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Marco orgánico covalente poroso funcionalizado de triazina para la isomerización E-Z fotoorganocatalítica de las
Mohitosh Bhadra1,2, Sharath Kandambeth2, Manoj K Sahoo1,2
1Academy of Scientific and Innovative Research (AcSIR) , CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune - 411008 , India.
Journal of the American Chemical Society
|April 5, 2019
Resumen
Las estructuras orgánicas covalentes no metálicas ofrecen una alternativa sostenible a los catalizadores de metales preciosos para la fotocatálisis con luz visible. Un nuevo marco de triazina-ceto (TpTt) convierte eficientemente el transestilbeno en cisestilbeno utilizando luz azul.
Área de la Ciencia:
- Química orgánica
- Ciencias de los materiales
- Fotocatálisis
Sus antecedentes:
- La fotocatálisis por luz visible es una alternativa sostenible a las reacciones orgánicas térmicas.
- Los fotocatalizadores homogéneos basados en metales preciosos o tintes orgánicos son tóxicos y no reutilizables, lo que limita las aplicaciones industriales.
- El desarrollo de fotocatalizadores heterogéneos eficientes, reutilizables y no tóxicos es crucial.
Objetivo del estudio:
- Sintetizar un nuevo marco orgánico covalente basado en no metales (TpTt) para la fotocatálisis heterogénea.
- Investigar la actividad fotocatalítica de TpTt bajo irradiación de luz visible.
- Demostrar la aplicación de TpTt en la conversión ascendente del transestilbeno en el cisestilbeno.
Principales métodos:
- Síntesis de un marco orgánico covalente basado en triazina y ceto funcionalizado (TpTt).
- Caracterización de TpTt por sus propiedades ópticas y estructurales.
- Configuración de la reacción fotocatalítica mediante el uso de diodos emisores de luz azul.
- Análisis de la conversión del transestilbeno en cisestilbeno.
Principales resultados:
- El TpTt sintetizado exhibió una absorción significativa en el espectro de luz visible.
- TpTt demostró una alta eficiencia en la conversión fotocatalítica del transestilbeno en el cisestilbeno.
- La reacción se produjo a través de un mecanismo de transferencia de energía con un amplio alcance de sustrato.
Conclusiones:
- El marco orgánico covalente no metálico (TpTt) es un fotocatalizador heterogéneo eficaz para las transformaciones orgánicas impulsadas por la luz visible.
- TpTt ofrece una alternativa sostenible y reutilizable a los fotocatalizadores homogéneos tradicionales.
- Este estudio pone de relieve el potencial de TpTt para aplicaciones a gran escala en la química verde.
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