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Wiley, European Journal of Inorganic Chemistry, 13-14(2016), p. 1967-1971, 2016

DOI: 10.1002/ejic.201501195

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Cryogenic Nanothermometer Based on the MIL-103(Tb,Eu) Metal-Organic Framework

Journal article published in 2016 by Duarte Ananias, Carlos D. S. Brites, Luís D. Carlos, João Rocha ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The microporous metal–organic framework MIL-103 doped with Tb3+ and Eu3+, formulated as [(Tb0.95Eu0.05)(btb)(H2O)]·(solv)x [H3btb = 1,3,5-tris(4-carboxyphenyl)benzene; solv = H2O, CH3OH] has been shown to be a good platform for luminescent ratiometric thermometry. Although operative over a wide range of temperatures (10–320 K), this material exhibits, in the cryogenic range (<100 K), one of the best performances of metal–organic frameworks, with a relative thermal sensitivity of 2.85 % K–1 at 14 K. The material exists in the form of nanoparticles, suitable for nanothermometry applications (e.g., microfluidics). Moreover, as MIL-103 is nanoporous, its use as a multisensing platform deserves further consideration in the near future.