两亲性聚噻吩嵌段共聚物的合成、微相分离和光伏性能研究

项目名称： 两亲性聚噻吩嵌段共聚物的合成、微相分离和光伏性能研究

项目编号： No.21274029

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 彭娟

作者单位： 复旦大学

项目金额： 80万元

中文摘要： 本项目围绕含有聚噻吩链段的嵌段共聚物的化学结构-微相分离结构-光伏性能这一主线，设计合成一系列具有两亲性的聚噻吩嵌段共聚物，包括全共轭的刚性-刚性和刚性-柔性聚噻吩嵌段共聚物。通过考察主侧链结构、溶剂对不同嵌段的选择性、离子强度、过孔方式、结晶程度、热退火及溶剂处理等主要因素对其相结构的影响，构建各种相形态及掌握其主要调控规律。在此基础上研究它们的光伏性能，通过制备聚合物薄膜太阳能电池器件，探索聚合物相结构与电池性能之间的关系及相结构影响光伏性能的本质规律，从而进一步探索提高器件性能的有效途径。本项目的研究意义不仅在于通过调控聚噻吩嵌段共聚物的微相分离结构来优化和提升其光伏性能，更重要的是期望建立聚噻吩分子结构、微相分离结构及最终器件性能三者之间的关联，为设计和制备新型共轭高分子材料和器件提供一些理论指导和实验依据。

中文关键词： 聚噻吩；嵌段共聚物；两亲性；凝聚态；光伏性能

英文摘要： This project focuses on the construction of a series of amphiphilic polythiophene-based rod-rod and rod-coil block copolymers and the exploration of the relationship among the polythiophene chemical structures, microphase-separated structures and photovoltaic properties. The influence of chemical structures of the main/side chain, solvent selectivity, ionic strength, translocation via nanopores, crystalline degree, thermal and solvent annealing, etc., on their phase structures will be fully investigated. Moreover, the photovoltaic properties of the resulted block copolymers with various structures will be systematically studied in order to optimize the performance of the polymer solar cell. The significance of this project is not only to improve the photovoltaic properties of polythiophene-based block copolymers via controlling their phase structures, but also to build up the relationship among their chemical structure, phase structures and device performance. Consequently, this project will provide some guidance for the design of novel conjugated polymeric materials and device in the future.

英文关键词： Polythiophene；block copolymer；amphiphilic property；condensed structure；photovoltaic property