Directly probing changes in the local molecular envrionment during solution phase chemical dynamics

直接探测溶液相化学动力学过程中局部分子环境的变化

• 批准号: 0650013
• 负责人: David Blank
• 金额: --
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0650013&HistoricalAwards=false
• 关键词: Directly; probing; changes; local; molecular

In this award, funded by the Experimental Physical Chemistry Program of the Division of Chemistry, Professor David Blank of the University of Minnesota Twin Cities, his post-doctoral fellows, graduate, and undergraduate students will be supported to study dynamic solvent participation in chemical reactions. The proposed work will expand prior investigations of chemical dynamics to hydrogen bonding and nonpolar solvent environments to include new proton transfer and intermolecular electron transfer systems. Implementation of a technique known as Resonant Pump Third-Order Raman Probe Spectroscopy (RaPTORS) will allow direct probing of the solvent dynamics in a series of solvation and charge transfer studies. The solvent response to hydrogen bonding will be explored with the use of alkanols, formamides, and water as the solvent with coumarin dyes as solutes. Other proposed solvents to study include chloroform, benzene, and cylcohexanes with a variety of solutes. Proposed collaboration with computational chemists in the research group of Prof. Todd Martinez at University of Illinois will add valuable theoretical insight to this work.A significant proportion of chemistry, from industrial reactions the chemistry of biology, takes place in the solution phase. This project will contribute to the development of models for chemistry in solution that are more accurate and tractable. Professor Blank and the researchers involved in the program will benefit from valuable collaborations with Bethel College and the University of Illinois Urbana Champaign, to further strengthen and enrich the research experience.

该奖项由化学系实验物理化学项目资助，将支持明尼苏达大学双城分校的 David Blank 教授及其博士后、研究生和本科生研究化学反应中的动态溶剂参与。 拟议的工作将把化学动力学的先前研究扩展到氢键和非极性溶剂环境，以包括新的质子转移和分子间电子转移系统。 共振泵三阶拉曼探针光谱 (RaPTORS) 技术的实施将允许在一系列溶剂化和电荷转移研究中直接探测溶剂动力学。 将使用烷醇、甲酰胺和水作为溶剂，香豆素染料作为溶质来探索对氢键的溶剂响应。 其他建议研究的溶剂包括氯仿、苯和环己烷以及各种溶质。 与伊利诺伊大学托德·马丁内斯教授研究小组的计算化学家的合作将为这项工作增添宝贵的理论见解。从工业反应到生物学化学，化学的很大一部分发生在溶液相中。 该项目将有助于开发更准确、更易于处理的溶液化学模型。 布兰克教授和参与该项目的研究人员将受益于与伯特利学院和伊利诺伊大学香槟分校的宝贵合作，进一步加强和丰富研究经验。