Construction And Performances Of Double Anisotropic Electrically Conductive Janus-typed Membranes

In the past few years,anisotropic conductive films?ACFs?have been widely used in high-tech industry,and have become one of the popular research subjects in the field of materials science owing to their many advantages.Type I ACFs are conductive along the thickness of the films and insulative along the surfaces.The further developed type II ACFs have different conduction in two perpendicular directions along their surfaces.Research and development of new-typed anisotropic conductive films are of great significance to the development of nanoscience and nanotechnology,and therefore,have become an important and valuable subject of study.In this dissertation,based on type II ACFs,novel type III anisotropic conductive films?ACFs?,namely flexible Janus-typed membranes,were proposed,designed and fabricated for the first time.Double anisotropic electrically conductive flexible Janus-typed membranes?type III ACFs?of luminescence-electricity-magnetism multi-functionality have been fabricated via electrospinning.The membranes were assembled by Janus nanobelts,and the brand-new membrane has a left-to-right structure.These membranes include[Eu?BA?₃phen/polymethylmethacrylate?PMMA?]//[polyaniline?PANI?/PMMA]double anisotropic electricallyconductive-redfluorescenceflexibleJanus-typedmembrane,[Tb?BA?₃phen/PMMA]//[PANI/PMMA]double anisotropic electrically conductive-green fluorescenceflexibleJanus-typedmembrane,{[Eu?BA?₃phen/PMMA]//[PANI/PMMA]}//{[Tb?BA?₃phen/PMMA]//[PANI/PMMA]} double anisotropic electrically conductive-red and green dual-color fluorescence flexible Janus-typedmembrane,{[Eu?BA?₃phen/PMMA]//[PANI/PMMA]}//{[Fe₃O₄/PMMA]//[PANI/PMMA]}double anisotropic electrically conductive-red fluorescence and magnetism flexible Janus-typed membrane.The samples were systematically characterized by a series of measurement techniques.The results show that the membranes have obvious double anisotropic electrical conduction.The new-typed membranes have better electrically conductive anisotropy,fluorescent intensity and magnetism than the counterpart samples.Besides,by modulating the amounts of rare earth complex and conducting polyaniline?PANI?,Fe₃O₄ NPs,the characteristics and intensity of the fluorescence,electricity and magnetism in the membrane can be tuned.The new findings lay some certain foundations for the research of double anisotropic electrically conductive membrane material.