
- Espectroscopia óptica para estudiar las interacciones de transferencia de carga.
Principales resultados:
- Síntesis exitosa y aclaración estructural de un marco de coordinación 3D basado en TCNQ.
- El marco exhibe una superficie rica en electrones y una cavidad de detección óptica.
- Se observó una transformación de cristal a cristal y una fuerte acomodación de huéspedes aromáticos.
- Se confirmó que el mecanismo de detección se basa en interacciones de transferencia de carga.
Conclusiones:
- El marco de coordinación basado en TCNQ demuestra el potencial como un sensor óptico para aromáticos.
- La transformación observada de cristal a cristal pone de relieve la naturaleza dinámica del marco.
- Las interacciones de transferencia de carga son clave para las capacidades de detección de este material.
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