Self-Assembly Syntheses, Structural Characterization, and Luminescent Properties of Lanthanide Coordination Polymers Constructed by Three Triazole-Carboxylate Ligands

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• 作者：Yan Yang ; Feilong Jiang ; Caiping Liu ; Lian Chen ; Yanli Gai ; Jiandong Pang ; Kongzhao Su ; Xiuyan Wan ; Maochun Hong
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：16
• 期：4
• 页码：2266-2276
• 全文大小：853K
• ISSN：1528-7505

文摘

Herein, 15 lanthanide coordination complexes based on three di-, tri-, and tetra-carboxylic ligands with imidazolyl groups have been solvothermally designed, synthesized, and characterized. All the complexes exhibit high thermal stabilities and can remain stable in the open air more than 7 days. Luminescent spectra of Eu³⁺ and Tb³⁺ complexes at room temperature indicate that the three carboxylic ligands H₂L¹, H₃L², and H₄L³ are promising potential light sensitizers for lanthanide ions based on their suitable triplet energy levels. Luminescent lifetimes and quantum yields of these compounds were further measured and compared. The correlations between their structural features and photophysical properties are discussed in detail.