期刊
ACS CENTRAL SCIENCE
卷 5, 期 7, 页码 1187-1198出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscentsci.9b00288
关键词
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资金
- University of Ottawa
- Canadian Foundation for Innovation (CFI)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Academy of Finland [315829, 320015, 285855]
- Sao Paulo Research Foundation FAPESP [2013/22127-2, INOMAT: 2014/50906-9, 2012/11382-9, 2016/16365-6]
- Brazilian National Research Council CNPq [305769/2015-4]
- CAPES
- Academy of Finland (AKA) [285855, 320015, 315829, 285855] Funding Source: Academy of Finland (AKA)
The development and integration of Single-Molecule Magnets (SMMs) into molecular electronic devices continue to be an exciting challenge. In such potential devices, heat generation due to the electric current is a critical issue that has to be considered upon device fabrication. To read out accurately the temperature at the submicrometer spatial range, new multifunctional SMMs need to be developed. Herein, we present the first self-calibrated molecular thermometer with SMM properties, which provides an elegant avenue to address these issues. The employment of 2,2'-bipyrimidine and 1,1,1-trifluoroacetylacetonate ligands results in a dinuclear compound, [Dy-2(bpm)(tfaa)(6)], which exhibits slow relaxation of the magnetization along with remarkable photoluminescent properties. This combination allows the gaining of fundamental insight in the electronic properties of the compound and investigation of optomagnetic cross-effects (Zeeman effect). Importantly, spectral variations stemming from two distinct thermal-dependent mechanisms taking place at the molecular level are used to perform luminescence thermometry over the 5-398 K temperature range. Overall, these properties make the proposed system a unique molecular luminescent thermometer bearing SMM properties, which preserves its temperature self-monitoring capability even under applied magnetic fields.
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