化学
镧系元素
三联苯
发光
激发态
温度计
金属有机骨架
配体(生物化学)
离子
能量转移
氟
大气温度范围
物理化学
无机化学
光化学
原子物理学
化学物理
光电子学
有机化学
热力学
受体
吸附
物理
生物化学
作者
Dian Zhao,Dan Yue,Ling Zhang,Ke Jiang,Guodong Qian
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2018-09-26
卷期号:57 (20): 12596-12602
被引量:92
标识
DOI:10.1021/acs.inorgchem.8b01746
摘要
A fluorine-modified tetracarboxylic acid ligand, namely, 2′-fluoro-[1,1′:4′,1′′-terphenyl]-3,3′′,5,5′′-tetracarboxylic acid (H4FTPTC), with suitable triplet energy excited state, was designed and applied to construct the luminescent lanthanide metal–organic frameworks (LnMOFs) for cryogenic temperature sensing. With the lanthanides codoping strategy, we developed a new Tb3+/Eu3+ mixed LnMOF system Tb1–xEuxFTPTC (x = 0.05, 0.1, 0.2), which feature excellent linear responses to temperature with high relative sensitivity in the cryogenic range of 25–125 K. It was found that the relative sensitivity of such mixed LnMOF could readily be tuned by adjusting the incorporation amount of Eu3+ ions in the host framework. In addition, the energy transfer efficiency between the Tb3+ and Eu3+ ions in the framework with different Tb3+/Eu3+ ratios are also investigated and discussed.
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