CRCU

Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (6): 1054-1057.

• Articles • Previous Articles     Next Articles

Eu(III) Complex-doped PMMA with Fast Radiation Rate and High Emission Quantum Efficiency

ZHANG Jin-li1, CHEN Bo-wei2, LUO Xuan1, DU Kai1   

  1. 1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China;
    2. School of Physics and Electronic Engineering, Mianyang Normal University, Mianyang 621000, P. R. China
  • Received:2012-03-21 Revised:2012-06-25 Online:2012-11-25 Published:2012-11-09
  • Contact: DU Kai E-mail:icf802@163.com

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Abstract:

Two Eu(III) complexes, (tris-4,4,4-trifluoro-1-phenyl-1,3-butanedione)(1,10-phenanthroline)europium(III) [Eu(tpb-H)3(phen)] and (tris-4,4,4-trifluoro-1-phenyl-1,3-butanedione)(2,2′-bipyridine)europium(III)[Eu(tpb-H)3-(bipy)] were synthesized from bi-dental oxygen and nitrogen ligands. Luminescent polymers were fabricated by incorporating deuterated Eu(III) complexes in poly(methylmethacrylate)(PMMA) matrixes. Luminescent PMMA containing Eu(tpb-D)3(phen) exhibited relatively higher quantum yield[Φ, (48.7±4)%], faster radiation rate(kr, 7.49×102 s-1), sharper red emission[full width at half maximum(FWHM), 6.3 nm] and larger stimulated emission cross-section (SEC, 1.29×10-20 cm2). The value of SEC is the same order as that of Nd-glass laser for practical use. Additionally, the thermal properties of Eu(tpb-H)3(phen), Eu(tpb-H)3(bipy), Eu(tpb-D)3(phen)-PMMA, and Eu(tpb-H)3(bipy)-PMMA were studied, indicating that the Eu(III) complexes and luminescent PMMA can be used for a long-term period in high temperature environment. Prepared luminescent polymers including Eu(tpb-D)3(phen) have promising applications in novel organic Eu(III) devices, such as the high-power laser materials and optical fibers.

Key words: Photophysics, Fluorescence, Rare earth