Tuning the sensitivity of Ln3+-based luminescent molecular thermometers through ligand design

摘要: Abstract Luminescence thermometry is being addressed as one of the most promising techniques to non-contact measurement temperature with sub-micrometric resolution, due possibility design thermometer performance by smart combination emitting centers, ligands and host matrix. Numerous applications in microelectronic circuits photonic devices will benefit improved spatial temporal resolution imaging. In this paper we report three Ln 3+ -based (Ln=Eu, Tb) molecular thermometers co-doping an organic–inorganic hybrid matrix Eu /Tb chelates that differ ligand used. We show sensitivity such can be tuned from 0.042±0.002 3.0±0.4% •K −1 , 295–330 K range, through wisest (and ligand-hybrid interactions). The maximum value largest reported so far for luminescent ratiometric thermometers. Furthermore, rationalize increase on using a partial energy scheme involving levels ions singlet triplet states host.