Ultrafast Dynamics in Complex Systems: Connecting the Molecular Architecture with the Functional Properties of Nanoscale Materials

复杂系统中的超快动力学：将分子结构与纳米材料的功能特性联系起来

• 批准号: 0301266
• 负责人: John Papanikolas
• 金额: $ 36.6万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0301266&HistoricalAwards=false
• 关键词: Ultrafast; Dynamics; Complex; Systems; Connecting

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Prof. John M. Papanikolas of the University of North Carolina at Chapel Hill will investigate the connection between the molecular architecture of a material and its functional properties, emphasizing systems that harvest energy from light and transfer that energy to other materials. The project targets hierarchical structures that exhibit increasing structural and functional complexity, namely monomer structures that are attached to polymer chains to form functional substructures, which in turn are combined to form larger nanosystems. The focus is on monomers that are Ru(II) and Os(II) polypyridil complexes. Ultrafast spectroscopy and computer simulation will be used to study excited state energy transport and charge carrier conduction. The goal is to identify the photophysical factors that dictate performance in processes such as solar energy conversion, LED devices, and optical limiters.This project will contribute to our understanding of complex systems while promoting teaching, training, and learning in the context of a research program. Graduate and undergraduate students will participate in this research. They will acquire technical knowledge and skills, while at the same time experience the planning and successful execution of experiments, as well as becoming attuned to the larger context within which the work is carried out. As part of an outreach program Prof. Papanikolas will develop science workshops for elementary school students and include undergraduate students interested in science education in the development of these workshops.

在这个由化学系实验物理化学项目资助的项目中，北卡罗来纳大学教堂山分校的 John M. Papanikolas 教授将研究材料的分子结构与其功能特性之间的联系，强调从光中收集能量并将该能量转移到其他材料的系统。 该项目的目标是表现出结构和功能复杂性不断增加的分层结构，即连接到聚合物链上形成功能子结构的单体结构，这些子结构又组合起来形成更大的纳米系统。 重点是 Ru(II) 和 Os(II) 聚吡啶配合物单体。 超快光谱和计算机模拟将用于研究激发态能量传输和载流子传导。 目标是确定决定太阳能转换、LED 器件和光学限制器等过程性能的光物理因素。该项目将有助于我们对复杂系统的理解，同时促进研究项目背景下的教学、培训和学习。 研究生和本科生将参与这项研究。 他们将获得技术知识和技能，同时体验实验的规划和成功执行，并适应工作开展的更大背景。 作为推广计划的一部分，帕帕尼科拉斯教授将为小学生举办科学研讨会，并将包括对科学教育感兴趣的本科生参与这些研讨会的发展。