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Las pilas alternativas de donante-aceptante de éteres de corona y derivados de diimida de naftaleno: formación rápida
Gayane Koshkakaryan1, Liana M Klivansky, Dennis Cao
1The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Journal of the American Chemical Society
|January 24, 2009
Resumen
Los investigadores crearon pilas organizadas de donante-aceptor alternativo (ADA) utilizando anfitriones de éter de corona y huéspedes de diímido de naftaleno. Estas estructuras se forman fácilmente en solución o a través de una simple molienda mecánica, avanzando la química huésped-huésped al estado sólido.
Área de la Ciencia:
- Química supramolecular de las moléculas.
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- La complejación huésped-huésped es crucial para el reconocimiento molecular y el autoensamblaje.
- Desarrollar estructuras ordenadas de estado sólido a partir de sistemas basados en soluciones sigue siendo un desafío.
Objetivo del estudio:
- Para investigar la complejación 1:2 atípica entre éteres de corona ricos en electrones y huéspedes de diimida de naftaleno con deficiencia de electrones.
- Establecer métodos convenientes para la formación de pilas ordenadas de donante-aceptante alternativo (ADA) tanto en la solución como en los estados sólidos.
Principales métodos:
- Síntesis de pilas alternativas de donante-aceptante (ADA) a través de la complejación anfitrión-invitado 1:2.
- Caracterización de agregados policristalinos y estructuras de estado sólido utilizando espectroscopia de RMN de estado sólido, difracción de rayos X de cristal único y difracción de rayos X de polvo.
Principales resultados:
- La complejación atípica 1:2 formó con éxito pilas de ADA con altos rendimientos.
- Las pilas ordenadas de ADA se obtuvieron de la solución como agregados policristalinos.
- La organización del estado sólido se logró a través de un simple proceso de molienda mecánica de sólido a sólido.
Conclusiones:
- Este trabajo demuestra métodos fáciles para sintetizar nuevas pilas de donante-aceptante que involucran huéspedes macrocíclicos.
- Los hallazgos representan un avance significativo en la traducción de los sistemas electroactivos anfitrión-invitado de la solución al estado sólido.
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