Synthesis, crystal structures, and luminescence properties of carboxylate based rare-earth coordination polymers.
Rare-earth coordination polymers or lanthanide-organic frameworks with hitherto unreported crystal structures have been obtained on the basis of the "light" lanthanides Pr, Nd, Sm, and Eu in combination with terephthalic acid and using a slightly altered literature synthesis procedure. Rietveld refinement has shown that powder XRD patterns of such compounds are largely dominated by the positions of the heavy elements, pointing to isostructural networks for all four terephthalate-based materials. An in-depth luminescence study has been performed on the reported MOFs, showing rare praseodymium and samarium emission in the visible spectrum, aside from the strong europium luminescence and the near-infrared emission from both a terephthalate and 2,5-pyridinedicarboxylate based neodymium-MOF.
Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Gent, Belgium.
Roel
R
Decadt
Kristof
K
Van Hecke
Diederik
D
Depla
Karen
K
Leus
David
D
Weinberger
Isabel
I
Van Driessche
Pascal
P
Van Der Voort
Rik
R
Van Deun