铕
铽
镧系元素
金属有机骨架
色散(光学)
灵敏度(控制系统)
化学
光谱学
分析化学(期刊)
基质(化学分析)
物理化学
无机化学
材料科学
核化学
有机化学
色谱法
物理
量子力学
吸附
离子
工程类
电子工程
光学
作者
Madhura Joshi,Maurizio Riesner,Zhuang Wang,Sahba Mireskandari,Raju Nanda,Rebecca Reber,Christoph Huber,Marcus Fischer,Rachel Fainblat,Karl Mandel,Dorothea Wisser,Doris Segets,G. Bacher,Florian M. Wisser,Martin Hartmann
出处
期刊:RSC Advances
[Royal Society of Chemistry]
日期:2025-01-01
卷期号:15 (14): 11230-11242
被引量:8
摘要
The ability to engineer on a molecular level luminescent metal-organic frameworks (MOFs) enables the design of well-performing ratiometric, i.e., self-referencing, temperature sensors. Lanthanide-based MOFs stand out as luminescent temperature sensors due to their high luminescence intensity and the sharp emission lines of the lanthanides. The use of two different lanthanide cations, incorporated into the same MOF structure, is supposed to enable ratiometric temperature sensing. Herein, we present a series of mixed-metal Eu x Tb(1-x)BTC, in which the metal ions are homogeneously dispersed, as demonstrated by 1H solid state NMR spectroscopy. The Eu x Tb(1-x)BTC series shows controllable luminescent properties, which depend on the solvation of the lanthanide. The two MOFs in the series with the lowest Eu contents, namely Eu0.05Tb0.95BTC and Eu0.02Tb0.98BTC, are suitable candidates for ratiometric temperature sensing, achieving sensitivities of up to 2.0% K-1. As the fluorescence is affected by the presence of solvents, simultaneous ratiometric temperature and solvent sensing is possible with remarkable high thermal sensitivities of ca. 0.1% K-1 and ca. 0.2% K-1 for dispersions of Eu0.02Tb0.98BTC in acetonitrile and ethanol, respectively.
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