LAUSR

Abstract A new one-dimensional luminescent composite nanofiber of Eu(TFI) 3 TPPO/PVP (TFI = 2-(2,2,2-trifluoroethyl)-1-indone, TPPO = triphenylphosphine oxide, PVP = Poly(vinyl pyrrolidone) has been successfully prepared by electrospinning. The unique microstructure, thermal stability, and luminescent characteristics of the composite nanofibers have been revealed by high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), fluorescence microscope (FM), fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible spectroscopy (UV–Vis), thermogravimetric analysis (TGA), and fluorescence spectrophotometer (FS). The origin of the enhanced luminescent properties of composite nanofibers has been identified by Judd-Ofelt analysis. The experimental results suggest that PVP plays an essential role on the interaction between the Eu(TFI) 3 TPPO precursor and neighboring chain segments of PVP, leading to the increased polarization degree of Eu 3+ ions and significantly enhanced the electronic dipole allowed transitions of Eu 3+ ions, which further enhances the luminescent efficiency of composite nanofiber of Eu(TFI) 3 TPPO/PVP.