Electrospinning assembly of 1D peculiar Janus nanofiber into 2D anisotropic electrically conductive array membrane synch
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Electrospinning assembly of 1D peculiar Janus nanofiber into 2D anisotropic electrically conductive array membrane synchronously endued with tuned superparamagnetism and color-tunable luminescence Xue Xi1 · Qianli Ma1 · Xiangting Dong1 · Dan Li1 · Wensheng Yu1 · Jinxian Wang1 · Guixia Liu1 Received: 7 February 2018 / Accepted: 10 April 2018 © Springer Science+Business Media, LLC, part of Springer Nature 2018
Abstract Brand-new coaxial nanocable//nanofiber typed Janus nanofibers array membrane with tuned anisotropically electrical conduction, superparamagnetism and color-tunable luminescence has been prepared via electrospinning technology using a homemade coaxis//monoaxis spinneret and rotary drum as collector for the first time. As constitutional and electrically conductive unit for fabricating the array membrane, each one-dimensional (1D) peculiar Janus nanofiber consists of a half side of [ Fe3O4/ PVP]@[Tb(BA)3phen/Eu(BA)3phen/polyvinyl pyrrolidone (PVP)] with luminescent-superparamagnetic bifunctionality and the other half side of polyaniline (PANI)/PVP possessing electrically conductive functionality, and all of Janus nanofibers are aligned along with the same direction to form two-dimensional (2D) array membrane. The electrical conductivities along with the length direction and diameter direction (two perpendicular directions) of the Janus nanofibers in the array membrane are respectively high and low, leading to the electrically conductive anisotropy of the array membrane. Because [Fe3O4/PVP]@[Tb(BA)3phen/Eu(BA)3phen/PVP] as insulative units are used and inserted into the insulative direction of the array membranes to further block the movement of electrons, the largest conductivity ratio between length and diameter direction of the nanofibers for the array membrane reaches up to six orders of magnitude which is the highest conductivity ratio between the two perpendicular directions for nanofibrous membrane. Furthermore, the electrically conductive anisotropy of Janus nanofibers array membrane can be tunable by adjusting the amount of PANI. Besides, the Janus nanofibers array membrane is simultaneously endued with excellent and tunable superparamagnetism and photoluminescence. More importantly, the design idea and manufacture technique for the novel Janus nanofibers array membrane afford a facile approach for the fabrication of multifunctional nanomaterials-formed membranes.
1 Introduction Anisotropically conductive films (denoted as ACFs for short) are novel interconnected materials for electronic components, which are electrically conductive along with single direction and insulative in other directions. ACFs have been extensively applied in the fields of electronic packaging, microchip fixation, electrode connection, and * Xiangting Dong [email protected] * Wensheng Yu [email protected] 1
Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, China
etc. ACFs can be classified as typ
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