A molecular nanotube is a new kind of organic tubular molecule synthesized from cyclodextrin molecules of cyclic form. This nanotube has a constant inside diameter smaller than that of a carbon nanotube, and is soluble in several kinds of solvents such as water. In this study, we have observed by scanning tunneling microscopy a new kind of supramolecules formed by the molecular nanotubes and starpolymers with three branches. We found that the molecular nanotube includes a linear polymer chain chemically fixed to highly oriented pyrolytic graphite. Furthermore, we show that a dendritic structure is formed by molecular nanotubes and starpolymers on the substrate.
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