We report Tb–Eu based luminescence sensor materials toward H ₂ O detection in D ₂ O with the highest sensitivity of 24%/%(H ₂ O), exceeding the previously reported ones by an order of magnitude.

The highest efficiency (430 μW W⁻¹) of pure ytterbium luminescence obtained to date for Yb-based OLEDs was reached based on the ytterbium complex with halogenated Schiff base ligands.

An efficiency of 441 μW W ⁻¹ was obtained using a novel purposefully designed ytterbium complex as a host-free solution processable emission layer in an OLED. The value is the highest to date and was reached due to the increase of the charge mobility.

Lanthanide coordination compounds contining multiple lanthanides are the most promising candidate materials for luminescent thermometry. Sensing elevated temperatures requires highly stable complexes and matrices, such as those of thermally stable polymers. However, most high-temperature polymers are not optically inert, and this can affect their thermometric properties, including decreasing their intensity and sensitivity. In the present paper, the proper selection of the combination of a matrix and two emitters allowed us to obtain a highly sensitive and highly emissive luminescent thermometry material, 1{5[Tb(Bz)₃Phen]₂+1[Eu(Bz)₃Phen]₂}:4PI4050, based on terbium and europium complexes in poly(ethylene glycol) diacrylate (PI4050), which is suitable for the detection of temperatures up to 200 °C.