Studies of Chemical Rate Processes by Means of Electrophoretic NMR and Laser Light Scattering

实验物理化学项目已经向查尔斯·约翰逊教授提供了一笔拨款。他对化学速率的研究工作涉及使用强大的电场、磁场和激光光场，以更好地了解分子在溶液中如何运动以及以什么速度运动。在自由溶液中对低离子强度的样品进行了高分辨电泳法核磁共振实验。这里遇到的实验条件(和问题)与在电泳光散射中发现的相似。初步工作表明，还有许多有趣的应用有待探索。它将成为研究水溶液和悬浮液的核磁共振的一个主要分支。本研究概述了电子核磁共振的一些初步应用。除了E核磁共振工作，约翰逊教授还将继续他在全息瑞利散射(HRS)方面的研究。具有高频相位调制的HRS光谱仪是瞬变光栅光谱仪器的一大进步。特别是，他们将探索在激光诱导温度模式中对大分子的Soret效应。

The Experimental Physical Chemistry Program has made a grant to Professor Charles Johnson. His research work on chemical rates involves the use of strong electric, magnetic and laser light fields to better understand how molecules move in solution and at what velocities. The high resolution electrophoretic nuclear magnetic resonance (ENMR) experiments have been carried out in free solution on samples with low ionic strengths. The experimental conditions (and problems) encountered here are similar to those found in electrophoretic light scattering. The preliminary work indicates a host of intriguing applications to be explored. It will become a major branch of NMR for the study of aqueous solutions and suspensions. This study outlines some initial applications of ENMR. In addition to the ENMR work, Professor Johnson will continue his studies in holographic Rayliegh scattering (HRS). The HRS spectrometer with high frequency phase modulation represents a major advance in instrumentation for transient grating spectroscopy. In particular, they will explore the Soret effect for macromolecules in laser induced temperature patterns.