Two series of lanthanide-containing metal–organic frameworks (Ln-MOFs) of the general formula {[Ln(HIDA)₂H₂O]ClO₄·H₂O}_n (Ln = La (1), Nd (2), Eu (3), Gd (4), Tb (5), Eu:Tb (6); H₂IDA = iminodiacetic acid) and [Ln(TT) (HTT) (H₂O)₃]_n (Ln = Eu (7), Gd (8), Tb (9), Dy (10), and Eu:Tb (11); H₂TT = tartaric acid) were synthesized by reacting Ln(ClO₄)₃ with iminodiacetic acid and L-tartaric acid, respectively. All compounds were structurally characterized by single-crystal X-ray diffraction. Elemental analyses are consistent with the corresponding crystallographically generated formulas. Moreover, the luminescence properties of both the single and mixed-lanthanide complexes were studied. Near infrared, red, and green emissions that are characteristic of Nd(III), Eu(III), and Tb(III) are observed for 2, 3/7, and 5/9, respectively. For the two mixed-lanthanide complex systems 6 and 11, depending on the relative amount of Eu(III) and Tb(III), the color of emission can be fine-tuned. It is found that a small amount of Eu(III) is adequate for the observation of the most intense transition of Eu(III). This is believed to be a result of energy transfer from Tb(III) to Eu(III) within the same complex - a conclusion supported by the significantly shortened lifetime of Tb(III) and the accompanying enhanced lifetime of Eu(III) in the mixed-lanthanide complex with respect to the corresponding values for the pure Tb(III) and Eu(III) complexes with the same ligand.

通式为{[Ln（HIDA）₂ H ₂ O] ClO ₄ ·H ₂ O} _n（Ln = La（1），Nd（2）的两个系列的含镧系元素的金属有机骨架（Ln-MOFs ） ，Eu（3），Gd（4），Tb（5），Eu：Tb（6）； H ₂ IDA =亚氨基二乙酸）和[Ln（TT）（HTT）（H ₂ O）₃ ] _n（Ln = Eu（7），Gd（8），Tb（9），Dy（10）和Eu：Tb（11）; H ₂分别通过使Ln（ClO ₄）₃与亚氨基二乙酸和L-酒石酸反应合成TT（酒石酸）。所有化合物的结构均通过单晶X射线衍射表征。元素分析与相应的晶体学生成的公式一致。此外，还研究了镧系元素和复合镧系元素的发光特性。近红外，红，观察到绿色的排放是钕（III），铕（III），和Tb（III）的特性2，3 / 7，和5 / 9分别。对于两个混合镧系元素复杂系统6和11，根据Eu（III）和Tb（III）的相对含量，可以对发射的颜色进行微调。发现少量的Eu（III）足以观察到Eu（III）最强烈的转变。据信这是同一配合物中从Tb（III）到Eu（III）的能量转移的结果-这一结论得到了Tb（III）寿命显着缩短以及Eu（III）在玻璃中的寿命增加的支持。混合镧系元素络合物相对于具有相同配体的纯Tb（III）和Eu（III）络合物的对应值。