Abstract
Three three-dimensional lanthanide coordination polymers [Ln2(pda)2(HCOO)(OH)(H2O)]n (Ln=Dy, 1; Tb, 2; Ho, 3; H2pda=p-phenylenediacrylic acid) have been solvothermally synthesized and their structures have been determined using either X-ray powder or single-crystal diffraction data. They are isostructural and possess a 3D architecture with the pcu (α-Po) net topology based on the parallel 1D lanthanide–oxygen rod-shaped secondary building units, each of which is connected to four other rods by the pda ligands. The photoluminescent properties of 1–3 have been investigated. Complexes 1–3 all display the intense blue emission in the solid state at room temperature. Especially, compared with the free H2pda ligands, 1 shows the strong fluorescence enhancement due to the complexation.
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