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Tetrametálico Terbio/Europio Fluorenilfosfonato con Excelente Centelleo de Rayos X y Luminiscencia Inducida por

Qiankun Zhou¹, Yubo An¹, Xinyu Zhang¹

¹School of Materials Engineering, Jiangsu Key Laboratory of Advanced Functional Materials, Suzhou University of Technology, Changshu, Jiangsu, People's Republic of China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|January 27, 2026

Resumen

Nuevos cúmulos de lantánidos muestran excelentes propiedades de centelleo de rayos X. Estos materiales también ofrecen luminiscencia sintonizable y emisión de luz cercana a la blanca, allanando el camino para aplicaciones ópticas avanzadas.

Área de la Ciencia:

Ciencia de Materiales
Química Inorgánica
Luminiscencia

Sus antecedentes:

Los cúmulos de lantánidos son de interés por sus propiedades ópticas y magnéticas únicas.
El desarrollo de nuevos materiales centelleadores es crucial para diversas tecnologías de detección.
Los ligandos fosfonato ofrecen entornos de coordinación versátiles para iones lantánidos.

Objetivo del estudio:

Sintetizar y caracterizar nuevos cúmulos de lantánidos tetranucleares con ligandos fosfonato.
Investigar el rendimiento de centelleo de rayos X de los cúmulos de europio (Eu) y terbio (Tb).
Explorar las propiedades de fotoluminiscencia y el potencial de ajuste de color en sistemas mixtos de Eu/Tb.

Principales métodos:

Síntesis de cúmulos de fosfonato de lantánidos.
Cristalografía de rayos X para la determinación estructural.
Espectroscopía de centelleo de rayos X y fotoluminiscencia para el análisis de propiedades ópticas.

Principales resultados:

Se sintetizaron con éxito dos cúmulos de lantánidos tetranucleares, [Ln4(RPO3)2(RPO3H)(tBuCO2)7(tBuCO2H)3(H2O)3] (Ln = Eu, Tb).
Los cúmulos de Eu4 y Tb4 demostraron un rendimiento excepcional de centelleo de rayos X debido a la luminiscencia característica de Ln3+.
Se logró una fotoluminiscencia sintonizable y emisión de luz cercana a la blanca en análogos mixtos de Eu/Tb variando la longitud de onda de excitación y la relación Eu3+:Tb3+.

Conclusiones:

Los cúmulos de fosfonato de lantánidos sintetizados exhiben capacidades prometedoras de centelleo de rayos X.
Estos materiales pueden funcionar como materiales luminiscentes de color sintonizable y emisores de luz blanca.
Los hallazgos contribuyen al desarrollo de centelleadores avanzados y materiales luminiscentes basados en cúmulos de lantánidos.

Palabras clave:

centelleo de rayos X fluorenilfosfonato cúmulo de lantánidos luminiscencia

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