"Petru Poni"
Institute of Macromolecular Chemistry

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Emerging 2D materials based on two-dimensional permethylated metal-organic networks
Project status: Ongoing
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Project code:  PN-III-P4-ID-PCE-2020-2000, Contract number: PCE 207/2021  

Acronym: 2D-PerMONSil

Project Description: After the discovery of graphene with the set of properties that essentially distinguish it from other allotropes of carbon, ultra-thin layered materials, classified as 2D nanomaterials, enjoy a growing interest due to their unique properties. In this context, very recently become of interest 2D MOFs. But in the crystallization process, 2D layers stack on the basis of intermolecular interactions, leading to higher dimensional materials. To manifest behavioral particularities specific to a 2D material, they must be isolated individually or in multilayers with thickness/surface aspect ratio as small, which is a challenge that seek solutions through different approaches (top-down or bottom-up). The project idea is to design and synthesize two-dimensional metal-organic networks with extremely weak intermolecular interactions, which facilitate delamination in nanosheets. The originality and the key to success in this approach is the use of ligands containing permethylated silicon units which by their natural exposure shield the structure and prevent the establishment of noticeable interactions. New ligands and combinations thereof will be prepared and used to coordinate various metal ions or clusters. Nanosheets formed will be evaluated as such, but also the effect of their incorporation in silicone matrices for the development of materials responsive to stimuli. Their common nature creates the premises for a better compatibility and forming advanced composites.

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