Electronic, Optical, and Interfacial Properties of pi-Conjugated Materials

在这个由化学系实验物理化学计划资助的项目中，格鲁吉亚理工学院的Bredas教授将在四个方面进行研究：1）提供分子内和分子间自交换电子转移反应的描述; 2）分析能量传递过程，包括共振能量传递（单重态-激子跳跃）以及单重态-单重态、单重态-三重态和单重态-极化子湮灭; 3）评估光诱导的电子转移过程;和4）表征有机/有机异质结和简单的金属/共轭分子相互作用。 这些主题中的第一个涉及传输机制，并且是半导体聚合物和低聚物的所有应用中的关键过程，而第二个与有机发光二极管和激光器中的颜色调谐和损耗机制有关。第三个主题涉及光电探测器、太阳能电池以及光折变器件的操作。 最后，课题四的工作扩展了以前对金属/有机界面的研究。这项工作依赖于实验和理论之间的持续互动，通过与美国国内外专家的广泛合作。 学生和博士后将在多学科和多元文化的环境中参与研究。 拟议的研究将是一个很好的机制，以培养一个受过高等教育和积极的劳动力在先进材料领域。

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. Bredas of the Georgia Institute of Technology will conduct research in four areas: 1) to provide a description of intra- and intermolecular self-exchange electron-transfer reactions; 2) to analyze energy-transfer processes including resonant energy transfer (singlet-exciton hopping) as well as singlet-singlet, singlet-triplet, and singlet-polaron annihilations; 3) to evaluate photo-induced electron-transfer processes; and 4) to characterize organic/organic heterojunctions and simple metal/conjugated molecule interactions. The first of these topics relates to the transport mechanism and is a key process in all applications of semiconducting polymers and oligomers, while the second has to do with color tuning and loss mechanisms in organic light-emitting diodes and lasers. The third topic concerns the operation of photodetectors, solar cells, as well as photorefractive devices. Lastly, the work of topic four serves to expand previous studies on metal/organic interfaces.The work depends on a continuous interaction between experiment and theory, through extensive collaborations with experts within and outside the USA. Students and postdoctoral associates will participate in the research in a multidisciplinary and multicultural environment. The proposed research will be a good mechanism to train a highly educated and motivated workforce in the field of advanced materials.