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Microlaser de estado sólido supramolecular construido a partir de microcristales complejos anfitrión-invitado basados
Bin Hua1, Wei Zhou1, Zhaoliang Yang1
1State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry , Zhejiang University , Hangzhou 310027 , P. R. China.
Journal of the American Chemical Society
|November 6, 2018
Resumen
Desarrollamos un nuevo material supramolecular utilizando pilar[5]areno (P5) y un tinte láser (DASP). Este complejo huésped-anfitrión mejora la DASP.
Área de la Ciencia:
- Química supramolecular
- Ciencias de los materiales
- Optoelectrónica y sus derivados
Sus antecedentes:
- El apagado causado por agregación (ACQ) y otras vías de desintegración no radiativas limitan la eficiencia luminiscente de muchos tintes orgánicos.
- El desarrollo de complejos anfitrión-invitado puede proporcionar confinamiento espacial para mitigar estos efectos.
- El pilar[5]areno (P5) es un huésped macrocíclico con potencial para encapsular moléculas invitadas.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo complejo huésped-invitado para mejorar la luminiscencia.
- Investigar el efecto del confinamiento espacial en las propiedades fotofísicas de un tinte láser.
- Explorar el potencial del material resultante para aplicaciones láser.
Principales métodos:
- Difracción de rayos X de cristal único para determinar la estructura compleja huésped-invitado.
- Espectroscopia de fotoluminiscencia para evaluar la eficiencia luminiscente.
- Fabricación de microcristales para las mediciones de salida del láser.
Principales resultados:
- Se sintetizó con éxito un complejo anfitrión-invitado 2: 1 de pilar[5]areno (P5) y trans-4-[ p-dimetilamino) estilo]-1-metilpiridinio yoduro (DASP).
- La nanocápsula P5 aisló eficazmente las moléculas de DASP, suprimiendo el apagado causado por la agregación y otros canales de descomposición no radiactivos.
- Los microcristales 2P5DASP resultantes exhibieron una alta eficiencia luminiscente y formaron microcavidades de Fabry-Pérot estables, lo que permitió una salida láser con un alto factor Q y un umbral bajo.
Conclusiones:
- El nuevo complejo anfitrión-invitado P5-DASP aísla efectivamente el tinte, lo que conduce a una luminiscencia significativamente mejorada.
- Los microcristales actúan como microcavidades de Fabry-Pérot eficientes, lo que demuestra el potencial para aplicaciones láser de estado sólido.
- Esta estrategia supramolecular ofrece una ruta prometedora para el desarrollo de materiales luminiscentes de alto rendimiento.
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