The Versatility of MOFS as a Powerful Tool to Design Luminescent Thermometers
The temperature is a basic physical parameter that is essential in both science and industry areas. One of most promising non-invasive technique to measure the temperature relies on ratiometric luminescent thermometers where the absolute temperature is optically determined via the measurements of the intensities of two transitions of distinct emitting centers. If the first studies on luminescence thermometry refer to inorganic compounds such as oxides, fluorides or sulfides, metal-organic frameworks (MOFs) recently appeared as promising candidates. In the last decades, MOF materials have been investigated as various sensors due to their multiple luminescent centers and tunable luminescence properties. Indeed, compared with organic dyes or inorganic luminescent materials, the luminescence of MOFs is more diverse because the metal nodes, organic linkers, ligand-metal charge transfer, and guest species within framework can potentially generate emissions. Consequently, many combinations are possible to elaborate ratiometric MOF luminescent thermometers. Here, we will propose a small overview of the state-of-the-art about the use of MOFs in this hot topic, and our recent results.
Speaker
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Hélène Serier-BraultUniversity of Nantes & IMN-CNRS, Nantes, FranceHélène Brault is currently an Associate Professor in Chemistry at University of Nantes (Institut des Matériaux de Nantes Jean Rouxel, IMN-CNRS, Nantes, France). She obtained her Ph.D. degree in Inorganic Chemistry (2009) at University of Bordeaux (ICMCB, France), where she worked on opto-electronic properties of zinc oxide and fluoride. She obtained a Humbodlt fellow to join Martin Jansen’s group (Max-Planck Institute of Solid-State Chemistry, Stuttgart, Germany) in 2009 as postdoctoral researcher to investigate the role of high pressure on oxide containing lone-pair metals. Then, she joined the group of Dr. M. Mortier (LCMCP, Paris, France), to work on luminescent fluoride glasses. She became Associate Professor in Chemistry in 2011 at the University of Nantes, where she started working on various luminescent inorganic materials. Since 2016, her current research topics are mainly focused on lanthanide-based metal-organic frameworks for luminescence thermometry.