Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/36056
Title: | Luminescence thermometry and field induced slow magnetic relaxation based on a near infrared emissive heterometallic complex |
Author: | Karachousos-Spiliotakopoulos, K. Tangoulis, V. Panagiotou, N. Tasiopoulos, A. Moreno-Pineda, E. Wernsdorfer, W. Schulze, M. Botas, Alexandre M.P. Carlos, Luís D. |
Issue Date: | 10-May-2022 |
Publisher: | Royal Society of Chemistry |
Abstract: | The 1 : 1 : 1 reaction of YbCl3·6H2O, K3[Co(CN)6] and bpyO2 in H2O has provided access to a complex with formula [YbCo(CN)6(bpyO2)2(H2O)3]·4H2O (1) in a very good yield while its structure has been determined by single-crystal X-ray crystallography and characterised based on elemental analyses and IR spectra. Magnetic susceptibility studies showed the complex to be a field induced single molecule magnet, as confirmed by μ-SQUID measurements. CASSCF calculations confirm the existence of a mJ = 7/2 ground state, with rather large transverse components, responsible for the fast relaxation characteristic of compound 1 at zero DC field, which is reduced upon application of DC fields. Moreover, a combination of luminescence studies along with CASSCF calculation allows the identification of the band structure of the complex, which is ultimately related to its electronic properties. Compound 1 operates as a luminescent thermometer in the 125-300 K range with a maximum relative thermal sensitivity of ≈0.1% K−1 at 180 K. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/36056 |
DOI: | 10.1039/d2dt00936f |
ISSN: | 1477-9226 |
Appears in Collections: | CICECO - Artigos DFis - Artigos |
Files in This Item:
File | Description | Size | Format | |
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DaltonTrans.-Karachousos-Spiliotakopoulos-LuminescenceThermometry.pdf | 1.87 MB | Adobe PDF |
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