Supramoleclar Chemistry for Interface Functionalisation: From Surface-Templated Assembly of Molecular Frameworks to Epitaxially-Grown Designer Solids
Prof. Dr. Christof Wöll, Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
- 21 Jun 2013 11:00
Creating artificial materials with properties that may not be found in nature is a topic of pronounced scientific interest. We will describe a novel approach for the epitaxial growth of highly porous, crystalline “Designer Solids” employing concepts from supramolecular chemistry.
Metal-organic frameworks, MOFs, are highly regular, solid and crystalline, three-dimensional coordination polymers with nm-sized pores. By employing liquid-phase epitaxy, such supra-molecular frameworks can be grown from solution on modified solid substrates, yielding crystalline, oriented and homogenous layers referred to as SURMOFs. Not only have these MOFs very interesting properties themselves, the availability of large pores (diameters of up to 10 nm have been reported) additionally offers the possibility of loading the SURMOFs with metal NPs to create strictly periodic, metal or semiconductor NP 3d superlattices, also referred to as metacrystals.
We will discuss the physical and some of the chemical properties of these nanoporous metal/organic hybrid materials, describe the fabrication of surface-anchored MOFs on solid substrates using liquid-phase epitaxy (LPE) and discuss some of the strategies to load SURMOFs with nanoparticles.
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