A new Tb(III) complex based on 3-pyridylacetic acid, [Tb(H(3-PAA)₂)(NO₃)₂] (1, 3-PAA=3-pyridylacetic acid), has been triumphantly prepared and structurally characterized. Complex 1 is a 1D chained structure linked by carboxylate groups of the 3-PAA ligand, and its 2D supramolecular packing is controlled mainly by hydrogen-bonds. The compound exhibits outstanding thermal stability and excellent stability under ethanol solutions. Moreover, compound 1 shows a strong solid-state green-emitting emission at room temperature, which demonstrates that the ligand can effectively sensitize the emission of the Tb(III) ion, and it can serve as a responsive sensing material for detecting the Fe³⁺ ion in ethanol solutions.

中文翻译：

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基于 3-吡啶乙酸的 Tb(III) 络合物可发光检测 Fe3+ 离子

成功制备了一种基于3-吡啶乙酸的新型Tb(III)配合物[Tb(H(3-PAA) ₂ )(NO ₃ ) ₂ ] ( 1 , 3-PAA=3-吡啶乙酸)并进行了结构分析特点。配合物1是由3-PAA配体的羧酸酯基团连接的一维链状结构，其二维超分子堆积主要由氢键控制。该化合物表现出出色的热稳定性和乙醇溶液下的优异稳定性。此外，化合物1在室温下表现出很强的固态绿光发射，这表明该配体可以有效地敏化Tb(III)离子的发射，并且可以作为检测Fe ^{3的响应传感材料。 +}乙醇溶液中的离子。