利用电子衍射解析晶体结构的研究进展

Research progress on the crystal structure determination using electron diffraction

电子衍射技术是解析晶体结构的基本手段之一,随着透射电子显微镜硬件设施的不断改善以及结构解析方法的发展,电子衍射在探究材料构效关系领域发挥着越来越重要的作用.本文主要介绍了本课题组在利用电子衍射解析结构方面的工作,以及国内外关于电子衍射技术发展的最新进展和展望.本课题组利用选区电子衍射及三维电子衍射技术,结合粉末X射线衍射、单晶X射线衍射、高分辨电子显微镜等表征手段,解析了许多复杂的晶体结构,包括无机功能材料、分子筛、共价有机框架材料等.

Electron diffraction is one of the basic techniques to study crystal structures. With the improvement of the transmission electron microscope hardware facilities and the development of structural analysis methods, electron diffraction plays an increasingly important role in exploring the relationship between the material structures and their physical properties. In this review, the progress of crystal structure determination using electron diffraction was mainly discussed. Our group has analyzed many complex crystal structures including inorganic functional materials, zeolites and covalent organic framework materials, utilizing selected area electron diffraction and three-dimensional electron diffraction technology combined with powder X-ray diffraction, single crystal X-ray diffraction, high-resolution electron microscopy and other characterization methods.