New photoluminophore nanocomposite based on organic compound with Eu 3+ ions and copolymer styrene-butylmethacrilate

• Published in: Journal of non-crystalline solids Vol. 355; no. 37; pp. 1890 - 1892
• Main Authors: Iovu, M.S., Andriesh, A.M., Buzurniuc, S.A., Verlan, V.I., Turta, C.I., Zubareva, V.E., Caraman, M.I.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-10-2009
• Subjects: Nano-composites; Optical properties; Polymers and organics; Rare-earths in glasses; 78.55.−m; Nano-composites; Polymers and organics; Optical properties; Rare-earths in glasses
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2009.04.047

New nanocomposite (NC) material on the base of thenoyltrifluoroacetone (TTA) coordinated with trivalent europium ions and structured with phenantroline (Eu(TTA)
3Phen) and copolymer from styrene and butylmethacrylate (1:1) (SBMA) was prepared. The visible photoluminescence spectra of composites excited with N
2-laser (
λ
=
0.337
μm) at room and
T
=
78
K temperatures were studied. For the Eu(TTA)
3Phen/SBMA nanocomposite material emission bands located at 578, 590, 612, 675 and 705
nm can be attributed to the spin forbidden f–f transitions
5D
0
→
7F
i
(
i
=
0,1,2,3 and 4), respectively. The more intensive luminescence band situated at 612
nm with the half width of 3
nm is connected to the Eu
3+ ion electronic transition
5D
0
→
7F
2. It was shown that the maximum intensity of photoluminescence occurs at the concentration of 15% of the Eu(TTA)
3Phen in the SBMA polymer matrix.