Single Molecule Spectroscopic Investigations of the Structure and Dynamics of Complex Functional Organic Thin-Film Materials

德克萨斯大学奥斯汀分校的Paul Barbara教授在理论和计算化学项目的支持下，研究有机聚合物薄膜的单分子光谱，包括聚苯乙烯-乙烯聚合物，一种荧光共轭聚合物。其他要研究的系统包括光驱动聚合物马达和模型单分子光子器件。聚合物构象、构象弛豫、光物理和链-链相互作用是其中的一些问题。制备超纯导电聚合物，并研究其在带电情况下的光物理性质，如LED器件。PI计划尝试对这些单分子进行飞秒时间分辨测量。所研究的材料在电光、光电和光伏应用中具有重要意义。

Professor Paul Barbara of the University of Texas at Austin is supported by the Theoretical and Computational Chemistry Program to study single molecule spectroscopy of organic polymer films, including poly-phenylene-vinylene polymer, a fluorescent conjugated polymer. Among the other systems to be examined are photo-driven polymeric motors and model single-molecule photonic devices. Polymer conformation, conformational relaxation, photophysics and chain-chain interactions are some of the issues. Ultrapure conducting polymers are to be prepared and their photophysics studied in the presence of charges, as in a LED device. The PI proposes to attempt femtosecond time-resolved measurements on these single molecules.The materials to be studied are important in electro-optic, opto-electronic and photovoltaic applications.