U.S.-Japan Cooperative Research: Photoinduced Charge Generation in Polymers

该奖项支持为期两年的合作研究项目 理查德·D教授内华达大学的伯克哈特， 里诺和京都大学的山本正秀教授。 本研究项目的目标是评估 三重态-三重态湮灭作为一种可行的电荷机制 乙烯基芳族聚合物中的载流子生成以及小的 分子作为分子掺杂剂存在于惰性聚合物基质中。 聚合物和小分子类似物将在 Yamamoto教授的小组，虽然瞬态吸收光谱 激光激发的溶液和固体薄膜的聚合物将是 伯克哈特教授的小组进行了一项研究， 任何观察到的瞬变，特别是寻找瞬变离子。 这些实验将在一定温度范围内进行 从10 K到室温。 为了评估瞬变的衰减率， 物种，纳秒动力学测量将在 京都大学。 当离子和三重态衰变信号都可以 同时观察，将有可能确定 是否存在一种关系， 瞬态离子和三重态-三重态湮灭的发生。

This award supports a two-year collaborative research project between Professor Richard D. Burkhart of the University of Nevado, Reno and Professor Masahide Yamamoto of the University of Kyoto. The goal of this research project is to evaluate the role of triplet-triplet annihilations as a viable mechanism of charge carrier generation in vinylaromatic polymers as well as small molecules present as molecular dopants in inert polymer matrices. The polymers and small molecule analogues will be synthesized in Professor Yamamoto's group, while transient absorption spectroscopy on laser excited solutions and solid films of the polymers will be carried out by Professor Burkhart's group to determine the identity of any transients observed, looking especially for transient ions. These experiments will be carried out over a range of temperatures from 10K to ambient. To evaluate rates of decay of the transient species, nanosecond kinetic measurements will be carried out at the University of Kyoto. When both ion and triplet decay signals can be observed simultaneously, it will be possible to determine whether or not a relationship exists between the formation of transient ions and the occurrence of triplet-triplet annihilations.