南京大学李剑团队报道了MicroED作为一种强大的复杂多孔材料结构测定技术。相关研究成果发表在2023年12月22日出版的《结构化学》。

近年来，多孔材料引起了人们的极大关注。了解它们的结构和性质之间的内在关系需要对它们的原子结构有精确的了解。传统上，单晶X射线衍射是阐明这种结构的主要方法，但它需要大的、高质量的晶体，通常尺寸超过5μm。这些晶体的生长可能是一个耗时的过程，尤其是对于一维和二维材料。为了探索纳米级的结构，MicroED（微晶电子衍射）为纳米材料领域提供了前所未有的见解。这项革命性的技术使研究人员能够揭示纳米结构中复杂的细节，有望重塑人们对材料的基本理解。

该篇综述中，研究人员深入研究了MicroED在各种多孔材料研究中的应用，包括沸石、金属有机框架（MOFs）和共价有机框架（COFs）。研究人员强调MicroED在纳米材料表征中的关键作用，从而实现精确的晶体分析和相位识别。

附：英文原文

Title: MicroED as a powerful technique for the structure determination of complex porous materials

Author: anonymous

Issue&Volume: 2023-12-22

Abstract: Porous materials have garnered significant attention in recent years. Understanding the intrinsic relationship between their structures and properties requires precise knowledge of their atomic structures. Single-crystal X-ray diffraction has traditionally been the primary method for elucidating such structures, but it demands large, high-quality crystals, often exceeding 5 μm in size. The growth of these crystals can be a time-consuming process, especially for one-dimensional and two-dimensional materials. To explore structures at the nanoscale, MicroED (microcrystal electron diffraction) offers unprecedented insights into the realm of nanomaterials. This revolutionary technique enables researchers to uncover intricate details within nanoscale structures, promising to reshape our fundamental understanding of materials. In this review, we delve into the applications of MicroED in the study of various porous materials, including zeolites, metal-organic frameworks (MOFs), and covalent organic frameworks (COFs). We emphasize the pivotal role of MicroED in nanomaterial characterization, enabling precise crystallographic analysis and phase identification.

DOI: 10.1016/j.cjsc.2023.100209

Source: http://cjsc.ac.cn/cms/issues/548