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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Síntesis y mejora de la absorción de dos fotones de los macrociclos de porfirina
Jeffery E Raymond1, Ajit Bhaskar, Theodore Goodson
1Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
Journal of the American Chemical Society
|December 5, 2008
Resumen
Los investigadores mejoraron los materiales orgánicos para aplicaciones de absorción de dos fotones (TPA) mediante la síntesis de macrociclos de dímeros de porfirina. Este nuevo enfoque resultó en un aumento de 100 veces en la sección transversal óptica no lineal del material.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Química orgánica es la química orgánica.
- La óptica no lineal es la óptica no lineal.
Sus antecedentes:
- Las arquitecturas macromoleculares de cromóforos conjugados pueden mejorar las propiedades ópticas no lineales.
- Tales materiales son cruciales para las aplicaciones de absorción de dos fotones (TPA).
Objetivo del estudio:
- Desarrollar un método sencillo para sintetizar macrociclos de dimeros de porfirina.
- Investigar las propiedades ópticas no lineales de estos nuevos macrociclos.
Principales métodos:
- Síntesis de los macrociclos del dímero de la porfirina.
- Se empleó la espectroscopia de absorción de dos fotones (TPA) para caracterizar los materiales.
Principales resultados:
- Se estableció una ruta de síntesis sencilla para los macrociclos del dímero de porfirina.
- Los macrociclos sintetizados exhibieron una mejora de dos órdenes de magnitud en su sección transversal de absorción de dos fotones.
- Se logró una sección transversal óptica no lineal máxima (delta) de 10^6 GM.
Conclusiones:
- La transición a arquitecturas macromoleculares es una estrategia efectiva para mejorar las propiedades ópticas no lineales.
- Los macrociclos de dimeros de porfirina representan una clase prometedora de materiales para aplicaciones avanzadas de TPA.
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