Research Initiation: Macromolecular Diffusion Processes andMolecular Dynamics: A Photophysical Study

研究启动：大分子扩散过程和分子动力学：光物理研究

• 批准号: 8505299
• 负责人: John Torkelson
• 金额: $ 7万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-04-15 至 1987-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8505299&HistoricalAwards=false
• 关键词: Research; Initiation; Macromolecular; Diffusion; Processes

Diffusion-controlled interactions between small molecules, between polymers, and between small molecules and polymers are studied by a combination of fluorescence and phosphorescence quenching experiments and excimer fluorescence. These studies will yield information related to polymerization kinetic parameters and, in particular, will allow for an investigation of how various polymer solution variables such as molecular weight, concentration, and polymer-solvent compatibility control the onset of the 'gel' effect. Furthermore, these studies lead to a greater fundamental understanding at a molecular level of polymer diffusion processes, Rouse dynamics and dynamics of entangled polymers, and the structure of polymer solutions. Photophysical studies such as fluorescence quenching are key to the success of this research.

小分子之间的扩散控制相互作用， 聚合物，以及小分子和聚合物之间的研究， 荧光和磷光猝灭实验的组合 和受激准分子荧光。 这些研究将提供有关信息 聚合动力学参数，特别是，将允许 研究了各种聚合物溶液变量， 分子量、浓度和聚合物-溶剂相容性 控制“凝胶”效应的发生。此外，这些研究导致 在分子水平上对聚合物有了更深入的了解 扩散过程，劳斯动力学和缠结聚合物动力学， 和聚合物溶液的结构。 光物理研究，如 荧光猝灭是这项研究成功的关键。