Effect of terbium(III) species on the structure and physical properties of polyurethane (TPU)

Villagra, Danae; Fuentealba, Pablo; Spodine, Evgenia; Vega, Andrés; Santana, Ricardo Costa de; Verdejo, Raquel; Lopez-Manchado,  Miguel Angel; Aguilar-Bolados, Héctor

Effect of terbium(III) species on the structure and physical properties of polyurethane (TPU)

Data

2021

Autores

Santana, Ricardo Costa de

Verdejo, Raquel

Lopez-Manchado, Miguel Angel

Aguilar-Bolados, Héctor

Resumo

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/TbIII 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/TbIII 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.

Palavras-chave

Thermoplastic polyurethane, Terbium species, Luminescent properties

Citação

VILLAGRA, Danae at al. Effect of terbium(III) species on the structure and physical properties of polyurethane (TPU). Polymer, Amsterdam, v. 233, e124209, 2021. DOI: 10.1016/j.polymer.2021.124209. Disponível em: https://www.sciencedirect.com/science/article/pii/S0032386121008326. Acesso em: 23 maio 2023.