Flexible hollow nanofibers: Novel one-pot electrospinning construction, structure and tunable luminescence–electricity–magnetism trifunctionality

摘要: Abstract Novel photoluminescent–electrical–magnetic trifunctional flexible Tb(BA) 3 phen/PANI/Fe O 4 /PVP (BA = benzoic acid, phen = phenanthroline, PANI = polyaniline, PVP = polyvinylpyrrolidone) hollow nanofibers were constructed by one-pot coaxial electrospinning process using spinneret. Very different from the traditional preparation of fibers via electrospinning, which need to firstly fabricate and followed removing core through high-temperature calcination or solvent extraction, in our present study, no spinning solution is used directly nanofibers. The morphology properties characterized detail X-ray diffractometry, scanning electron microscopy, transmission microscope, N 2 adsorption–desorption measurement system, fluorescence spectroscopy, 4-point probes resistivity system vibrating sample magnetometry. nanofibers, with outer diameters ca . 238 nm inner diameters​ 80 nm, exhibit excellent photoluminescent performance, electrical conductivity magnetic properties. Fluorescence emission peaks Tb 3+ ions are observed assigned 5 D  →  7 F 6 (490 nm), (545 nm), (585 nm) (621 nm) energy level transitions , hypersensitive transition at 545 nm predominant peak. reaches up order 10 −3  S cm −1 luminescent intensity, can be tuned adding various amounts phen, PANI Fe nanoparticles. new-typed hold potential for a variety applications, including electromagnetic interference shielding, microwave absorption, molecular electronics biomedicine. This design conception synthetic strategy developed this study universal significance construct more advanced multifunctional one-dimensional nanomaterials.