Controlled patterning of aligned self-assembled peptide nanotubes

Controlling the spatial organization of objects at the nanoscale is a key challenge in enabling their technological application 1 , 2 , 3 . Biomolecular assemblies are attractive nanostructures owing to their biocompatibility, straightforward chemical modifiability, inherent molecular recognition pr...

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Veröffentlicht in:Nature nanotechnology 2006-12, Vol.1 (3), p.195-200
Hauptverfasser: Gazit, Ehud, Reches, Meital
Format: Artikel
Sprache:eng
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Zusammenfassung:Controlling the spatial organization of objects at the nanoscale is a key challenge in enabling their technological application 1 , 2 , 3 . Biomolecular assemblies are attractive nanostructures owing to their biocompatibility, straightforward chemical modifiability, inherent molecular recognition properties and their availability for bottom-up fabrication 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 . Aromatic peptide nanotubes are self-assembled nanostructures with unique physical and chemical stability and remarkable mechanical rigidity 14 , 15 , 16 . Their application in the fabrication of metallic nanowires and in the improvement of the sensitivity of electrochemical biosensors have already been demonstrated 14 , 15 , 16 , 17 . Here we show the formation of a vertically aligned nanoforest by axial unidirectional growth of a dense array of these peptide tubes. We also achieved horizontal alignment of the tubes through noncovalent coating of the tubes with a ferrofluid and the application of an external magnetic field. Taken together, our results demonstrate the ability to form a two-dimensional dense array of nanotube assemblies with either vertical or horizontal patterns.
ISSN:1748-3387
1748-3395
DOI:10.1038/nnano.2006.139