Electrospinning Construction And Characteristics Of Photoluminescence-Electricity-Magnetism Trifunctional Flexible Composite Thin Film

Recently,multifunctional composite materials have attracted inevasible attention of scientists owing to their unique properties and reduction effect of system size.It is an effective method to fabricate new materials by assembling 1D nanomaterials into two-dimensional（2D）or three-dimensional（₃D）macroscopic architectures.Electrospinning technology is a novel way to assemble 1D nanofibers into 2D films.Therefore,it is an important subject to prepare the membranous structure with the electrospinning technology.In this dissertation,2D dual-layered membrane materials assembled from 1D nanofibers have been fabricated via layer-by-layer electrospinning technology,including [Eu（TTA）₃（TPPO）2/PVP]/[PANI/Fe₃O4/PAN] dual-layered composite nanofibrous membrane,[Tb（TTA）₃（TPPO）2/PVP]/[PANI/Fe₃O4/PAN]bi-layered composite nanofibrous film,[Eu（TTA）₃（TPPO）2/Tb（BA）₃phen/PVP]/[Fe₃O4/PVP] dual-layered composite nanofibrous membrane and [Eu（TTA）₃（TPPO）2/Tb（BA）₃phen/PVP]/[PANI/Fe₃O4/PAN] dual-layered composite nanofibrous membrane.Afterwards,all of the samples were systematically characterized by a series of measurement techniques.The results reveal that the prepared samples own clearly dual-layered structure and consist of electrical conduction and magnetism at one layer and photoluminescent property at the other layer.Compared with the contrast samples,the fluorescent intensity of the novel dual-layered composite nanofibrous membrane exhibits much stronger emissions.What’s more,the electrical conduction and magnetism can be adjustable by respectively changing the dosages of PANI and Fe₃O4 NPs.The new findingslay some certain foundations for the research of dual-layered structure membrane material.