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Highly thermostable mixed lanthanide organic frameworks with high quantum yield for warm white light-emitting diodes

A mixed lanthanide organic framework was prepared via hydrothermal methods using m-phthalic acid (m-H(2)BDC), 1,10-phenanthroline (1,10-Phen), and Ln(3+) ions, formulated as [HNMe(2)][Eu(0.095)Tb(1.905)(m-BDC)(3)(phen)(2)] (ZTU-6). The structure and stability of ZTU-6 were characterised by X-ray dif...

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Detalles Bibliográficos
Autores principales: Shen, Yanqiong, Pan, Xianyong, Zhao, Yaru, Gu, Qingchuan, Li, Qipeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10239934/
https://www.ncbi.nlm.nih.gov/pubmed/37284579
http://dx.doi.org/10.3389/fchem.2023.1204646
Descripción
Sumario:A mixed lanthanide organic framework was prepared via hydrothermal methods using m-phthalic acid (m-H(2)BDC), 1,10-phenanthroline (1,10-Phen), and Ln(3+) ions, formulated as [HNMe(2)][Eu(0.095)Tb(1.905)(m-BDC)(3)(phen)(2)] (ZTU-6). The structure and stability of ZTU-6 were characterised by X-ray diffraction (XRD) and thermogravimetric analysis (TGA), which revealed a three-dimensional pcu topology with high thermal stability. Fluorescence tests showed that ZTU-6 emitted orange light with a high quantum yield of 79.15%, and it can be effectively encapsulated in a light-emitting diode (LED) device emitting orange light. In addition, ZTU-6 was found to be compatible with BaMgAl(10)O(17):Eu(2+) (BAM) blue powder and [(Sr,Ba)(2)SiO(4):Eu(2+)] silicate yellow and green powder to create a warm white LED with a high colour rendering index (CRI) of 93.4, a correlated colour temperature (CCT) of 3908 K, and CIE coordinates of (0.38, 036).