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DOI	10.1073/pnas.2008880118
	Three-step nucleation of metal–organic framework nanocrystals
	Liu X.; Chee S.W.; Raj S.; Sawczyk M.; Král P.; Mirsaidov U.
发表日期	2021
ISSN	00278424
卷号	118 期号:10
英文摘要	Metal–organic frameworks (MOFs) are crystalline nanoporous materials with great potential for a wide range of industrial applications. Understanding the nucleation and early growth stages of these materials from a solution is critical for their design and synthesis. Despite their importance, the pathways through which MOFs nucleate are largely unknown. Using a combination of in situ liquid-phase and cryogenic transmission electron microscopy, we show that zeolitic imidazolate framework-8 MOF nanocrystals nucleate from precursor solution via three distinct steps: 1) liquid–liquid phase separation into solute-rich and solute-poor regions, followed by 2) direct condensation of the solute-rich region into an amorphous aggregate and 3) crystallization of the aggregate into a MOF. The three-step pathway for MOF nucleation shown here cannot be accounted for by conventional nucleation models and provides direct evidence for the nonclassical nucleation pathways in open-framework materials, suggesting that a solute-rich phase is a common precursor for crystallization from a solution. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Crystallization; In situ TEM; MOF; Nucleation
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180395
作者单位	Department of Physics, National University of Singapore, Singapore, 117551, Singapore; Centre for BioImaging Sciences, Department of BiologicalSciences, National University of Singapore, Singapore, 117557, Singapore; Centre for Advanced 2D Materials, Graphene Research Centre, NationalUniversity of Singapore, Singapore, 117546, Singapore; Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, United States; Department ofPhysics, University of Illinois at Chicago, Chicago, IL 60607, United States; Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60607, United States; Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
推荐引用方式 GB/T 7714	Liu X.,Chee S.W.,Raj S.,等. Three-step nucleation of metal–organic framework nanocrystals[J],2021,118(10).
APA	Liu X.,Chee S.W.,Raj S.,Sawczyk M.,Král P.,&Mirsaidov U..(2021).Three-step nucleation of metal–organic framework nanocrystals.Proceedings of the National Academy of Sciences of the United States of America,118(10).
MLA	Liu X.,et al."Three-step nucleation of metal–organic framework nanocrystals".Proceedings of the National Academy of Sciences of the United States of America 118.10(2021).