Novel PAN/PVP Janus ultrafine fiber membrane and its application for biphasic drug release

Abstract

Materials with Janus structures have attracted significant attention in recent years.

Electrospinning Janus Type CoOx/C Nanofibers as Electrocatalysts for Oxygen Reduction Reaction

“…Figure 2c showed the magnification of individual as-spun Janus nanofiber, which consisted of two semicylinder and a clear dividing boundary along the nanofiber axial direction on the nanofiber surface, because the two electrospinning precursor solutions had a matched viscosity. In our previous study and other findings indicated side-byside electrospinning can form Janus nanofibers when the following conditions were satisfied (1) the two electrospinning precursors had a similar viscosity [3], and (2) the time of nanofibers formation was faster than mixing between miscible electrospinning precursor solutions [21]. After carbonation, the as-spun Janus nanofibers were converted to CoO x /C Janus nanofibers, which embedded CoO x nanoparticles with a decrease in diameter to 300 ± 50 nm showed in Fig.…”

“…Nanofibers have a high specific surface area and their structure is controllable. Different unique structures can be prepared through the design of the needle and the choice of spinning solution, such as core-shell structure [1], hollow structure [2], Janus structure [3], porous structure [4], and necklace-like structure [5]. These unique structures can be used to prepare nanofibers with multiple functions.…”

2D double aeolotropic conductive Janus pellicle with multi-functionality then derived 3D dual-wall Janus-type tube

“…The Janus pellicle is a novel pellicle with asymmetric properties on each part [1]. As one of the pellicle materials, Janus pellicles [2][3][4][5][6] have been widely used in electrical engineering and biology due to their special structural characteristics. For example, a PVFM-based Janus pellicle is used for a highly durable Li-O 2 battery [7], a bionic Janus composite pellicle is used for a smart response actuator [8], and a hydrophobic-hydrophilic Janus pellicle is used for the mist collector [9].…”

A neoteric sandwich-configurational composite film offering synchronous conductive aeolotropy, superparamagnetism and dual-color fluorescence

“…Therefore, more and more researchers focus their attention on multifunctional composite materials. [9][10][11][12][13] In recent years, magnetic-uorescence bifunctional nanomaterials have been widely used in drug delivery and biomolecular detection. 14 For example, magnetic-uorescence bifunctional nanomaterials have important applications in the eld of drug delivery, because loaded drugs can be transferred to specic location via magnetic navigation.…”