Theme of Report：Construction of Multifunctional Micro/Nano Fibers and Their Applications

Reporter：Prof. Chen Su（Nanjing Tech University）

Date：14:00-16:00, Tuesday, March 28, 2023

Location：Conference Room, 2nd floor, Building 908, Dushu Lake Campus of Soochow University

Abstract of Report：

Microfluid spinning technology (MST) is an ideal microreactor platform for producing anisotropic ordered microfibers. Microfibers constructed using MST have attracted much attention due to their accurate and controllable shape, size and composition, efficient mass and heat transfer properties, and green reaction processes. Herein, we systematically introduce a series of microfluidic spinning technologies, including microfluidic electrospinning technology, microfluidic blow spinning technology. We have prepared a variety of one-dimensional ordered fluorescent microfibers (array, Janus, spindle-knots), two-dimensional ordered photonic crystal films, and three-dimensional ordered Janus beads using MST. Multifunctional ordered microfibers are constructed through combining MST and microfluid chips, and used in microreactors, fluorescence coding, optical sensing, and multi-signal analysis. We firstly focus on the controllable structure of ordered fiber materials by MST and then realize the application of ordered microfibers in microreactors, supercapacitors, wearable devices, food packaging, artificial skin and blood vessels, and biomedical materials, laying the foundation for multifunctional microfibers constructed by MST. Secondly, in order to achieve the wide applications of nanofiber membranes, we have conduct research on the application of large-area biodegradable nanofiber skin scaffolds based on microfluidic blow spinning. Furthermore, the method of droplet microfluidics was used for the first time to continuously prepare micro/meso porous carbon skeleton hybrid electrode materials. The carbon skeleton hybrid electrode have uniform and ordered structures through rapid reaction of constituent elements in the droplet confined space. In order to broaden the application of electrospun fibers, we develop a new method for constructing polymer fluorescent materials doped with all-inorganic halide perovskite nanocrystals (PNCs) using microfluidic electrospinning technology. A concept of fiber spinning chemistry (FSC) was proposed, which is the in-situ generation of PNCs in fibers in a confined space of micro-nano fibers.