A family of highly stable lanthanide coordination polymers incorporating fluorine-substituted carboxylate tectonics and the rigid ligand phenanthroline, namely, {[Ln m (Tfbda) n (Phen) 2 $2H 2 O]$2H 2 O} z , (Ln ¼ Pr (1), Ho (4) and Gd (7) (5) and Yb (6)4,5-tetrafluorobenzoic acid have been afforded under hydrothermal conditions. The series of coordination polymers exhibited diverse structural motifs, from dinuclear cluster to 1-D chain arrary, displaying efficiently sensitized luminescence over a spectral range from visible to near-infrared (NIR) region and a long lifetime, due to efficient energy transfer from fluorine-substituted ligands to Ln(III) centers in solid state. Slow relaxation magnetization and significant frequency-and temperature-dependent peaks were observed in trinuclear Dy(III)-based coordination polymer 3. DC magnetic susceptibility studies reveal the existence of weak ferromagnetic interaction within 7. † Electronic supplementary information (ESI) available: The full experimental information of complexes, the simulated and experimental powder XRD patterns of 2-6, additional structural, UV-visible absorption and spectroscopy gures, and the tables of selected bond distances/angles, etc. CCDC 1895890-1895895. For ESI and crystallographic data in CIF or other electronic format see
The binary compound Ln-CP Tb0.897Eu0.103tcptpy has been developed as a ratiometric luminescent thermometer. Its relative sensitivity can reach up to 8.41% K−1 in the 305 to 340 K range.
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