单一手性单壁碳纳米管分离及其电致变色效应研究

Due to the different kinds of single-walled carbon nanotubes (SWCNTs) with different energy level structure and the spin-orbit coupling properties, SWCNTs shows the diversity of geometry and electronic structure. But how to obtain multiple categories，high purity, macro amounts of a single-chirality SWCNTs still faces great challenge. This project will focus on the theme of the chiral SWCNTs electrochromic effect in near infrared region, selectively disperse SWCNTs via designing different kinds of organic conjugated polymers as noncovalent modification dispersants , focus on chiral SWCNTs separation effect and mechanism through changing molecular structure and space configuration of conjugated polymers, clear the corresponding relation between polymer structures and SWCNTs chirality, implement precision, high purity，macro separation of different kinds of single-chirality SWCNTs, explore the preparation method of high density, high orientation, high conductive chiral SWCNTs film, and then study electrochromic performance of chiral SWCNTs film in near infrared region, lay the foundation for the development of optional band, short response time and long cycle of single-chiral SWCNTs electrochromic devices, provide a new strategy and method for the application of SWCNTs photoelectric devices.

由于不同种类的单壁碳纳米管具有不同的能级结构和自旋-轨道耦合性质，单壁碳纳米管显示出几何结构与电子结构的多样性。但是如何获得多种类、高纯度、宏量的单一手性单壁碳纳米管仍面临巨大的挑战。本项目将紧密围绕手性单壁碳纳米管的近红外区域电致变色效应这一主题，通过设计不同种类有机共轭聚合物作为非共价修饰分散剂选择性分散单壁碳纳米管，重点研究共轭聚合物的分子结构与空间构型对单壁碳纳米管手性分离效果的影响和作用机理，明晰聚合物结构与单壁碳纳米管手性之间的对应关系，实现不同种类单一手性单壁碳纳米管的精准、高纯度与宏量分离，探索获得高密度、高取向、高导电的手性单壁碳纳米管薄膜制备方法，进而研究手性单壁碳纳米管薄膜的近红外区域电致变色特性，为波段可选择、开发响应时间短、循环寿命长的单一手性单壁碳纳米管电致变色器件奠定基础，为单壁碳纳米管的光电器件应用提供新策略及新方法。