Herein, a study is presented, addressed to understand the influence of the terbium (III) species contained in a thermoplastic polyurethane (TPU) matrix. The studied terbium (III) species were terbium (III) nitrate, Tb(NO₃)₃·5H₂O, and a terbium (III) complex, [TbL (NO₃)₂](NO₃) (H₂O), where L is a macrocyclic ligand derived from 2,6-pyridinedicarboxyaldehyde and ethylenediamine. SEM-EDXS showed that in both films the terbium (III) species were homogeneously distributed in the polymer matrix. The film doped with the nitrate salt displayed different physical properties, in comparison to the pristine TPU and the film containing the terbium (III) complex.

Both TPU/Tb^III films, exhibiting a green color emission, with a G/B ratio being temperature independent. By comparison of the emission of both films containing terbium (III) species, the TPU/Tb^III complex film presented a more intense luminescence due to the antenna effect. TPU doped with the nitrate salt showed weak emission, indicating the lack of sensitizing groups.

在此，提出了一项研究，旨在了解热塑性聚氨酯 (TPU) 基质中所含的铽 (III) 物种的影响。研究的铽 (III) 物质是硝酸铽 (III)、Tb(NO ₃ ) ₃ ·5H ₂ O 和铽 (III) 复合物 [TbL (NO ₃ ) ₂ ](NO ₃ ) (H ₂ O) ，其中 L 是衍生自 2,6-吡啶二甲醛和乙二胺的大环配体。SEM-EDXS 表明，在两种薄膜中，铽 (III) 物质均匀分布在聚合物基质中。与原始 TPU 和含有铽 (III) 络合物的薄膜相比，掺杂硝酸盐的薄膜显示出不同的物理特性。

两种 TPU/Tb ^III薄膜均呈现绿色发射，G/B 比与温度无关。通过比较含有铽 (III) 物质的两种薄膜的发射，由于天线效应，TPU/Tb ^III复合薄膜呈现出更强烈的发光。掺杂硝酸盐的 TPU 显示出微弱的发光，表明缺乏敏化基团。