半導体高分子配向制御による有機太陽電池の発電機構の解明

今年的目标是控制薄膜中半导体聚合物的取向，并了解其对相关薄膜物理性质和有机电子器件性能的影响。两种策略，即（1）使用表面分离的单分子层和（2）侧基的修饰植醇衍生的烷基链被利用。在第一子课题中，通过氟烷基修饰的手性聚噻吩的自组装实现了薄膜中分子取向和手性的同时控制;在第二子课题中，将植醇衍生物作为一类新型的烷基链用于半导体聚合物，通过控制链取向实现了溶解性和薄膜结晶性之间的平衡，上述研究的两篇学术论文正在准备中。

In this year, the objective is to control the orientation of semiconducting polymers in thin films, and understand its influence on the relevant thin film physical properties and the performance of organic electronic devices. Two strategies, namely (1) the use of surface-segregated monolayer and (2) the modification of side groups by phytol-derived alkyl chains were utilized. In the first subtopic, simultaneous control of molecular orientation and chirality in thin films was fulfilled by self-assembly of fluoroalkyl modified chiral polythiophene.In the second subtopic, phytol derivative was utilized as a new class of alkyl chain for semiconducting polymers to realize the balance between solubility and film crystallinity with controlled chain orientation, thus improved device performance.Two academic papers of the aforementioned studies are now in preparation.