Dynamics of Polar Solvation and Electron Transfer in Restricted Environments

受限环境中极性溶剂化和电子转移的动力学

• 批准号: 0075266
• 负责人: Nancy Levinger
• 金额: $ 36万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0075266&HistoricalAwards=false
• 关键词: Dynamics; Polar; Solvation; Electron; Transfer

Professor Nancy Levinger of Colorado State University is funded by the Experimental Physical Chemistry program to perform experimental studies on solvation dynamics in micelles. Solvent molecules inside reverse micelle systems are perturbed by interfacial interactions with the walls of the micelle, and this is a model system for the more complicated environments such as those found in cells and in geological structures. In this proposal the PI seeks to continue her previous work on these systems using a variety of advanced ultrafast time-resolved methods such as Stokes shift and photon echoes. Representative micellar systems include ones with varying head groups. Ultrafast electron transfer processes are also to be probed. The overall goal is to develop a comprehensive understanding of the way in which restricted environments inside reverse micelles influence dynamical behavior of the solvent and to understand how this influences chemical reactions. The results will aid scientists studying reactions and processes in biological and geochemical microenvironments such as soils, rocks and biological cells and organelles where the effect of the solvent is poorly understood.

科罗拉多州立大学的Nancy Levinger教授由实验物理化学计划资助，对胶束中的溶剂化动力学进行实验研究。 反胶束系统中的溶剂分子通过与胶束壁的界面相互作用而受到扰动，这是更复杂环境的模型系统，例如在细胞和地质结构中发现的环境。 在这项提案中，PI试图继续她以前在这些系统上的工作，使用各种先进的超快时间分辨方法，如斯托克斯位移和光子回波。 代表性的胶束系统包括具有不同头部基团的胶束系统。 超快电子转移过程也将被探测。 总体目标是全面了解反胶束内的受限环境影响溶剂动力学行为的方式，并了解这如何影响化学反应。 这些结果将有助于科学家研究生物和地球化学微环境中的反应和过程，如土壤，岩石和生物细胞和细胞器，其中溶剂的影响知之甚少。