A Luminescent Thermometer Exhibiting Slow Relaxation of the Magnetization : Toward Self-Monitored Building Blocks for Next-Generation Optomagnetic Devices
Errulat, D., Marin, R., Gálico, D. A., Harriman, K. L. M., Pialat, A., Gabidullin, B., Iikawa, F., Couto, O. D.D., Moilanen, J., Hemmer, E., Sigoli, F. A., & Murugesu, M. (2019). A Luminescent Thermometer Exhibiting Slow Relaxation of the Magnetization : Toward Self-Monitored Building Blocks for Next-Generation Optomagnetic Devices. ACS Central Science, 5(7), 1187-1198. https://doi.org/10.1021/acscentsci.9b00288
Published inACS Central Science
DisciplineEpäorgaaninen ja analyyttinen kemiaNanoscience CenterInorganic and Analytical ChemistryNanoscience Center
© 2019 American Chemical Society
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, [Dy2(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. ...
PublisherAmerican Chemical Society
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Research costs of Academy Research Fellow, AoF; Postdoctoral Researcher, AoF; Academy Research Fellow, AoF
Additional information about fundingM.M., E.H., D.E., R.M., K.L.M.H., A.P., and B.G. gratefully acknowledge the financial support provided by the University of Ottawa, the Canadian Foundation for Innovation (CFI), and the Natural Sciences and Engineering Research Council of Canada (NSERC). J.O.M. gratefully acknowledges the Academy of Finland (Projects 315829, 320015, and 285855). F.A.S., D.A.G., F.I., and O.D.D.C.J. gratefully acknowledge the Sao Paulo Research Foundation FAPESP (Projects 2013/ ̃22127-2, INOMAT: 2014/50906-9, 2012/11382-9, and 2016/16365-6), the Brazilian National Research Council CNPq (Project 305769/2015-4), and CAPES. ...
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