Differentiated Fluorescence Centers in Europium Acetylacetonate Hydrate Doped Poly Methyl Methacrylate

作者：Zhang Yang-yang; Zhong Hua; Chen Bao-jiu; Xia Ying; Lin Hai^*

来源：Spectroscopy and Spectral Analysis, 2014, 34(6): 1482-1485.

DOI：10.3964/j.issn.1000-0593(2014)06-1482-04

• Poly methyl methacrylate (PMMA)
• Europium acetylacetonate hydrate
• Differentiated fluorescence centers

Poly methyl methacrylate (PMMA) was doped with europium acetylacetonate hydrate. Judd-Ofelt parameters Omega(2) (19.73 X 10(-20) cm(2)) and Omega(4) (2.19 X 10(-20) cm(2)) indicate a high inversion asymmetry and strong covalent environment around Eu3+ in PMMA. The maximum stimulated emission cross-sections for the D-5(0) -> F-7(J) (J = 1, 2 and 4) transitions in EAH doped PMMA were calculated to be 0.38 X 10(-21), 4.90 X 10(-21) and 0.36 X 10(-21) cm(2), respectively. Efficient purplish-red and red fluorescence was obtained from europium acetylacetonate hydrate doped PMMA under 365 and 254 nm excitation respectively, indicating that it can be used as UV sensitive components for fiber optic sensors. Because of the suitable refractive index difference between doped sample and pure PMMA, it is expected to fabricate standard 9 mu m/125 mu m optical fiber which supports multi-mode transmission, providing basis of further development for medical fiber, flexible communication fiber and fiber optic sensor.

• 出版日期2014-6
• 单位大连工业大学; 大连海事大学