New Techniques for Studies of Nuclear Spin Relaxation and Molecular Dynamics in Solids

Regitze教授和Robert Vold教授获得了 实验物理化学项目的研究 使用非常大的磁场来研究 固体和“有序”液体。这项工作将使我们能够更好地 理解结构的基本原理， 凝聚态动力学 该项目侧重于当前感兴趣的几个主题，例如。 对通道笼形物中烷基链的运动机理进行了研究， 层状插层化合物和烷基化簇; 特定的相互作用，如氢键作用， 分子晶体中的内旋转;以及分子 液晶中的重定向我们会利用 最近开发的技术， 运动的谱密度从实验中获得， 从分子动力学计算得到的那些。特别 将利用一种新的磁共振技术 由Volds开发的所谓频率步进， 大大减少了通常的谱线展宽问题 核自旋平均值大于1的同位素 半

Professors Regitze and Robert Vold have been awarded a grant from the Experimental Physical Chemistry Program for research using very large magnetic fields to study the structure of solids and "ordered" liquids. This work will allow us to better understand the underlying principles of the structure and dynamics of condensed matter. This project focuses on several topics of current interest e.g. the mechanism of alkyl chain motion in channel clathrates,in layered intercalation compounds and alkylated clusters; the effects of specific interactions such as hydrogen bonding on internal rotations in molecular crystals; and the molecular reorientation in liquid crystals. Advantage will be taken of recently developed techniques for comparing the individual spectral densities of motion obtained from experiments with those obtained from molecular dynamics calculations. Particular advantage will be taken of a new magnetic resonance technique developed by the Volds called frequency stepping in order to greatly reduce the usual line broadening problems associated with isotopes whose nuclear spin average is greater than one half.