Development of highly luminescent PMMA films doped with Eu3+β‑diketonate coordinated on ancillary ligand
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Journal of Materials Science: Materials in Electronics
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In this work, [Eu(tta)3(4-picNO)2] and [Eu(dbm)3(4-picNO)] complexes were incorporated on different concentrations (x = 1,
3, 5, 10 and 15%) in PMMA polymeric matrix (4-picNO: 4-Methylpyridine N-oxide) by the solvent casting method, yielding
transparent and highly luminescent polymeric films. These materials were analyzed by X-ray diffraction, scanning electron
microscopy and by energy dispersive, ultraviolet–visible spectroscopy, luminescence and vacuum ultraviolet–ultraviolet
spectroscopies. The luminescence spectra of doped PMMA films are in agreement with an efficient intramolecular diketonate
(tta) ligand-to-europium energy transfer. Furthermore, the values of experimental intensity parameters (Ω2,4) for luminescent
polymeric materials were quite similar to those ones for isolated complexes, indicating that there is a homogeneous dispersion
of Eu3+
complexes in the polymeric matrix, preserving their chemical and structural features. These behavior were
also observed from the CIE diagram that show great similarity between the (x,y) coordinates for the doped PMMA samples
compared to the isolated β-diketonate complexes with a reddish color tuning. The photostability investigation of the doped
PMMA polymeric films and Eu3+
complexes has been also reported.
Como referenciar
FRANCISCO, L.H.C.; FELINTO, M.C.F.C.; BRITO, H.F.; TEOTONIO, E.E.S.; MALTA, O.L. Development of highly luminescent PMMA films doped with Eu3+β‑diketonate coordinated on ancillary ligand. Journal of Materials Science: Materials in Electronics, v. 30, n. 18, p. 16922-16931, 2019. SI. DOI: 10.1007/s10854-019-01639-9. Disponível em: http://repositorio.ipen.br/handle/123456789/30405. Acesso em: 30 Dec 2025.
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