Photoluminescence-electricity-magnetism trifunction simultaneously assembled into one flexible nanofiber

摘要

In order to develop new-typed multifunctional composite nanofibers, Eu(BA)_2phen/PANI/Fe_3O_4/PVP tri-functional composite nanofibers with photoluminescence, electricity and magnetism have been successfully fabricated via electrospinning technology. Polyvinyl pyrrolidone (PVP) is used as a matrix to construct composite nanofibers containing different amounts of Eu(BA)_3phen, polyaniline (PANI) and magnetite Fe_3O_4 nanoparticles (NPs). X-ray diffractometry, scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, fluorescence spectroscopy and Hall effect measurement system are used to characterize the morphology and properties of the obtained composite nanofibers. The results indicate that the trifunctional composite nanofibers possess excellent luminescent, electrical conductivity and magnetic properties. Fluorescence emission peaks of Eu~(3＋) are observed in the Eu(BA)_3phen/PANI/Fe_3O-4/PVP photoluminescent-elec-trical-magnetism trifunctional composite nanofibers and assigned to the of ~5D_0 → ~7F_0 (580 nm), ~5D_0 →~ 7F_1 (593 nm) of Eu~(3＋), and the ~5D_0 → ~7F_2 hypersensitive transition at 615 nm is the predominant emission peak. The electrical conductivity reaches up to the order of 10~(-3) S/cm. The luminescent intensity, electrical conductivity and saturation magnetization of the composite nanofibers can be tunable by adding various amounts of Eu(BA)_3phen, PANI and Fe_3O_4 NPs. The multifunctional composite nanofibers are expected to possess many potential applications in areas such as electromagnetic interference shielding, microwave absorption, molecular electronics and biomedicine.