基于共价键导向构建具有强界面相互作用的导电聚合物/量子点纳米复合电致变色材料

项目名称： 基于共价键导向构建具有强界面相互作用的导电聚合物/量子点纳米复合电致变色材料

项目编号： No.51503169

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 褚佳

作者单位： 西安科技大学

项目金额： 21万元

中文摘要： 如何提高电子传导（传导）与离子传输（传质）是电致变色器件的关键问题。在单一组分电致变色体系中，因传导和传质过程受到材料结构限制，难以同时实现高传导与高传质。本项目选择具有高电子迁移特性的量子点作为导电聚合物电致变色材料的客体，利用共价键导向复合法将量子点锚定在导电聚合物结构中，获得紧密而稳定的相界面，为电子传导提供高速通道，并利用量子点调控聚苯胺的聚集态结构来促进离子的传输，达到同时改善传导和传质过程，实现量子点与导电聚合物结构和性能的有效结合。从合成-结构-性能各个环节着手，探讨导电聚合物与量子点两相界面的电子传导过程与能级结构及光电性能间的关联关系。在此基础上,通过电致变色性能的测试，从理论上阐明量子点纳米结构和共价键导向复合法对导电聚合物电致变色性能的影响机制。本项目的研究为形貌和结构可控的导电聚合物基量子点纳米杂化材料的合成提供一些新的方法，促进该材料在光电和能源领域的应用。

中文关键词： 电致变色；聚苯胺；量子点；界面共价键

英文摘要： Enhanced electronic conduction (conduction) and ionic transportation(mass transfer) are key issues for electrochromic device, but the conduction and mass transfer processes of the pure conducting polymer or inorganic material are limited by its structure. In this project, we have demonstrated a covalent coupling method to prepare organic-inorganic composites by using conductive polymer as host matrix and quantum dots (QDs) as guest materials, in which QDs are anchored into the conductive polymers with high electron mobility. In this hybrid, the closely interface of the two phase provide direct pathways for electrons conduction. Moreover, the morphology of conductive polymer is regulated by the unique structure of QDs, which are convenient for the transformation of the ionic, thus improving the electrochormic performance of the device and achieving an effective integration of QDs with conductive polymer. Furthermore, we explore the causality between covalent interfaces and conduction and mass transfer processes. On the basis of electrochromicdetection, the electronic conduction process between two phases of composites willbe discussed to study the enhancement mechanism of QDs andinterfacial covalent bonding on the electrochromic properties of polyaniline. The implementation of this project will greatly promote the practical use of conductive polymer/QDs composites in optoelectronic and energy area.

英文关键词： Electrochromism;Polyaniline;Quantum Dots;Interfacial Covalent Bonding