Europium and Terbium Coordination Polymers Assembled from Hexacarboxylate Ligands: Structures and Luminescent Properties Yanli Gai Feilong Jiang Lian Chen Mingyan Wu Kongzhao Su Jie Pan Xiuyan Wan Maochun Hong 10.1021/cg401452p.s002 https://acs.figshare.com/articles/dataset/Europium_and_Terbium_Coordination_Polymers_Assembled_from_Hexacarboxylate_Ligands_Structures_and_Luminescent_Properties/2317810 Six lanthanide coordination polymers of the formula [Ln­(L<sup>1</sup>)<sub>0.5</sub>(H<sub>2</sub>O)<sub>2</sub>]·2H<sub>2</sub>O [where Ln<sup>3+</sup>: Eu<sup>3+</sup> (<b>1</b>), Tb<sup>3+</sup> (<b>2</b>), and Gd<sup>3+</sup>(<b>3</b>)] and [Me<sub>2</sub>NH<sub>2</sub>]­[Ln­(H<sub>2</sub>L<sup>2</sup>)­(H<sub>2</sub>O)<sub>4</sub>]·0.5DMF·<i>x</i>H<sub>2</sub>O [where Ln<sup>3+</sup>: Eu<sup>3+</sup> (<b>4</b>), Tb<sup>3+</sup> (<b>5</b>), and Gd<sup>3+</sup>(<b>6</b>)], based on <i>p</i>-terphenyl-2,2″,2‴,5,5″,5‴-hexacarboxylate acid (H<sub>6</sub>L<sup>1</sup>), and <i>p</i>-terphenyl-3,2″,3″,5,5″,5‴,-hexacarboxylate acid (H<sub>6</sub>L<sup>2</sup>), have been solvothermally synthesized and structurally characterized. Complexes <b>1</b>–<b>3</b> are 3D frameworks exhibiting 6-connected pcu alpha-Po primitive cubic network with topology (4<sup>12</sup>.6<sup>3</sup>), while complexes <b>4</b>–<b>6</b> show two-dimensional (2D) architectures showing simplified 3,4-connected binodal net and (4.6<sup>2</sup>)­(4<sup>2</sup>.6<sup>2</sup>.8<sup>2</sup>) topology. Detailed photophysical behaviors have been explored on Eu<sup>3+</sup>, Tb<sup>3+</sup>, and Gd<sup>3+</sup> complexes. The calculated triplet state energies of H<sub>6</sub>L<sup>1</sup> and H<sub>6</sub>L<sup>2</sup> lie above the emissive levels of Eu<sup>3+</sup> or Tb<sup>3+</sup> in an ideal range for sensitizing. Furthermore, it is demonstrated that the optimum energy gap between the triplet state of ligand H<sub>6</sub>L<sup>1</sup> and the emissive level of Tb<sup>3+</sup> ion makes the overall quantum yield of Tb<sup>3+</sup> complex (<b>2</b>) larger than its corresponding Eu<sup>3+</sup> complex (<b>1</b>). In addition, the coordinated water in the inner sphere has a significant negative influence on the overall quantum yield, especially for the Eu<sup>3+</sup> complex (<b>4</b>) compared to the Tb<sup>3+</sup> complex (<b>5</b>), due to the deactivation process caused by vibrational OH oscillators. 2014-03-05 00:00:00 Luminescent PropertiesSix lanthanide coordination polymers Terbium Coordination Polymers Assembled H 6L triplet state energies vibrational OH oscillators Gd 3 D frameworks Eu 2NH ligand H 6L Ln Tb