Controlling Nanotube Formation in Amino Acid Amphiphiles – A Layer-by-LayerApproach
Nanotubes with a well-defined radius can be formed by self-assembly of amino acid amphiphiles (AAAs). Recent experiments have shown that such AAA nanotubes, which are naturally charged, can be used as templates to form an oppositely charged polyelectrolyte layer around them, which then can also be used as basis for forming multi-layered nanotubes by stepwise addition of respectively oppositely charged polyelectrolytes, i.e. by applying the method of layer-by-layer (LbL) deposition. Accordingly the structural details of AAA nanotubes modified by the addition of different polyelectrolytes and for an increasing number of deposition steps need to be studied in detail. Polyelectrolyte modification leads to hybrid nanotubes with adjustable properties rendering these systems much more versatile for employing them in future applications, e.g. in delivery systems or as smart materials, focussing on the use of biofriendly materials (e.g. polysaccharides as polyions). The LbL technique also enables incorporating a variety of materials such as clays, ceramics, biomolecules or nanoparticles.
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VOIGTLAENDER Kathrin; GRADZIELSKI Michael; GRILLO Isabelle; HOERMANN Anja and HOFFMANN Ingo. (2016). Controlling Nanotube Formation in Amino Acid Amphiphiles – A Layer-by-LayerApproach. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-463
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