Two kinds of Eu-complexes, Eu(TTA) 2 (Phen)(AA) and Eu(TTA) 2 (Phen)(MA) (HTTA=2-Thenoyltrifluoroacetone, Phen=1,10- phenanthroline, AA=acrylic acid, MA=Maleic anhydride), which combined the excellent fluorescence properties of Eu(TTA) 2 (Phen)(H 2 O) and the reactivity of acrylic acid and maleic anhydride with radicals, were synthesized. The two complexes were characterized by elemental analysis, infrared (IR) spectra, and X-ray photoelectron spectroscopy (XPS). Based on the data shown from the fluorescent spectra of the Eu-MA and Eu-AA complexes, the Ω λ (λ=2 and 4) experimental intensity parameters were calculated. The results demonstrated that the Ω 2 intensity parameters for the two complexes were smaller than those for the Eu(TTA) 2 (Phen)(H 2 O) complex, indicating that a less symmetrical chemical environment existed in the complexes. It implied that the radiative efficiency of the 5 D 0 of these two complexes could be enhanced by ligand of MA and AA, respectively. The luminescent lifetime of the Eu-AA (τ=7.26×10 −4 s) or Eu-MA complex (τ=8.12×10 −4 s) was higher than that of the Eu(TTA) 2 (Phen)(H 2 O) complex, which was attributed to the substitution of the water molecule (H 2 O) in Eu(TTA) 2 (Phen)(H 2 O) by the MA or AA ligand.