Far Infrared Studies of Molecular Interactions

分子相互作用的远红外研究

• 批准号: 9213635
• 负责人: Kenneth Leopold
• 金额: $ 29.08万
• 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: 1992
• 资助国家: 美国
• 起止时间: 1992-06-15 至 1997-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9213635&HistoricalAwards=false
• 关键词: Far; Infrared; Studies; Molecular; Interactions

In this project in the Experimental Physical Chemistry Program Dr. Kenneth R. Leopold will use tunable, high-resolution tunable far infrared spectroscopy to study 1) potential energy surfaces and internal dynamics of weakly-bound complexes and 2) the dynamics of intramolecular proton transfer reactions. Work in the first area will focus on systems with multiple secondary potential minima and large amplitude vibrations. These are important as models for more general chemical complexes which exhibit competitive binding sites. In the second area intramolecular proton transfer dynamics will be investigated for the internally hydrogen bonded molecule molecule malonaldehyde. In particular, the tunneling splittings produced by the proton motion will be examined in the presence of a quantum of vibrational excitation in several of the skeletal vibrational modes of the molecule. %%% Hydrogen bonding and other weak intermolecular interactions are important because they can steer the course of many chemical reactions of vital technological and biological importance. It is therefore important to understand these interactions at a fundamental level. Dr. Leopold will add to this understanding by probing the strength and nature of intermoecular interactions using a special, high resolution infrared spectrometer constructed in his laboratory.

在这个实验物理化学项目中， Kenneth R.博士利奥波德将使用可调的高分辨率 可调谐远红外光谱研究1）势能 弱结合复合物的表面和内部动力学， 2)分子内质子转移反应的动力学。 第一个领域的工作将侧重于具有多个 二次电位极小值和大振幅振动。 这些是重要的模型，更一般的化学 显示竞争性结合位点的复合物。 在 第二个领域的分子内质子转移动力学将是 研究了内部氢键分子 分子丙二醛。 特别是隧道 质子运动产生的分裂将在 几种振动激发量子的存在 分子的骨架振动模式。 %%% 氢键和其他弱的分子间相互作用是 重要的是，它们可以引导许多化学物质的过程， 具有重要的技术和生物学意义。它 因此，重要的是要了解这些相互作用， 基本水平。利奥波德博士将补充这一理解 通过探测分子间的强度和性质， 利用一种特殊的高分辨率红外 在他的实验室里建造的光谱仪。