Exploring the dual functionality of an ytterbium complex for luminescence thermometry and slow magnetic relaxation

Gabriel Brunet, Riccardo Marin, Melissa-Jane Monk, Ute Resch-Genger, Diogo A. Gálico, Fernando A. Sigoli, Elizaveta A. Suturina, Eva Hemmer, Muralee Murugesu

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Abstract

We present a comprehensive investigation of the magnetic and optical properties of an ytterbium complex, which combines two desirable and practical features into a single molecular system. Based upon Yb III ions that promote near-infrared optical activity and a chemical backbone that is ideal for an in-depth understanding of the magnetic behaviour, we have designed a multifunctional opto-magnetic species that operates as a luminescent thermometer and as a single-molecule magnet (SMM). Our magnetic investigations, in conjunction with ab initio calculations, reveal one of the highest energy barriers reported for an Yb III-based complex. Moreover, we correlate this anisotropic barrier with the emission spectrum of the compound, wherein we provide a complete assignment of the energetic profile of the complex. Such studies lay the foundation for the design of exciting multi-faceted materials that are able to retain information at the single-molecule level and possess built-in thermal self-monitoring capabilities.

Original languageEnglish
JournalChemical Science
Volume10
Issue number28
DOIs
Publication statusPublished - 28 Jul 2019

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Brunet, G., Marin, R., Monk, M-J., Resch-Genger, U., Gálico, D. A., Sigoli, F. A., ... Murugesu, M. (2019). Exploring the dual functionality of an ytterbium complex for luminescence thermometry and slow magnetic relaxation. Chemical Science, 10(28). https://doi.org/10.1039/C9SC00343F