Preparation of Eu(BA)3phen/PVP Fluorescent Nanofibers by Electrospinning

Eu(BA)(3)phen/PVP fluorescent nanofibers has been successfully fabricated based on PVP and europium complexes Eu(BA)(3)phen (BA = benzoic acid, phen = phenanthroline) via electrospinning technology. The as-prepared samples were characterized by field-emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS) and fluorescence spectroscopy (FS). The as-prepared Eu(BA)(3)phen/PVP nanofibers possess good fibrous morphology, smooth surface and narrow size distribution. The average diameter of nanofibers was about 250 nm. Under the excitation of 274-nm ultraviolet light, Eu(BA)(3)phen/PVP nanofibers exhibit red emissions of predominant peaks at 592 and 616nm, which are respectively attributed to the D-5(0) -> F-7(1) and D-5(0) -> F-7(2) energy levels transitions of Eu3+ ions. The optimum mass percentage of Eu(BA)(3)phen to PVP is 15%. The fluorescent nanofibers are expected to apply in the fields of lasers, displays, amplifiers for optical communication, and medical imaging, etc.