Experimental Studies of the Dynamic Structure of Liquids

液体动态结构的实验研究

• 批准号: 9017649
• 负责人: Jiri Jonas
• 金额: $ 52.6万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-12-01 至 1996-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017649&HistoricalAwards=false
• 关键词: Experimental; Studies; Dynamic; Structure; Liquids

Professor Jiri Jonas is supported by a grant from the Theoretical and Computational Chemistry Program to study the dynamic structure of liquids using NMR spectroscopy and Rayleigh and Raman scattering. The primary importance of this research is in furthering our understanding of the effects which pressure, temperature and nature of the solvent have on chemical structure and reactivity. Jonas plans to use NMR spectroscopy and laser Rayleigh and Raman scattering techniques to study molecular motions, intermolecular interactions and reaction rates in various liquid systems. Properties such as self-diffusion coefficients, shear viscosities and densities will also be measured. The use of pressure as an experimental variable represents the important feature of the experiments to be conducted because this approach enables Jonas to separate the effects of density and temperature on dynamic processes in liquids. The main emphasis will be on the use of high resolution multinuclear FT NMR techniques at high pressures to study: 1) dynamical solvent effects on reaction rates; 2) dynamics of complex liquids; 3) applicability of hydrodynamic equations at the molecular level; and 4) chemical shift studies of hydrogen bonded liquids. Laser Raman scattering studies will concentrate on: 1) collision induced scattering in binary liquid mixtures; and 2) frequency non-coincidence effects in polar liquids.

吉里·乔纳斯教授得到了 理论和计算化学计划，研究 用核磁共振波谱法测定液体的动态结构， 瑞利和拉曼散射。 这一点的首要重要性 研究是为了进一步了解这些影响 溶剂的压力、温度和性质对 化学结构和反应性。 乔纳斯计划使用核磁共振光谱学和激光瑞利， 拉曼散射技术来研究分子运动， 分子间相互作用和反应速率在不同的 液体系统 自扩散等特性 系数，剪切粘度和密度也将是 测定了 使用压力作为实验变量 代表了实验的重要特征， 因为这种方法使乔纳斯能够将 密度和温度对动力学过程的影响 液体. 主要重点将放在使用高 高分辨多核FT NMR技术， 研究：1）动态溶剂对反应速率的影响; 2） 复杂流体动力学; 3）流体动力学的适用性 分子水平上的方程;和4）化学位移研究 氢键液体。 激光拉曼散射研究 将集中在：1）碰撞诱导散射在二进制 液体混合物;和2）频率非重合效应， 极性液体