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Investigation into MOF formation, post-synthetic modification (PSM) and post-synthetic exchange (PSE) via in situ liquid phase TEM analysis and high resolution TEM and STEM


EMSL Project ID
49098

Abstract

The kinetics and dynamics of metal–organic framework (MOF) formation and subsequent reactivity of the structural elements of MOFs have not been examined with nanoscale resolution. In situ TEM provides a unique method for detailed analysis of these processes that would include MOF formation, ligand exchange, metal exchange, and chemical reactions on nanocrystals. Expected outcomes include a detailed analysis of growth kinetics and crystal dynamics during and after reactions. Nucleation rates, growth rates, shape evolution, particle size distribution, particle morphology, and crystal structures can be evaluated in a single in situ liquid TEM growth experiment for a variety of MOFs. The rates and structural evolution of MOF PSM and PSE will be determined for a variety of structures. Insight into MOF formation, PSM and PSE will lead to a better understanding of their mechanism which will allow for improved theoretical models of these processes to be developed.

Project Details

Project type
Exploratory Research
Start Date
2015-10-15
End Date
2016-09-30
Status
Closed

Team

Principal Investigator

Nathan Gianneschi
Institution
University of California, San Diego

Team Members

Joseph Patterson
Institution
University of California, San Diego