Europium-Containing Luminescent Composites Based on Lead(II)-Modified Poly(methylmethacrylate)
Source abstract
Abstract
Abstract— Composites based on poly(methylmethacrylate) (PMMA) and lead and europium salts, with the compositions PMMA/Pb(CF3COO)2 and PMMA/Pb(CF3COO)2,Eu(CF3COO)3, have been prepared by curing methylmethacrylate (MMA) based solutions via thermal radical block polymerization of MMA. The refractive index of MMA + Pb(CF3COO)2 solutions and the density of the PMMA/Pb(CF3COO)2 polymer composites have been shown to increase linearly as the Pb salt concentration increases to 83 wt % (40 wt % elemental Pb). The optical transmission of the composites at wavelengths above 450 nm and the highest lead and europium concentrations reaches 90% at sample thicknesses of up to 5 mm. The lead equivalent at a Pb(II) concentration of 40 wt % is 0.010. Photoluminescence in the PMMA/Pb(CF3COO)2,Eu(CF3COO)3 composites is due to Eu3+ electronic transitions from the 5D0 metastable electron energy level to the 7Fj sublevels of the ground level. We have demonstrated the influence of lead(II) and europium(III) on the properties of the matrix and the influence of the matrix and Pb(II) on absorption and luminescence spectra of europium(III).
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Lanthanide and Transition Metal Complexes · Luminescence Properties of Advanced Materials · Radioactive element chemistry and processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
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