Abstract

Thermometry at the nanoscale has become commercially relevant and has attracted intense research. Due to their peculiar photophysical properties, materials and compounds based on lanthanide ions are being employed in developing nanothermometers that attempt to fulfill properties like, well-stablished state equation (primary thermo-meter), self-calibration, high relative sensibility, high spatial and temporal resolutions. We propose, for the first time, the application of the excitation spectra of complex: 1 [Eu(hfa)3bpyO2] [1], novel 2 [Eu(bpyO2)(Cl)2(H2O)4]+ [2], and 3 [Eu(bpyO2)4]3+ [2], to obtain thermometric parameters (Δ) with those properties and to elaborate new thermometers in the nanoscale with high relative sensibility.