Coulombic dragging of molecular assemblies on nanotubes

We show by molecular dynamics simulations that polar molecules, ions and their assemblies could be Coulombically dragged on the surfaces of single-wall carbon and boron-nitride nanotubes by ionic solutions or individual ions moving inside the nanotubes [1,2]. We also briefly discuss highly selective ionic sieves based on graphene monolayers with nanopores [3]. These phenomena could be applied in molecular delivery, separation and desalination.\\[3pt] [1] Boyang Wang and Petr Kral, JACS 128, 15984 (2006). \\[0pt] [2] Boyang Wang and Petr Kral, Phys. Rev. Lett. 101, 046103 (2008). \\[0pt] [3] Kyaw Sint, Boyang Wang and Petr Kral, JACS, ASAP (2008).