Abstract A new series of non-porous, three-dimensional coordination frameworks, i.e. [LnIII(bdc)0.5(phth)(H2O)2], where LnIII = EuIII, TbIII, HoIII, ErIII and TmIII, phth2- = 1,2-benzenedicarboxylate, and bdc2- = 1,4-benzenedicarboxylate, were synthesized and characterized. The frameworks have two-dimensional sheets of which the stoichiometry is the same as the framework containing only phth2-. Architecture, topology and thermal stability of the frameworks were examined. Temperature-dependent photoluminescent properties of the EuIII and TbIII frameworks were studied and discussed with reference to those containing only phth2- and bdc2-. The mixed EuIII/TbIII frameworks were also prepared and their temperature-dependent photoluminescent properties were investigated, revealing energy transfer from TbIII to EuIII and its dependence on EuIII content. Graphical Abstract

中文翻译：

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混合苯二羧酸镧系元素配位骨架的晶体结构和温度依赖性光致发光

摘要 一系列新的无孔三维配位框架，即[LnIII(bdc)0.5(phth)(H2O)2]，其中LnIII = EuIII、TbIII、HoIII、ErIII和TmIII，phth2- = 1,2合成并表征了-苯二羧酸盐和bdc2- = 1,4-苯二羧酸盐。骨架具有二维薄片，其化学计量与仅包含 phth2- 的骨架相同。检查了框架的架构、拓扑和热稳定性。参考仅包含 phth2- 和 bdc2- 的那些，研究和讨论了 EuIII 和 TbIII 框架的温度依赖性光致发光特性。还制备了混合的 EuIII/TbIII 骨架，并研究了它们的温度依赖性光致发光特性，揭示了从 TbIII 到 EuIII 的能量转移及其对 EuIII 含量的依赖性。