基于光致变色机制的可重复擦写纳米纤维膜的构筑及性能调控

In this project the photochromic materials of inorganic parts such as WO3, MoO3 and heteropolyacids compounds, and organic parts such as dithienylethene and azobenzene compounds would be applied as the main research objects to prepare rewritable photochromic inorganic/organic hybrid electrospinning nanofiber membranes. This project focus on the hybrid materials, the technology to prepare solutions with suitable spinnability and the technology about electrospinning to fabricate novel photochromic fibrous membranes. During the construction of photochromic fibrous membranes, the effects of this technological parameters on the microstructure of the nanofiber membranes and the mechanism of photochromic behaviors will be probed. The constitute and structure of the hybrid materials and the relationship between electrospinning technological parameters and the mechanical properties of membranes as well as the multi-functional performances will also be characterized. Fabrication of multi-color nanofiber membranes and control method and technique about photochromism should be investigated as well as the properties and mechanism of the rewritable characteristics. Function-structure relationship and relative theories about the nanofiber membranes would be elaborated. This studies aims to obtain various self-standing hybrid photochromic membranes with high strength, rapid response to light and good fatigue resistance, which is not only significant for enriching and perfecting the theories about photochromism but also for discovering and selecting new photochromic materials with application prospects.

本项目选择具有可擦写光致变色性能的无机/有机杂化材料的静电纺纳米纤维膜为研究对象，其中主要以WO3、MoO3和杂多酸类化合物等作为无机组份，二芳基乙烯型高分子和偶氮苯类化合物等作为有机组份，重点探讨杂化材料及其可纺性溶胶/溶液的制备工艺，静电纺丝技术构筑新型光致变色纤维膜的过程与工艺；考察静电纺工艺参数对纤维膜微观结构、光致变色性能及机制的影响，以及杂化材料的组成和结构、静电纺工艺参数与纤维膜的力学性能、光致变色等多功能特性的关系；研究能够显示多重色彩的纳米纤维膜的构筑及其光致变色特性的调控方法和技术、膜的可擦写性与机制；阐释静电纺纤维膜的构效关系及其所涉及的相关理论。本研究的目的是制备多种强度高(柔韧性好)、可重复擦写利用、光响应快速、耐疲劳性好的自支撑光致变色纳米纤维膜，这对丰富和完善光致变色理论，发现和遴选应用前景好的光致变色新材料有重要意义。

本项目选择具有可擦写光致变色性能的无机/有机杂化材料的静电纺纳米纤维膜为研究对象，其中主要以WO3和杂多酸类化合物等作为无机组份，二芳基乙烯型高分子和偶氮苯类化合物等作为有机组份，重点探讨了杂化材料及其可纺性溶胶/溶液的制备工艺，静电纺丝技术构筑新型光致变色纤维膜的过程与工艺；考察了静电纺工艺参数对纤维膜微观结构、光致变色性能及机制的影响，以及杂化材料的组成和结构、静电纺工艺参数与纤维膜的力学性能、光致变色等多功能特性的关系；研究了能够显示多重色彩的纳米纤维膜的构筑及其光致变色特性的调控方法和技术、膜的可擦写性与机制；阐释了静电纺纤维膜的构效关系及其所涉及的相关理论，对丰富和完善光致变色理论，发现和遴选应用前景好的光致变色新材料有重要意义。