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Green luminescence system containing a Tb 3+ ‐β‐diketonate complex doped in the epoxy resin as sensitizer
Author(s) -
Parra Duclerc Fernandes,
Mucciolo Adriana,
Brito Hermi Felinto
Publication year - 2004
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.20771
Subject(s) - terbium , luminescence , epoxy , thermogravimetry , materials science , polymer , differential scanning calorimetry , doping , quenching (fluorescence) , photoluminescence , analytical chemistry (journal) , chemistry , infrared spectroscopy , nuclear chemistry , polymer chemistry , fluorescence , inorganic chemistry , composite material , organic chemistry , optics , physics , optoelectronics , thermodynamics
Photoluminescent properties of the terbium tris(acetylacetonate)tetrahydrated [Tb(acac) 3 (H 2 O) 4 ], doped in the epoxy resin, in the solid state are reported. The polymeric Tb 3+ system and the precursor terbium complex were characterized by elemental analysis, thermogravimetry, differential scanning calorimetry, and infrared and electronic spectroscopy. The excitation and emission spectra of the samples containing the Tb 3+ complex doped diglycidyl epoxy resin were recorded at 298 and 77 K and exhibited the characteristic bands arising from the 5 D 4 → 7 F J transitions ( J = 6–0). The system shows an increase in the luminescence intensity with the increase in the Tb 3+ complex in the 1, 5, and 10% concentrations due to the energy transfer from the polymer to the rare earth ion. On the other hand, the concentration quenching of luminescence of polymer doped with 15% of the Tb 3+ complex was observed. The lifetime measurements (τ = 0.81, 0.80, 0.79, and 0.78 ms) decrease with the increase of Tb 3+ ‐complex concentration (1, 5, 10, and 15%) doped in polymer. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 865–870, 2004