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Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
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El electrocromismo en los dietienilciclopentenos fotocrómicos
1Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6.
Journal of the American Chemical Society
|March 20, 2003
Resumen
Se desarrollaron nuevos compuestos fotocrómicos y electrocrómicos. Estos derivados de 1,2-bis(3-tienil) ciclopenteno cambian entre estados incoloros y coloridos utilizando la luz o la oxidación electroquímica.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Química orgánica es la química orgánica.
- La fotoquímica es la fotoquímica.
Sus antecedentes:
- Los materiales fotocrómicos cambian de color al exponerse a la luz.
- Los materiales electrocrómicos cambian de color al ser estimulados eléctricamente.
- Los derivados del ciclopenteno ofrecen propiedades electrónicas sintonizables.
Objetivo del estudio:
- Para sintetizar y caracterizar los nuevos derivados de 1,2-bis(3-tienila) ciclopenteno.
- Para investigar el comportamiento fotocrómico y electrocrómico de estos compuestos.
- Explorar sus aplicaciones potenciales en materiales receptivos.
Principales métodos:
- Síntesis de tiofeno y fenilo sustituido por 1,2-bis(3-tienila) ciclopenteno.
- Espectroscopia UV-Vis para monitorear las transiciones fotocrómicas.
- Métodos electroquímicos para estudiar las propiedades electrocrómicas.
Principales resultados:
- Los compuestos exhiben fotocromismo reversible, cambiando entre estados incoloros (anillo abierto) y coloridos (anillo cerrado) con luz UV / visible.
- Un electrocromismo sin precedentes observado en estos derivados.
- La oxidación catalítica permite la transformación de estados de anillo cerrado a estados de anillo abierto.
Conclusiones:
- Los derivados de 1,2-bis(3-tienil) ciclopenteno estudiados poseen propiedades tanto fotocrómicas como electrocrómicas.
- Estos materiales ofrecen cambios de color sintonizables a través de estímulos de luz o electroquímicos.
- Potencial para aplicaciones en ventanas inteligentes, pantallas y almacenamiento óptico de datos.
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Removing one hydrogen from the intervening CH2 group with both...
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