Synthesis and Mechanical Properties of sub 5- µm PolyUiO-66 Thin Films on Gold Surfaces

Chemphyschem. 2021 Dec 3. doi: 10.1002/cphc.202100673. Online ahead of print.ABSTRACTMetal-organic framework (MOF) thin films currently lack the mechanical stability needed for electronic device applications. Polymer-based metal-organic frameworks (polyMOFs) have been suggested to provide mechanical advantages over MOFs, however, the mechanical properties of polyMOFs have not yet been characterized. In this work, we developed a method to synthesize continuous sub-5 µm polyUiO-66(Zr) films on Au substrates, which allowed us to undertake initial mechanical property investigations. Comparisons between polyUiO-66 and UiO-66 thin films determined polyUiO-66 thin films exhibit a lower modulus but similar hardness to UiO-66 thin films. The initial mechanical characterization indicates that further development is needed to leverage the mechanical property advantages of polyMOFs over MOFs. Additionally, the demonstration in this work of a continuous surface-supported polyUiO-66 thin film also enables utilization of the emerging class of polyMOF materials in sensors and devices applications.PMID:34861081 | DOI:10.1002/cphc.202100673

Source: Chemphyschem - December 3, 2021 Category: Chemistry Authors: Esther Frederick Leah Appelhans Frank DelRio Kevin T Strong Sean Smith Sara Dickens Erika Vreeland Source Type: research