Preparation and characterization of the lanthanide complex Eu(TTA)3phen / vinyl pyrrolidone luminescent nanofiber by electrospinning

摘要

Eu(TTA)3phen/vinyl pyrrolidone (PVP) composite nanofibers have been prepared by electrospinning technique. The spectral properties of Eu(TTA)3phen/PVP composite nanofibers have been studied, as compared to that of Eu(TTA)3phen powders. The excitation of Eu(TTA)3phen/PVP systems by UV light results in a ligand-to-metal energy transfer and the emission spectra display characteristic luminescence of the central ions (~5D_0 ->~7F_2 for Eu~(3+)). Photoluminescence measurements show that Eu(TTA)3phen/PVP nanofibers have higher intensity and longer lifetime than that of Eu(TTA)3phen powders because of the influence of PVP on the coordinative environment of lanthanide ions.