This Angew has identified a new type of MOF structure!

MOF can connect inorganic structural units and organic linkers to show application prospects in a wide range of fields. However, a large number of MOF synthesis processes generate polycrystalline powders composed of multiple crystal phases, so it is difficult to pass single crystal X-ray diffraction methods. Characterize the structure. Therefore, the development of novel structure characterization technology is of great significance to accelerate the development of materials.

In view of this, Huang Zhehao of Stockholm University, Zheng Haoquan of Shaanxi Normal University, etc. reported a high-throughput method to analyze the structure of nano-sized MOF materials through the three-dimensional electron diffraction 3DED method. For the first time, a small amount of miscellaneous items were analyzed in ZIF-CO3-1. A new type of ZIF structure (ZIF-EC1) was identified.



Highlights of this article

Key points 1. ZIF-EC1 exhibits a dense 3D framework structure. Its structure is constructed by mononuclear/binuclear Zn clusters and 2-methylimidazole mIm- connected to form a composition structure of Zn3(mIm)5(OH), showing a relatively High N and Zn content.
Point 2. Further, the author found that the material has a high prospect in the electrocatalytic ORR reaction, and has shown the prospect in the development of new materials and the application of MOF.



Meng Ge, Yanzhi Wang, Francesco Carraro, Weibin Liang, Morteza Roostaeinia, Samira Siahrostami, Davide M. Proserpio, Christian Doonan, Paolo Falcaro, Haoquan Zheng, Xiaodong Zou, Zhehao Huang, High-Throughput Electron Diffraction Reveals a Hidden Novel Metal-Organic Framework for Electrocatalysis, Angew. Chem. Int. Ed. 2021,
DOI: 10.1002/anie.202016882
https://www.onlinelibrary.wiley.com/doi/abs/10.1002/anie.202016882