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Updated: Apr 14, 2026
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Heterogeneity of functional groups in a metal-organic framework displays magic number ratios
Andrew C-H Sue1, Ranjan V Mannige2, Hexiang Deng3
1Department of Chemistry, University of California, Berkeley, and Lawrence Berkeley National Laboratory, Berkeley, CA 94720; Department of Chemistry, Northwestern University, Evanston, IL 60201;
Abstract:
Multiple organic functionalities can now be apportioned into nanoscale domains within a metal-coordinated framework, posing the following question: how do we control the resulting combination of "heterogeneity and order"? Here, we report the creation of a metal-organic framework, MOF-2000, whose two component types are incorporated in a 2:1 ratio, even when the ratio of component types in the starting solution is varied by an order of magnitude. Statistical mechanical modeling suggests that this robust 2:1 ratio has a nonequilibrium origin, resulting from kinetic trapping of component types during framework growth. Our simulations show how other "magic number" ratios of components can be obtained by modulating the topology of a framework and the noncovalent interactions between component types, a finding that may aid the rational design of functional multicomponent materials.
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