Coherent and Incoherent Energy Transfer in Conjugated Molecules

该项目由化学系化学结构、动力学和机制计划资助，支持佛罗里达大学的瓦莱里娅·克莱曼研究共轭模型体系中的能量迁移，共轭模型体系是有机太阳能电池的首选材料。科学目标将通过将相敏瞬变技术与计算工具相结合来实现，以研究与核运动相关的激发态电子耦合。正在研究的材料将包括共轭大分子的构建块和具有可变带隙能量的化学修饰树枝结构，这些结构可用于太阳能转换。通过一项强有力的教育努力，预计将在社区中产生广泛的影响，旨在培养出受过高等教育的科学家，精通最先进的光谱学工具和关于光收集材料的理论计算。太阳能转换有可能提供足够的能量来为地球提供燃料，但它需要了解基本属性，才能创造出高效和经济的太阳能转换设备。这项建议通过关注最初的采光步骤来解决这些目标。

This project, funded by the Chemical Structure, Dynamics and Mechanisms Program of the Division of Chemistry, supports Valeria Kleiman from the University of Florida to investigate energy migration in conjugated model systems, the material of choice for organic solar cells. The scientific goals will be achieved through the combination of phase sensitive transient techniques with computational tools to investigate excited state electronic coupling in conjunction with nuclear motion. Materials under investigation will include building blocks for conjugated macromolecules and chemically modified dendritic structures with variable band gap energies which can be used for solar energy conversion. A broad impact in the community is expected through a strong educational effort intended to yield highly educated scientists, well versed on the latest tools of state of the art spectroscopy and theoretical calculations regarding light harvesting materials.Solar energy conversion has the potential to provide enough energy to fuel the planet, but it requires an understanding of the fundamental properties to be able to create efficient and economic solar energy conversion devices. This proposal addresses these goals by focusing on the initial light harvesting step.