2D Janus membrane and derivative 3D dual-wall Janus shaped tube affording dual aeolotropic conduction, up/down conversion luminescence and superparamagnetism. (September 2020)

• Record Type: Journal Article
• Authors: Tian, Jiao; Ma, Qianli; Yu, Wensheng; Li, Dan; Dong, Xiangting; Liu, Guixia; Wang, Jinxian
• Is Part Of: Materials today communications. Volume 24(2020)
• Publication Date: 2020-09
• Subjects: Janus membrane -- 3D dual-wall Janus shaped tube -- Dual aeolotropic conduction -- Luminescence -- Superparamagnetism -- Parallel electrospinning; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2020.101235
• Languages: English
• ISSNs: 2352-4928

Abstract

Graphical abstract: Highlights: 2D up-to-down structured Janus nanobelts array membrane is designed and fabricated via electrospinning technique. Novel 2D Janus membrane possesses up-/down-conversion luminescence, dual aeolotropic conduction and magnetism. Macro-partition and micro-partition are realized in 2D Janus membrane to reduce adverse interactions among various materials. 3D Janus shaped tube is obtained by rolling 2D Janus membrane and exhibits the same multifunctionalities as the 2D membrane. Structural evolution from 1D Janus nanobelt to 2D Janus membrane then to 3D Janus shaped tube is successfully achieved. Abstract: New-typed two-dimensional (2D) bilayer Janus nanobelts array membrane (marked as BJNAM) is devised and constructed via sequential parallel electrospinning utilizing one-dimensional (1D) Janus nanobelt as conductive and building unit. BJNAM comprises up-to-down two-layer membranes closely connected to form Janus membrane. Owing to its exceptive structure, the BJNAM achieves multi-functionalities of dual aeolotropic conduction, dual-colored up-conversion and down-conversion fluorescence and superparamagnetism. The specific structure of BJNAM realizes macroscopic partition, Janus nanobelt used as building unit actualizes micro-partition, and high integration of micro-partition with macro-partition is synchronously realized in the novel 2D BJNAM, and partition structures assist to reduce adverse mutual influences among diverse functional materials by isolating and limiting them on their own areas on the macro and micro level to achieve excellent poly-functionalities. Furthermore, four kinds of three-dimensional (3D) dual-wall Janus shaped tubes are easily obtained by curling the 2D BJNAM through different plans and the 3D dual-wall Janus shaped tubes possess the same properties as the 2D BJNAM, implying that the structural evolution from microscopic 1D Janus nanobelt to macroscopic 2D dual aeolotropic conductive membrane then to macroscopic 3D Janus shaped tube is achieved. The newly-manufactured 2D and 3D materials have potentials in oil-water separation, biomedicine and flexible electronics.