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Estructura del cristal de 2-(2',4'-dinitrobenzil) piridina fotocolorido: transferencia de protones inducida por dos
Pance Naumov1, Akiko Sekine, Hidehiro Uekusa
1Department of Chemistry and Materials Science, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
Journal of the American Chemical Society
|July 18, 2002
Resumen
El fototautómero azul de 2-(2 es
Área de la Ciencia:
- La fotoquímica es la fotoquímica.
- La cristalografía es una técnica de cristalografía.
- Mecanismos moleculares de las moléculas.
Sus antecedentes:
- 2-(2',4'-dinitrobenzil) piridina (DNBP) muestra fotocromismo.
- Comprender el mecanismo de fotocoloración en DNBP es crucial para sus aplicaciones.
Objetivo del estudio:
- Para determinar la estructura de rayos X del fototautómero azul de DNBP.
- Para dilucidar el mecanismo de fotocoloración en el DNBP sólido.
Principales métodos:
- Difracción de rayos X de un solo cristal.
- Espectroscopia de excitación de dos fotones.
Principales resultados:
- Se determinó la estructura de rayos X del fototautómero azul de DNBP.
- Esto proporciona la primera evidencia estructural directa de un producto fotocolorido en la familia DNBP.
- Se identificó un mecanismo de transferencia de protones asistido por nitro como el responsable de la fotocoloración.
Conclusiones:
- El estudio proporciona evidencia estructural directa para el producto fotocolorido de DNBP.
- Un mecanismo de transferencia de protones asistido por nitro explica la fotocoloración del DNBP sólido.
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