Photoluminescent properties of the polyamide /Eu3+ β-diketonate complex for optical application
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2021
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INTERNATIONAL CONFERENCE ON LUMINESCENCE, 19th
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The Eu3+ complex precursor, the polymeric (PA) optical marker and the plastic
luminescent films obtained were characterized by infrared spectroscopy (FTIR), X-Ray
diffractometry (DRX), emission spectroscopy, and thermogravimetry (TGA). The
emission spectra of the Eu3+–tta complex doped in the PA exhibited the characteristic
bands arising from the 5D0 → 7FJ transitions (J = 0-4). High values of the Ω2 intensity
parameter were obtained, indicating the hypersensitive character of the 5D0 → 7F2
transitions and the Eu3+ ions are in a polarizable chemical environment. The high values
of the Ω4 parameter confirm the basicity of the oxygen donor from the polymer.
Lifetime measurement suggests that doped Eu3+ ion has higher luminescence efficiency
in the film than hydrated complex. The emission quantum efficiencies (η) and the
highest value are observed in the system PA:[Eu(tta)3(H2O)2] 5%. The PA-optical
marker resulted a luminescent plastic film, with high stability when processing.
Como referenciar
PARRA, DUCLERC F.; MARCHINI, LEONARDO G.; FELINTO, MARIA C.; BRITO, HERMI F. Photoluminescent properties of the polyamide /Eu3+ β-diketonate complex for optical application. In: INTERNATIONAL CONFERENCE ON LUMINESCENCE, 19th, July 26-30, 2021, Changchun, China. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/32672. Acesso em: 26 Apr 2024.
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