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Fabrication of surface-supported low-dimensional polyimide networks
Matthias Treier1, Neville V Richardson, Roman Fasel
1EMPA, Swiss Federal Laboratories for Materials Testing and Research, 3602 Thun, Switzerland.
Journal of the American Chemical Society
|October 2, 2008
Summary
Researchers thermally initiated imidization of adsorbed anhydrides and amines on Au(111) to create nanoscale polymeric networks and linear strands. This advances surface-supported organic nanostructure fabrication.
Area of Science:
- Surface science
- Materials chemistry
- Nanotechnology
Background:
- Growing interest in thermally and chemically stable surface-supported organic networks.
- Need for methods to covalently interlink adsorbed molecules into extended nanostructures.
Purpose of the Study:
- To demonstrate thermal initiation of imidization for creating surface-supported organic nanostructures.
- To investigate the formation of polymeric strands and networks using specific molecular precursors.
Main Methods:
- Low-temperature scanning tunneling microscopy (LT-STM).
- Controlled ultrahigh vacuum (UHV) conditions.
- Adsorption of amine-functionalized polyphenyls and PTCDA on Au(111).
Main Results:
- Successful thermal initiation of imidization for amines and anhydrides on Au(111).
- Formation of monolayer-thick linear polymeric strands.
- Fabrication of porous polymeric networks with nanoscale dimensions.
Conclusions:
- Thermal imidization is a viable route for creating covalently linked surface-supported organic nanostructures.
- The method allows for controlled synthesis of different nanostructure architectures (strands and networks).
- This work contributes to the development of advanced organic materials on surfaces.
