固态高分子体系多尺度分子运动的核磁共振研究

摘要/Abstract

摘要：

固体核磁共振技术是研究固态高分子材料中结构和分子动力学的一种非常重要和有效的手段. 该技术的一个重要特点是可以通过合理的实验方法，实现对研究体系中从低频(Hz)到中频(kHz)乃至高频(MHz)范围内分子运动的观测. 因此，固体核磁共振技术非常适合研究高分子体系中各类不同尺度分子运动. 该文首先简要介绍核磁共振研究分子运动的基本原理和方法，以及固态高分子体系的结构和分子动力学特点，然后结合固态高分子体系中的一些例子对核磁共振在固态高分子多尺度分子运动方面的一些研究成果展开讨论.

关键词: 固体核磁共振(solid-state NMR), 多尺度分子运动, 固态高分子, 构象转换, 分子链扩散

Abstract:

Solid-state NMR is an important and powerful tool for studying the structure and molecular dynamics of solid polymer. There are many solid-state NMR methods that can be used to illustrate the details of molecular dynamics occuring in a wide frquency range from Hz to MHz. These methods have been commonly used to study of the multiscale molecular dynamics in polymer solids. In this article, the NMR principles for studying the molecular dynamics of different time scale were briefly reviewed, as well as the structure and multiscale molecular dynamics features in polymer solids. Several examples were presented to show how solid-state NMR methods can be used to investigate the multiscale molecular dynamics in polymer solids.

Key words: solid-state NMR, molecular dynamics, polymer solids, conformation transformation, chain diffusion

中图分类号:

O482.53

薛红娟, 姚叶锋. 固态高分子体系多尺度分子运动的核磁共振研究[J]. 波谱学杂志, 2012, 29(2): 143-162.

XUE Hong-Juan, YAO Yie-Feng. Investigation of Multiscale Molecular Dynamics in Polymer Solids: Sold-State NMR Approachs[J]. Chinese Journal of Magnetic Resonance, 2012, 29(2): 143-162.

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