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

Author(s) Brunet, G.; Marin, R.; Monk, M.J.; Resch-Genger, U.; Gálico, D.A.; Sigoli, F.A.; Suturina, E.A.; Hemmer, E.; Murugesu, M.
Journal Chem Sci
Date Published 2019 Jul 28
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 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 calculations, reveal one of the highest energy barriers reported for an Yb-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.

DOI 10.1039/c9sc00343f
ISSN 2041-6520
Citation Brunet G, Marin R, Monk M-, Resch-Genger U, Gálico DA, Sigoli FA, et al. Exploring the dual functionality of an ytterbium complex for luminescence thermometry and slow magnetic relaxation. Chem Sci. 2019;10(28):6799-6808.

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