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

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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 YbIII 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 YbIII-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.

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

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Publication details

The article was received on 21 Jan 2019, accepted on 27 May 2019 and first published on 28 May 2019


Article type: Edge Article
DOI: 10.1039/C9SC00343F
Chem. Sci., 2019, Advance Article
  • Open access: Creative Commons BY-NC license
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    Exploring the dual functionality of an ytterbium complex for luminescence thermometry and slow magnetic relaxation

    G. Brunet, R. Marin, M. Monk, U. Resch-Genger, D. A. Gálico, F. A. Sigoli, E. A. Suturina, E. Hemmer and M. Murugesu, Chem. Sci., 2019, Advance Article , DOI: 10.1039/C9SC00343F

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