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 [Tb0.995Eu0.005(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.