Lanthanide Complexes Assembled from 3-Fluorophthalate and 1,10-Phenanthroline: Syntheses, Crystal Structure, Photoluminescence, and White-Light Emission

作者：Cha, Yu-E; Li, Xia^*; Ma, Dou; Huo, Rui

来源：European Journal of Inorganic Chemistry, 2014, 2014(18): 2969-2975.

DOI：10.1002/ejic.201402099

• Metal-organic frameworks
• Luminescence
• Lanthanides
• Bridging ligands
• Doping

Two different crystal forms, [Ln(4)(Fpht)(6)(phen)(6)(H2O)(4)]center dot nH(2)O (Ln = Eu 1, n = 14; Tb 2, n = 12) and [Ln(Fpht)(HFpht)(phen)(H2O)] (Ln = La 3, Eu 4, Tb 5) were obtained from the one-pot reaction of Ln(III) ions with 3-fluorophthalic acid (H(2)Fpht) and 1,10-phenanthroline (phen). Complexes 1 and 2 are centrosymmetric tetranuclear molecules with two crystallographically different Ln(III) ion environments, [Ln(1)O6N2] and [Ln(2)O4N4]. The complexes have a tridentate bridging Fpht ligand and a bidentate terminal Fpht ligand. Complexes 3-5 show 2D networks with [LnO(7)N(2)] polyhedra. There are two kinds of ligands, Fpht and HFpht, which adopt chelating-bridging/monodentate and bidentate-bridging coordination modes, respectively. The La-III complex shows ligand-centered fluorescence. Eu-III and Tb-III complexes display red D-5(0)-> F-7(0-4) and green D-5(4)-> F-7(6-2) characteristic luminescence, respectively. Intriguingly, white-light emission was produced when EuIII and TbIII were codoped into the 2D La-III complex.

• 出版日期2014-6
• 单位中国疾病预防控制中心; 首都师范大学