Ce:YAG nanoparticles embedded in a PMMA matrix: preparation and characterization.
A Ce:YAG-poly(methyl methacrylate) composite was prepared using in situ polymerization by embedding the Ce:YAG nanopowder in a blend of methyl methacrylate (MMA) and 2-methacrylic acid (MAA) monomers and activating the photopolymerization using a radical initiator. The obtained nanocomposite was yellow and transparent. Its characterization was performed using transmission electron microscopy, small angle X-ray scattering, (13)C cross-polarization magic-angle spinning nuclear magnetic resonance, and photoluminescence spectroscopy. Results showed that Ce:YAG nanoparticles are well dispersed in the polymeric matrix whose structure is organized in a lamellar shape. The luminescence properties of the nanocomposite do not show quenching or a significant spectral shift, indicating that the nanocomposite can be useful for advanced applications such as white LED construction.
Saladino
Maria Luisa
ML
Dipartimento di Chimica Fisica F. Accascina and INSTM UdR di Palermo, Università di Palermo, Parco d'Orleans II, Viale delle Scienze pad. 17, Palermo 90128, Italy. saladinoluisa@unipa.it
Zanotto
Antonio
A
Chillura Martino
Delia
D
Spinella
Alberto
A
Nasillo
Giorgio
G
Caponetti
Eugenio
E