کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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610337 | 880647 | 2009 | 5 صفحه PDF | دانلود رایگان |
LaPO4:Ce3+, Tb3+ nanoparticles were prepared by the reverse microemulsion with functional monomer, methyl methacrylate (MMA) as oil phase, and LaPO4:Ce3+, Tb3+/poly(methyl methacrylate) (PMMA) nanocomposite was obtained via polymerization of MMA monomer. The nanoparticles and nanocomposite have been well characterized by XRD, SEM, TEM, UV/vis spectrum, photoluminescence excitation and emission spectra and luminescence decays. The obtained solid nanocomposite LaPO4:Ce3+, Tb3+/PMMA is highly transparent and exhibits strong green photoluminescence upon UV excitation, due to the integration of luminescent LaPO4:Ce3+, Tb3+ nanoparticles. The luminescent lifetime of Tb3+ is determined to be 1.25 ms in the nanocomposite.
Photographs of dispersion of La0.45Ce0.45Tb0.1PO4 nanoparticles in microemulsion after reaction at 50 °C for 1 h (a and b) and La0.45Ce0.45Tb0.1PO4/PMMA nanocomposite (c and d). (a and c): under daylight; (b and d): under UV excitation in dark (λ = 365 nm).Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 336, Issue 1, 1 August 2009, Pages 46–50