Tube-like Nanostructures Research Articles

A novel process from cobalt nanowire toCo3O4 nanotube

Cobalt oxide (Co3O4) nanotubes were synthesized by calcining cobalt nanowires embedded in an anodic aluminatemplate (AAT) in air. The morphologies and phases of the nanowires/nanotubes werestudied by transmission electron microscope (TEM) and x-ray diffraction (XRD)respectively. A hypothesis of the tube formation process is presented andillustrated by experimental results. According to the experimental results, it isconcluded that competition between the oxidation and the evaporation of cobaltnanocrystals plays a crucial role in the formation of such tube-like nanostructures ofCo3O4.

Tube-like Nanostructures Composed of Networks of Complementary Hydrogen Bonds

In the present study we prepared amphiphilic supramolecular architectures that are dispersible in organic media by employing a hydrogen-bond-mediated aromatic sheet as the strongly interacting (solvophobic) unit and alkyl chains as the solvophilic unit. The general strategy described in this paper would be extended to the design and synthesis of a wide range of mesoscopic superstructures with specified internal organizations and surface characteristics. 12 refs., 3 figs.