A Doped Lanthanide-Based Coordination Polymer Exhibiting High Relative Sensitivity to Ratiometric Luminescent Thermometers at 440 K.

Ratiometric luminescent thermometers with excellent performance often require the luminescent materials to possess high thermal stability and relative sensitivity ( S r ). However, such luminescent materials are very rare, especially in physiological (298-323 K) and high-temperature (>373 K) regions. Here we report the synthesis and luminescent property of [Tb 0.995 Eu 0.005 (pfbz) 2 (phen)Cl] ( 3 ), which not only exhibits high S r in physiological temperature but also has a S r up to 7.47% K -1 at 440 K, the largest S r at 440 K in known lanthanide-based coordination compound luminescent materials.